근로시간면제제도와 관련된 몇가지 쟁점

박도하(Park, Do-Hah) 조선대학교 법학연구원 2013 法學論叢 Vol.20 No.3

우리나라에 있어서 노조전임자에 대한 급여금지제도는 1997년 3월 13일 법률 제5310호인 노동조합 및 노동관계조정법에 도입된 이래 약 13년간 그 제도의 시행이 미루어지다가 2010년 1월 1일 법률 제9930호에 의하여 2010. 7. 1.부터 사실상 시행되었다. 노조전임자에 대한 급여지급관련제도는 법률 제9930호에 있어서는 당초의 제도모습과는 사뭇 다른 내용으로 정해지게 되었다. 즉 기업별 노조와 중소규모의 노동조합이 대부분인 우리나라에 있어서 노조전임자제도는 애초의 논의와는 다른 형태인 부분적인 근로시간면제의 형태인 근로시간면제제도로 확정되었으며, 입법구조상의 문제점 등으로 인하여 그 시행에 있어서 출발점부터 많은 문제점을 안고 있는 것도 사실이다. 이러한 애초의 문제점에도 불구하고 시행 이후 대부분의 사업장에서 근로시간면제제도의 한도 내에서 적법하게 도입을 하고 있어 도입 초기에는 원활한 모습이다. 그러나 아직도 면제시간 외에 전임자의 인원수를 제한하고 있는 문제, 근로시간면제한도를 위반한 경우의 사법적(私法的)효력 문제, 복수노동조합에 있어서의 노조전임자의 배정문제, 기존에 존재하던 유급노조활동 등의 처리문제 등 문제점이 많은 것도 사실이다. 이러한 문제점을 해결하기 위해서 고용노동부는 행정지침인 근로시간면제한도 매뉴얼을 개정하는 등 그 개선에 노력을 하고 있는 것도 사실이다. 이에 본 논문에서는 근로시간면제제도에 관한 그간의 입법화 과정, 외국의 입법례, 근로시간면제한도제도의 실상, 문제점 가운데 특히 근로시간면제제도 이용 주체와 관련된 타임오프 개념 정리, 인원제한의 문제, 한도초과의 단체협약의 효력 문제, 상급단체 파견전임자의 문제 등을 살피고자 한다. The pay-off Prohibition System about Full-Time official of Trade Union in our country, which was introduced A Labor Union and Labor Relation Act 5310("hereinafter referred as TULRA") on March 13, 1997 but postponed to enforce the Act for 13 years, has enforced actually since July 1st 2010 by Act 9330 on Jan 1st 2010. The pay-off prohibition system about Full-time official of Trade Union has had a different content from the original system image on Act 9930. That is, Full-time official of Trade Union system, since we almost have Trade Union of Enterprise and A Labor Union of small Enterprise, has definited time-off system which is assume the time-off hours Form. And it has a lot of issues from the starting point of the enforcement because of problems of the legislation system. Despite of such outset issue, Most of places of business show a harmonious from after it was introduced early on within time-off system legalty. But there are a lot of problems including the problem with limiting Full time official number as well as time-off problem, judicial effect problem of a violation of time off restriction, an apportionable problem of full time official on compound Trade Union, The handling problem of the existing paid Trade Union activity. To solve these problems, The Ministry of Labor Employment tries to improve something such as Maximum Time-off Hours Manuel about administrative guidelines. Therefore, This paper is inspected the meanwhile legislative course about the time-off Hours system, foreign legislation case, the real state of affairs in The Maximum time-off Hours system, especially The related Time-off notion reason of the Time-off system using core, The problem of limiting personnel, The effect problem of an organization agreement of The limiting excess, The problem of a dispatch predecessor of upper group.

Adjoint기법 기반의 Handover 분석을 통한 오차 요소 Trade-Off 연구

권혁훈,신효섭,박봉균,최한림 한국항공우주학회 2015 한국항공우주학회 학술발표회 논문집 Vol.2015 No.11

장거리 전술급 유도탄의 경우, 중기 유도 단계에서 종말 유도 단계로 전환되기 전에 탐색기로 표적을 탐지하고 고착해야 한다. 따라서, 성공적인 유도 단계 전환을 위해서는 유도탄과 표적의 위치 및 자세에 영향을 미치는 오차 요소들에 대한 Trade-Off 연구가 선행되어야 한다. 본 논문에서는 장거리 전술급 유도탄에서 발생 가능한 오차 요소들을 분석하고, 주요 오차 요소들에 대한 Trade-Off 연구를 수행하였다. 상태 변수 기반의 Adjoint 기법을 기반으로 주요 오차 요소들의 관계를 수식으로 유도하고, 대표적인 IMU 모델들에 대한 시뮬레이션을 수행하였다. 4차 다항식 유도 기반의 중기 유도 궤적을 기반으로 Handover 분석을 수행하고, 몬테카를로 시뮬레이션과 Adjoint 시뮬레이션의 결과를 비교하였다. For long-range tactical missiles, the transition from mid-course guidance phase to homing guidance phase is not possible until the seeker detects and locks onto the target. Therefore, the trade-off study between error sources deeply related to the position and attitude of missile and target should be carried out for successful handover. This paper presents the analyse of the dominant error sources and the trade-off study between those. Adjoint method on state-space is used for the formulation, and the trade-off study for typical IMU models is investigated through numerical simulations. 4<SUP>th</SUP> polynomial guidance is applied for the mid-course guidance, and the linear results of the proposed adjoint simulation are compared with the nonlinear results of monte-carlo simulation for the verification.

근로시간면제제도의 평가와 실천적 과제

하갑래 한국경영법률학회 2010 經營法律 Vol.20 No.4

The Time-off System, which was newly stipulated in the Trade Union and Labor Relations Adjustment Act on January 1st 2010 , is to be implemented from July 1st, 2010. Accordingly, the Enforcement Decree of the Act was amended on February 12th. The decision of the Time-off System Deliberation Committee on the maximum Time-off hours was notified by the Labor Minister on April 20th and administrative guidelines were announced by the Ministry of Labor on June 4th. This paper recognized and analyzed components of the system in ordinances, notification and guidelines which were prepared to implement the Time-off system, identified their short-comings and suggested ways to develop the system. The Trade Unions and Labor Relations Act stipulates the contents of a complicated Time-off system in a single paragraph under a single Article, suggesting a substantially abstract ideas on the system. This resulted in adding new contents to the Enforcement decree and administrative guidelines at a time when there was no ground for mandating the system and many restrictions to the system. The circumstance may lead to the possible infringement on the principle of autonomy in Labor and Management and engender differing views on the effect of stipulated measures. This paper has analysed such problems in details and suggested alternatives. It might be too early to discuss the amendment of relevant institutions since the Time-off system has only been ready to be implemented. In addition, few court cases or evaluations by academia have been accumulated. Therefore, this paper is expected to contribute to building upon the Time-off system based on common consensus through numerous discussions by raising questions to draw practical discussions on the system.

A Study of the Psychological Mechanism in the Sustainable Product Purchase : Focusing on the Trade-Offs with Sustainability

Yoo, Je Eun 한국마케팅관리학회 2023 한국마케팅관리학회 학술대회 Vol.2023 No.04

As the world continues to grapple with pandemics like COVID-19, consumers are increasingly displaying a proactive attitude towards sustainability, thereby escalating the market demand for companies to adopt sustainable practices. Furthermore, since the environmental, social, and governance( ESG) frameworks are regarded as a yardstick to evaluate companies nowadays, keeping sustainability via CSR no longer exerts as a competitive advantage for the firms. Instead, by adapting the sustainability as a product attribute which directly able to convince consume rfor ESG execution, companies can explicitly demonstrate their commitment to sustainabiilty. Despite consumers’ increasing willpower for the sustainabiliyt, the attitude does not directly links to the actual purchase of sustainable products.S ustainability in fact construed as part of a moral concept that pursuing the common good whichin fact incur trade-off between individual benefits to universal well-being. Therefore, Although consumers generally hold a positive view of sustainability, this sentiment may notn ecessarily be reflected in their purchasing behavior, thus creating a “sustainability attitude-behavior gap” phenomenon in the market. Our research suggest that one of the reason for the sustainbaility attitude-behavior gap is due to the amount of the consumer’s willingness to trade-off the sustainability to other product attribute, which can vary based on the context and type osf ustainability. Additionally, we examine how the level of sustainability incorporation affects purchase intention in different product categories. In our research, we define ‘sustainability trade-off’ as ap sychological behavior in which consumers decide on the weight ratio between the sustainability attribute and other product attributes, when total weight of all product attributes is equal. We then investigated on ‘which sustainability type and attribute to trade off’ and ‘how much’c onsumers would trade-off the sustainability within the product by examining sustainability trade off with 1) types of sustainability( environmental/social) 2) types of product attribute (utilitarain/hedonic). We would also posit the psychological mechanism underneath the usstainability tradeoff process will be the moral-regulation of the consumer. Prio rstudies have argued on the antecedents of sustainable decision mostly on individual’s morality , however, we suggest the moral regulation which consumer’s moral consistency and compensation differ individually. Therefore, consumers’ decisions to purchase sustainable products are influenced by the degree to which their previous actions align with their moral standards, rather than an absolute ethical standard. This study contributes to narrowing the sustainability attuitde-behavior gap by refining and segmenting consumers’ attitude on sustainability especially focusing on how consumers ‘trade-off’ the sustainability with other benefits they get from the products. By doing so, firms can better address the issue of the sustainability attitude-behavior gap by setting up an intuitive and precise marketing strategy with sustainable product

한국 경력 단절 여성의 무역 인력 전환을 위한 프로그램 연구

배경원,김영욱 한국취업진로학회 2014 취업진로연구 Vol.4 No.2

최근 국내의 경력 단절 여성의 수는 900만 명을 넘어서고 있다. ‘고용노동부’와 ‘여성가족부’ 등의 정부 부처에서 오래전부터 그들의 취업과 창업의 활성화를 위한 교육과 사후관리 프로그램들을 운영 중이지만 정부 부처 프로그램들의 전형적 문제인 접근성과 홍보의 부재로 인해 프로그램의 존재 여부를 모르는 경력 단절 여성이 대다수인 상황과 부족한 교육 프로그램의 전문성, 실무 능력 배양의 문제, 취업 알선 외 사후관리의 부재, 정부 지원 프로그램의 허점 등으로 처음의 취지와는 대조적으로 교육을 접하지 못한 경력 단절 여성 뿐 아니라 교육을 받은 경력 단절 여성까지 새로운 일자리의 기회를 온전히 제공 받지 못하는 상황이다. 또한 국내의 경력 단절 여성들의 교육 및 취업을 위해 ‘여성 가족부’와 ‘여성인력개발센터’ 등 다양한 기관에서 프로그램들을 운영 중이지만 이 또한 접근성과 다양한 여건, 학력간 차이 등의 이유로 프로그램을 제대로 접해보지 못하거나 취업으로 이어지지 않는 등의 문제점이 나타나고 있다. 본 연구의 주제는 경력 단절 여성에 초점이 맞추어져 있다. 연구의 주제에 맞추어 여성의 경력이 단절되는 시점 및 인구학적 분포와 영향요인을 통계청 및 한국 여성 정책 연구원, 여성가족부의 보고서와 통계를 종합 분석하여 파악할 것이다. 또한 경력 단절 여성을 위한 프로 그램들을 분석하고 그 프로그램들이 무엇인 지를 진단하는데 목적을 두고있다. 따라서 이 연구의 가장 큰 주제이자 핵심인 경력 단절 여성을 어떻게 무역인력으로 전환할 것인 지에 대한 다양한 방안을 제시하고자 한다. 본 연구는 우선 최근 국내의 경력 단절 여성의 실태를 파악하고 그 들의 취업과 창업을 위한 정부 및 민간단체의 교육 프로그램과 프로그램들의 문제점을 분석하였다. 이런 문제점들을 파악하여 정부 및 민간단체의 프로그램의 단점을 보완하고 경력 단절 여성이 이론적인 교육 후에도 수출의 활로를 원하지만 전문가의 부재 등으로 기회를 찾지 못한 중소기업과의 연계를 통한 직접적인 제품의 수출 및 수입으로 실무 경험의 배양과 해당 업체와의 직접적인 취업으로의 연계 같은 확실한 사후 지원 관리 방법을 모색하고 제시 하여 경력 단절 여성의 좀 더 다양하고 확실한 교육 프로그램과 원활한 취업 및 창업을 할 수 있도록 다양한 방안을 제시하는데 그 취지를 두고 있다. The current employment outlook remains dire for many well-education young people who are even searching jobs overseas as an alternative to domestic employment. The Korean government is preparing practical alternatives for these young people as a means of combatting this crisis; however, research and existing opportunities for unemployed and laid-off women are minimal in comparison. The programs operated by the “Ministry of Gender Equality & Family” and “Women Resources Development Center” for unemployed and laid-off women face difficulties in vocational training due to differences in academic ability, personal working hours, family dependents, and other social issues. The number of unemployed and laid-off women in Korea exceeds nine million. Although the “Ministry of Employment & Labor” and “Ministry of Gender Equality & Family” are fervently addressing these concerns, specifically employment and assistance in starting a business, problems arise as qualified female candidates are unable to receive gainful employment primarily caused by a lack of accessibility to jobs and ineffective publicity on the programs that simply does not reach prospective women. Under these current circumstances, Korea has been creating Economic Integration “F.T.A” contracts with many countries creating the largest FTA territory in ASIA. In order to effectively accomplish trade, large and small-medium sized companies need global trading experts and well- educated bi-lingual women have been entering these jobs. Furthermore, the importance of practical trade education is more important than ever before. Alternative expressions è have been entering these jobs OR are needed for these jobs OR may enter these jobs. This has created the perfect opportunity for unemployed and laid-off women, who after receiving an education in practical international trading may pass various trading qualification examinations. Some candidates may have studied foreign languages or have the ability to work in a company but because of a lack of knowledge in global trading previously were not qualified. The result will be a “ Creative Economy” that merges this group of women with global trading. Global trading education for unemployed and laid-off women can supply needed employees for small-medium sized companies who want to expand their markets through trade. This model may be easily extracted a viable business model platform expandable into other sections and regions. In summary, the purpose of this study is to focus on unemployed and laid-women analyzing the time at which women discontinue in their employment and the associated distribution factors. We will also verify existing statistical data from Korean women related public institutions. In addition, we plan to diagnose and create an effective education and training method that will enable this particular demographic to enter the workforce as global trading experts both in Korea and overseas.

An Alternative to the Autonomy-Security Trade-off Model: The Case of the ROK-U.S. Alliance

( Min Hyoung Park ),( Kwang Ho Chun ) 한국국방연구원 2015 The Korean Journal of Defense Analysis Vol.27 No.1

Most of the alliances that were formed during the Cold War period were known as a so-called “asymmetric alliance,” which means strong states provide one-sided support for the partner in a relationship at the expense of the weaker power’s autonomy. In an asymmetric alliance, a weak state gets full security support from the superpower, but in return, the weak state loses its autonomy. In this case, there is a trade-off between security and autonomy of the weaker state. This is what the Autonomy-Security Trade-off Model suggests. However, after the end of the Cold War, the weak powers, especially the developing country, have tried to increase its autonomy without any loss of its security-unlike what the Autonomy-Security Trade-Off Model argues. In this case, there may not be necessarily a trade-off between autonomy and security if a weak state decides to increase both autonomy and security simultaneously. The weak state does not usually want to lose its security, therefore it tries to find a strategy that can increase its autonomy without decreasing its security. In this sense, this paper argues that the Autonomy-Security Trade-off model has limitations to explain the above kind of national action after the Cold War. In line with this, the goal of this paper is to offer an alternative model to explain an asymmetric alliance relationship by looking at the case of the ROK-U.S. alliance at the turn of the twenty-first century.

휘발유 가격변화와 가계소비의 상충작용

김숙향,황덕순 대한가정학회 2002 Human Ecology Research(HER) Vol.40 No.8

This study aims to reveal the influence of price increase in gasoline on household expenditure trade-off. The subjects were 651 households, acquired the first quarter of 1996 and 1997. This study shows the change of the auto fuel budget share in the same household and they were analyzed with the paired t-test, independent t-test. The results are as follows; 1) the price increase of auto gasoline resulted in the increase of its budget share, regardless of a household's true increase or decrease of income. 2) according to price increase in gasoline, the auto fuel budget share has been changed, therefore I divided these changes into three group on the base of it's degree of change. 3) In the group that had a decrease in auto fuel budget share compared to the degree of change, there was a trade-off between the increase in food and light & light water and the decrease of education and auto fuel budget share. Auto fuel in this group was used as a discretionary good. 4) In the group that had a similar change in auto fuel budget share compared to the degree of change, there were no trade-off between expenditure items except auto fuel budget share and miscellaneous decrease. This group is the highest income group among the three groups. 5) In the group that had an increase of change in auto fuel budget share compared to the degree of change, there was a trade-off between the increase of eating-out and auto fuel, and the decrease of education and miscellaneous budget share. Auto fuel in this group was used as a discretionary good. 6) trade-off of expenditure budget share showed a mixed effect between the influence of increase in gasoline price and influence of increase in true income.

OECD국가의 아동 및 노인복지 지출규모의 상쇄현상 추세와 아동빈곤율과의 관계

신현중(Hyeon-Joong Shin) 한국정책분석평가학회 2008 政策分析評價學會報 Vol.18 No.2

  Literature on the child welfare shows us that a child poverty is more serious than other age groups, especially the elderly. This research explores whether or not this phenomenon attributes to the trade-offs between expenditures on child and those on the elderly. For the purpose, the study pursues several analyses. Firstly, the research examines whether the degree of the trade-offs is classified with a certain category. Secondly, the study analyses the impact of the trade-offs on child poverty rate. The research finds that there exists the trade-offs between two sections of expenditures in 16 OECD countries. But a certain classification cannot be founded. In addition, the rsults of the study shows that economic growth rate influences the trade-offs, but that demographic factors and political ideology do not. More importantly, there is little causal relations between the trade-offs and the child poverty rate. In conclusion, the child poverty is impacted by the size of expenditures on the child, not by that of the trade-offs.

환경·경제 통합분석을 위한 환경가치 종합연구 부문별 영향평가 및 가치추정

김현노,안소은,김충기,서양원,정다운,박윤선,한선영,이홍림 한국환경정책평가연구원 2020 사업보고서 Vol.2020 No.-

Ⅰ. 생태계서비스 서식처질 가치추정 1. 연구개요 ❏ 연구목적 ㅇ 환경경제 통합분석 절차를 활용하여 생태계 서식처질 변화에 대한 경제적 가치 및 편익을 추정함으로써 통합분석 절차의 활용성을 제고하고자 함 ㅇ 김현노 외(2019)의 생태계서비스 서식처질에 대한 물리적 영향평가 결과를 바탕으로 경제적 가치를 추정함 ❏ 연구내용 ㅇ 야생생물 서식에 적절한 상태를 제공하는지를 나타내는 서식처질은 생태계서비스항목 중 지지서비스에 해당 ㅇ 김현노 외(2019)에서 기평가한, 제주도 토지피복 변화에 따른 서식처질 평가 결과사용 ㅇ 제주도 생태관광 설문조사(2019)를 바탕으로 제주도 생태관광지에 대한 국민의 인식 및 선호를 파악하고, 선택실험법(CE: Choice Experiment)을 적용하여 12개 관광지의 서식처질 변화에 대한 경제적 가치를 추정함 2. 선행연구 검토 ❏ 선택실험법을 적용한 생물다양성 경제적 가치 추정 선행연구 검토 ㅇ 대부분 생태관광의 주요 속성으로 생물다양성을 포함함. 생태관광 주요 속성들의 경제적 가치를 평가했던 선행연구에서 사용한 선택실험법의 속성들을 정리하면 다음과 같음 - Chaminuka et al.(2012): 마을 숙박(village accommodation), 마을 투어(village tours), 공예시장 방문(visits to crafts market) - Juutinen et al.(2011): 생물다양성, 방문자 수, 휴게공간, 안내표지판, 입장료 - Naidoo and Adamowicz(2005): 여행시간, 입장료, 관광형태, 숙박시설, 조경특성(landscape features), 발견되는 새의 종 수(number of bird species), 큰 짐승을 볼 수 있는 가능성(Likelihood of seeing large game animals) 3. 설문조사 ❏ 설문개요 ㅇ 제주도 생태관광지에 대한 일반 국민의 인식 및 선호를 파악할 목적으로, 최근 5년내 제주도 주요 생태관광지 12개 중 일부를 방문한 성인 3,000명을 대상으로 온라인조사를 실시함(2019년 10월 21~25일) ❏ 선택실험 설계 ㅇ 선택실험법은 분석 대상의 속성 변화에 대한 지불의사액을 추정하는 방법임 ㅇ 제주도 12개 관광지에 대한 설문의 주요 속성으로 관광지 내 편의시설(0~100점), 안내/해설 서비스(5점 척도), 서식처질(0~1), 1인당 입장료를 포함함 ㅇ 응답자의 선호 관광지 선택 및 관련 경험에 대한 평가를 바탕으로 설문지의 선택항목이 제시됨 4. 실증분석 ❏ 분석모형 ㅇ 본 연구에서는 기본적인 조건부로짓모형(CL: Conditional Logit)뿐만 아니라 응답자의 선호의 이질성을 반영할 수 있도록 Random Parameter Logit Model(RPL) 모형을 함께 추정함 ❏ 분석 결과 ㅇ CL, RPL 및 RPL+EC 모형은 NLOGIT 6.0 소프트웨어를 사용하였고, CL 모형의 계수들은 최우추정법(maximum likelihood estimation), RPL과 RPL+EC 모형의 계수들은 시뮬레이션 최우추정법(simulated maximum likelihood estimation)을 통해 추정하였음 ㅇ 모든 변수는 예상 부호와 일치하고 통계적으로 유의하게 추정됨. 관광지 내 편의시설, 안내/해설 서비스, 서식처질이 좋은 관광지일수록 선택확률이 높았고, 입장료가 높을수록 해당 대안을 선택하지 않는 것으로 나타남 ㅇ 추정한 세 모형의 AIC, BIC 및 Pseudo R2를 살펴본 결과 RPL 모형이 더 선호되며, RPL 모형과 RPL+EC 모형의 우도비율검정(LR test: Likelihood-ratio test)을 실시한 결과 RPL+EC 모형이 더 적합한 것으로 확인됨. 따라서 서식처질 변화에 대한편익 추정에는 RPL+EC 모형의 추정 결과를 사용함 ❏ 편익추정 ㅇ 10년간(2009~2019년) 서식처질 수준 변화는 관광지별로 상이하나 평균 0.19 증가하였음 - 서식지질이 높은 산림 면적이 약 100km² 증가하였고, 서식지질이 낮은 농경지면적이 약 150km² 감소하여 전체적인 서식처질이 증가한 것으로 나타남 ㅇ 서식처질 변화에 따른 보상잉여(CV) 추정 결과, 서식처질 수준 변화가 없었던 서귀포자연휴양림의 경우를 제외하고 관광객 1인당 253원(절물자연휴양림)에서 2,302원(비자림)의 편익이 있는 것으로 도출됨 ㅇ 2019년 관광지별 입장객 수를 고려할 때, 서식처질 변화에 따른 사회적 편익은 1.8억원/년(절물자연휴양림)에서 23.7억 원/년(중문대포해안주상절리대)이며, 12개 관광지의 서식처질 개선에 따른 편익은 연간 약 120억 원/년으로 추정됨 5. 시사점 ❏ 토지이용·개발을 요하는 정책·사업에 생물다양성과 그 편익을 고려할 수 있도록 본 연구 결과를 의사결정 참고자료로 활용할 수 있음 Ⅱ. 생태계서비스 종합평가 1. 연구 배경 및 목적 ❏ 연구배경 ㅇ 국토 이용효율성 위주의 토지이용정책은 생태계서비스 간의 불균형을 초래하였고, 따라서 밀레니엄 생태계 평가(MA)는 생태계서비스 항목 간에 존재하는 상호작용인 트레이드오프와 시너지 식별이 중요하다고 언급함(MA, 2010) ㅇ 생태계서비스 간 상호작용은 단일의 구동력에 의해 다수의 서비스가 변화하거나, 다른 서비스 변화에 상응하여 변화하는 서비스가 존재할 때 발생함(Bennett et al. 2009) - 생태계서비스 간 상호작용은 공간이나 시간에 걸쳐 반복해서 함께 나타나는 생태계서비스 세트인 ‘번들’을 통해 확인할 수 있음(Raudsepp-Hearne, Peterson, and Bennett, 2010, p.5242) ❏ 연구목적 ㅇ 생태계서비스 평가를 활용한 환경관리를 위해서는 생태계서비스 간의 관계를 파악하는 일이 매우 중요함 ㅇ 다양한 통계기법을 적용하여 다중 생태계서비스 간의 관계를 파악하고자 함 - 생태계서비스 분석에는 InVEST(Integrated Valuation of Environmental Services and Tradeoffs) Model을 활용함 - 1989~2009년 사이 토지 피복·이용(Land Use Land Cover, LULC) 변화를 5가지 생태계서비스로 평가하고, 주성분분석과 군집분석을 통해 생태계서비스 상호작용 변화가 일어난 지역을 확인함 - 추가적으로 제주도지역을 대상으로 몇 가지 생태계서비스 항목에 대한 시계열적변화를 추정함 2. 생태계서비스 통합분석 평가방법 ❏ 생태계서비스 평가 및 검증 ㅇ 본 연구에서는 Natural Capital Project에서 개발한 생태계서비스 기반의 의사결정지원 모델인 InVEST를 사용하여 다수의 생태계서비스 항목을 평가 및 검증하고 그 결과를 토대로 통합평가를 수행함 ❏ 생태계서비스 통합평가: heatmap ㅇ 생태계서비스 결과마다 단위 및 수치의 범위가 상이하여 비교가 어려운 문제를 해결하기 위해 heatmap을 제시하여 시각적 비교가 가능하도록 하였음 ❏ 생태계서비스 트레이드오프 관계분석 ㅇ 지역적, 생태계 유형별, 권역별 생태계서비스 제공 경향을 한눈에 알아보기 위해 지역별 생태계서비스 번들을 도출하였고, 주성분분석으로 많은 수량 공급, 수질정화(질소 저류, 인 저류), 탄소 저장, 서식처질 사이의 상관관계를 효율적으로 표현함 ㅇ 주성분분석 후 K-means clustering을 통해 동질적인 생태계서비스 제공 경향을 보이는 지역의 결과를 군집으로 표현함 3. 생태계서비스 현황평가 ❏ 현황평가 ㅇ 2009년 토지피복도 기반으로 평가한 우리나라 전역의 생태계서비스는 다음과 같음 - 수량공급서비스의 경우 한강 및 낙동강 대권역에서 각각 약 260억m³, 200억m³로 가장 많이 기여하고 있으며, 수질조절서비스 역시 한강 및 낙동강 대권역에서 질소 연간 30톤, 인 연간 2톤 정도를 저류하고 있음. 수자원 생태계서비스의 경우 한강 및 낙동강 대권역이 주요 공급원임을 확인함 - 기후조절 역할을 하는 탄소저장서비스와, 생태계 동식물의 서식 기반과 관련된 서식처질 서비스의 경우 산림, 초지, 습지의 기여도가 높은 서비스임. 따라서 산림이 풍부한 강원도나 경북, 경남 지역을 포함하는 한강 및 낙동강 대권역에서 해당 서비스가 우세한 양상을 보임 ❏ 생태계서비스 트레이드오프 관계분석 ㅇ 생태계서비스 제공량에 대한 주성분분석 및 K-means 군집분석을 통해 17개의 국내광역지자체는 4개의 번들로 그룹화됨 ㅇ 4개의 번들은 1. 도시형, 2. 농업형, 3. 산림형, 4. 도서형으로 구분되며, 다음과 같은 특징을 지님 - 도시형 번들: 서울, 인천, 부산, 대구가 포함됨. 인간의 활동으로 배출되는 부산물의 영향으로 인 부하량이 많아 이를 저류하는 양이 많음 - 농업형 번들: 경기, 세종, 전북, 전남, 충남, 광주가 포함. 농업활동 시 질소와 인을 비료로 활용하므로 질소 및 인 저류량이 높음 - 산림형 번들: 대전, 울산, 충북, 경북, 경남이 포함됨. 서식처질과 탄소저장능력이 다른 서비스에 비해 높으며, 조절서비스와 지지서비스의 시너지 효과가 나타남 - 도서형 번들: 제주도가 해당됨. 기후와 토양이 내륙과 다르며, 아열대 습윤 기후대에 속하고 수량공급서비스가 풍부함 4. 토지 피복·이용 변화에 따른 생태계서비스 변화분석 ❏ 토지 피복·이용 변화에 따른 생태계서비스 변화 통합평가 ㅇ 1989년과 2009년 사이 거의 모든 지역에서 시가화지역이 늘고 산림이 감소했으며, 농경지의 경우 대도시 지역에서는 감소하고 그 외 지역에서는 증가하는 경향을 보임 ㅇ 서울, 부산, 대구, 인천 등 대부분 지역에서 단위면적당 서비스 제공 총량이 감소함 - 생태계서비스의 큰 역할을 담당하는 산림 면적 감소 영향이 크게 나타남 ❏ 토지 피복·이용 변화에 따른 생태계서비스 트레이드오프 관계 변화 ㅇ 생태계서비스 트레이드오프 및 시너지 관계는 주성분분석 결과로, 서비스 간의 관계는 벡터 간 각도를 통해 확인 가능함 ㅇ 우리나라의 경우 서식처질 및 탄소저장서비스와 인조절서비스 간의 트레이드오프관계가 발생하는 것으로 확인됨 ㅇ 트레이드오프 및 시너지 효과가 두드러지게 나타나는 지역은 제주, 경기, 광주로 나타남 - 제주: 수질조절서비스가 상승할 때 산림제공서비스인 서식처질, 탄소저장서비스가 감소함 - 경기, 광주: 수질조절서비스와 산림제공서비스인 서식처질, 탄소저장서비스가 동시에 하락함 5. 시사점 ❏ 생태계서비스 번들 작성 및 서비스 연계 특성을 확인하는 과정에서, 국토계획 의사결정 시 각 생태계서비스의 장단점과 서비스 간 트레이드오프, 시너지 효과를 고려하는 통찰력을 제공할 수 있으리라 기대함 Ⅲ. 생태계-환경유해인자 건강영향 연계 ❏ 본 연구의 2단계 사업(2019~2021년)에서는 화학물질이 생태계를 거쳐 식이 노출의 경로로 인간에게 미치는 영향을 파악하는 화학물질의 피해추정 틀을 구축하고자 함 ㅇ 2단계 1차 연도(2019년)에는 유해인자-생태계(수용체)-건강영향의 첫 연계경로인‘화학물질이 생태계에 미치는 영향’을 평가한 문헌을 통해 환경유해인자에 대한 생태위해성평가 및 피해비용 추정의 기초조사를 수행함 ㅇ 2단계 2차 연도(2020년)에는 주요 환경유해인자로 인한 생태위해성평가 및 피해비용추정의 국내 활용사례를 조사하여, ‘환경유해인자-생태계 영향-가치추정’ 경로에 기반한 생태계위해성과 가치추정 연계 가능성을 모색하고자 함 1. 연구개요 ❏ 2016년 미국 환경보호청(US EPA)은 기존의 생태위해성평가 끝점(endpoint)에 ‘생태위해성평가에 도입이 가능한 생태계서비스 끝점’을 추가한 새로운 위해성평가 형태를 제시함(ES-GEAEs: Ecosystem Services Ggeneric Ecological Assessment Endpoints) ㅇ 이는 생태계가 인간에게 베푸는 경제적, 사회심리적, 그리고 보건적 혜택과 같은 인간의 관점에서 정량적 편익분석 및 가치평가를 가능하게 함 - 그중 AQUATOX 모델은 오염물질로 인한 수생태계 영향을 통합적으로 평가하는 것이 가능하고, 개체 수준의 독성 자료를 다종(multi-species) 또는 생태계 반응과 연계할 수 있는 장점을 가지고 있어 활용도가 높을 것으로 기대됨 - 본 연구에서는 AQUATOX 모델을 통한 ‘화학물질 유입-생태계서비스 변화-가치평가’ 연계가 가능한지 모델의 활용성을 검토하고자 하며, 이를 위해 AQUATOX모델로 생태위해성평가를 수행한 연구사례들을 살펴봄 2. 사례분석 ❏ AQUATOX 모델 ㅇ AQUATOX는 수생태계에서 영양염과 퇴적물 및 독성 화학물질 등과 같은 일반적인 오염물질의 복합적인 환경적 거동과 영향을 평가하는 생태위해성평가 모델임 - 간단한 모델부터 복잡한 수생태 먹이망(food web)의 섭식 단계를 고려한 모델까지 구현이 가능함 ㅇ AQUATOX 주요 입력자료 및 결과 - 입력자료: 종별 생물량 밀도, 수질 정보, 수리학적 정보 및 환경변화(화학물질 노출, 부영양화 등)에 대한 입력 - 결과: 종별 생물량 밀도 변화, 화학물질의 농도 변화 및 수질 변화 등 ❏ AQUATOX 모델을 활용하여 생태영향을 평가한 국내 사례연구 ㅇ 이한필(2012): 국내 최초로 AQUATOX 모델을 활용하여 수생태위해성 예측 및 장기 생태영향평가를 수행한 연구 - 팔당호 생태 변화를 모의하여 계절적 특성과 섭식영향 단계에 따른 생물량(biomass)변화를 분석하고, 농약(제초제) 및 가축사료 첨가제의 유입 시나리오를 설정하여 생태영향을 생물량으로 모의함 ㅇ 염재훈, 김상돈(2019): 톨루엔 하천 유출 시나리오의 생태영향평가 수행 - 국내 종에 대해 평가했다는 차별성이 존재함 - 생물량 정보를 밀도로 전환하는 방식을 사용함 ㅇ 국립환경과학원(2018): 국내 대하천 본류 수생태계 생태모델링 개념을 정립하여 AQUATOX를 분석모델로 선정하고, 이를 적절한 구간에 시범적용하여 우리나라 여건에 맞는 수생태계 변화 예측 기반을 구현하는 연구를 수행 - 먹이망 기반 모델과 종다양성 모델을 병행하여 사용할 경우 AQUATOX는 생태계를 재현·예측하고 해석하는 좋은 도구가 될 수 있음을 제시함 ❏ AQUATOX 모델을 활용하여 생태영향을 평가한 국외 사례연구 ㅇ Galic et al.(2019): AQUATOX 모델을 이용하여 “화학물질 노출-생태계서비스변화-가치 평가”를 연계한 대표적 사례연구 - AQUATOX를 통해 “Abundance of game fish(Biomass)”와 “Water clarity(Secchi depths)” 결과(추정)값을 얻은 후 이에 대한 가치 평가를 수행함 3. 연구방법론 적용방안 검토 ❏ AQUATOX 모델로 생태영향을 평가한 선행연구 검토결과, 생물량 변화에 대한 결과도출이 가능함을 확인함 ❏ 국내에서도 Galic et al.(2019)의 생태위해성평가 결과와 같이, 가치추정을 어떻게연계할 것인지를 검토할 필요가 있음 ❏ 연계방안 제안 ㅇ 화학사고 또는 환경오염에 대한 가상 시나리오 선정 및 설문을 통하여 “생물량”에 대한 가치를 정량화하는 방안이 있음 ㅇ AQUATOX 모델의 결과물을 지표로 연계하고, 해당 지표에 대한 경제적 가치를 파악하는 지표연계방식을 고려해 볼 수 있음 Ⅳ. 환경유해인자로 인한 건강영향 가치 추정 1. 연구개요 ❏ 장애보정손실연수(DALY: Disability-Adjusted Life Year)는 WHO 및 환경부 등 국가별 통용지표로서, 주요 환경질환 간 비교뿐 아니라 질병 내 환경유해인자의 기여도 파악과 같은 환경보건정책에도 활용되고 있음 ㅇ DALY는 ‘조기사망으로 인해 손실된 수명’에 ‘장애로 인한 손실된 건강하게 살아갈 수 있는 연수’를 합한 것임 ❏ 선행연구에 의해 도출된 DALY의 원단위가 존재하므로 DALY로 표현되는 건강영향은 경제적 가치 추정이 가능함 ❏ DALY를 통해 평가되는 화학물질 관련 질환은 지속적으로 확대되고 있으며, 본 연구에서는 수은 및 IQ, 심혈관계 질환 등 화학물질 건강영향의 정량화 및 가치추정에 대한 사례를 검토하고자 함 2. 사례분석 ❏ DALY 관련 사례연구 ㅇ Grandjean and Bellanger(2017): 질병으로 확인되지 않는 신체의 기능적 변화에 주목하여 노출-반응 상관관계를 분석하고, 불확실성을 고려하여 기존의 DALY 계산 - 신경독성 영향: PBDEs, 인산계 농약 등 인식기능 손실 등 - EDCs(환경호르몬)의 영향: 프탈레이트, PBDEs, DE 등 생식계통, 당뇨, 비만 등 - 질산염으로 인한 암 발생: 대장암, 난소암, 갑상선암, 신장암, 췌장암 등 ❏ 적용 대상 국내자료 검토 ㅇ 검토할 수 있는 국내 관련자료 목록은 다음과 같음 - Kim et al.(2019): 주요 프탈레이트인 DHEP와 갑상선 기능과의 상관관계 메타분석을 수행함. 프탈레이트로 인한 국내 건강영향을 정량화하고 가치추정 방안을 마련할 필요가 있음 - 서울특별시 아리수 함유 질산염 관련 자료: 질산염 노출이 유발하는 암에 대한 DALYs 및 가치추정 방법론을 국내 아리수 질산염 농도 자료 등에 적용할 수 있음 ❏ 건강영향 정량화 및 가치 시범추정 사례 ㅇ 음용수 섭취를 통한 질산염의 건강영향 정량화를 Temkin et al.(2019)의 방법론에 따라 시범적으로 수행하고 이에 대한 가치를 각 질병별로 추정함 ㅇ 극소 저체중 발생 - 아리수 급수 대상 중 질산염 노출로 인한 극소 저체중 신생아의 IQ 손실 총합을 도출하면 연간 약 2,012임(2019년 기준) - IQ 변화 단위가치(안소은 외, 2018)를 적용한 결과 총 피해는 연간 약 280억 원으로 추정됨 ㅇ 질산염 음용으로 인한 대장암 발생 - 아리수 급수 대상 중 질산염 노출로 인한 대장암 발생은 2,951명으로 추정됨 - Temkin et al.(2019)에서 제시한 대장암 환자 1인의 DALYs인 7.2를 적용하고(대장암으로 인한 DALYs: 21,248), 안소은 외(2018)의 DALY 원단위 가치(2,339만원)를 적용하면 ‘질산염 노출로 인한 대장암 발생의 가치’는 연간 약 4,970억 원으로 추정됨 4. 향후 추진사항 ❏ 최근 연구 DALYs 방법론 적용을 통한 정량화 기법 및 질환 추가 고려가 필요함 ❏ 건강영향의 가치추정 방법론에 대한 보완이 필요함 ㅇ DALY 가치추정 과정에서 적용한 VOLY 외에도 QALY 등 삶의 질 변화를 고려할 수 있는 지표 등에 대한 추가적인 고려가 필요함 ❏ OECD에서 2020년부터 추진 중인 SWACHE 프로젝트(OECD, 2020)와의 지속적인 연계방안 마련과 관련 연구 수행이 필요함 ㅇ 우선, IQ 손실과 관련된 대상 화학물질을 확대하고 지불의사금액(WTP)을 도출하는 연구 등을 수행할 필요가 있음 Ⅰ. Value Estimation of Ecosystem Services for Habitat Quality 1. Research Overview ❏ Research objectives ㅇ To improve the application of the integrated analysis procedure by estimating the economic value and benefits of the change in ecosystem habitat quality using environmental economy integrated analysis procedure ㅇ To estimate the economic value based on the results of an assessment of the impact of changes in habitat quality on ecosystem services by Hyunno Kim et al. (2019) ❏ Research contents ㅇ Habitat quality, which indicates whether the proper conditions for wildlife inhabitation are provided, corresponds to supporting services among ecosystem services. ㅇ The results of an assessment of habitat quality based on land cover changes in Jeju Island, previously evaluated by Hyunno Kim et al. (2019), were used. ㅇ Preferences for ecotourism destinations in Jeju Island and their public perception were identified based on the Jeju Island Ecotourism Survey (2019), and the economic value of the change in habitat quality in 12 main tourist sites were estimated using the choice experiment (CE) method. 2. Literature Review ❏ Literature review on the economic valuation of biodiversity using the CE method ㅇ Biodiversity is often included as a major attribute of ecotourism. The properties of the CE method used in previous studies that evaluated the economic value of the major characteristics of ecotourism are as follows: - Chaminuka et al. (2012): village accommodation, village tours, visits to crafts market - Juutinen et al. (2011): biodiversity, number of visitors, rest areas information sign, admission fee - Naidoo and Adamowicz (2005): travel time, admission fee, type of tourism, accommodation, landscape features, number of bird species, likelihood of seeing large game animals 3. Survey Analysis ❏ Survey overview ㅇ To determine preferences for ecotourism destinations in Jeju Island, and their public perceptions, an online survey was carried out among 3,000 adults who visited some of the 12 main tourist sites in Jeju Island in the last 5 years (October 21-25, 2019). ❏ Choice experiment (CE) design ㅇ CE is a method to estimate the willingness to pay for changes in the attributes of the subject of analysis. ㅇ In the online survey, the main attributes of the 12 ecotourism destinations in Jeju Island included on-site facilities (0-100 points), information and interpretation services (5-point scale), habitat quality (0-1), and admission fee per person. ㅇ The choices in the questionnaire were suggested based on the respondent’s selection of preferred tourist sites and evaluation of related experiences. 4. Empirical Analysis ❏ Analysis model ㅇ In this study, the basic conditional logit (CL) model and the random parameter logit (RPL) model were used for the estimation to reflect the heterogeneity of the respondent’s preference. ❏ Analysis results ㅇ The NLOGIT 6.0 software was used for CL, RPL, and RPL+EC models. The coefficients of the CL model were estimated using maximum likelihood estimation, while those of the RPL and RPL+EC models were estimated using simulated maximum likelihood estimation. ㅇ All parameters matched the predicted sign and were statistically significantly estimated. The tourist sites with superior on-site facilities, information and interpretation services, and habitat quality had a higher probability of being selected, while those with higher admission fees had a lower probability of being selected. ㅇ Based on the AIC, BIC, and Pseudo R2 of the three estimation models, the RPL model was more preferred. Based on the likelihood-ratio (LR) test results of the RPL and RPL+EC models, the RPL+EC model was found to be more suitable. Therefore, the estimation results of the RPL+EC model were used to estimate the benefits of the change in habitat quality. ❏ Benefit estimation ㅇ The change in habitat quality over the past 10 years (2009-2019) varied per tourist site, but it increased by 0.19 on average. - The forest area with high habitat quality increased by approximately 100 km², and the farmland area with low habitat quality decreased by approximately 150 km2. These results indicate that the overall habitat quality increased. ㅇ Based on the results of the estimation of compensating surplus (CV) due to the change in habitat quality, it was deduced that the social benefit ranged from KRW 253 (Jeolmul Natural Recreation Forest) to KRW 2,302 (Bijarim Forest) per person. This excluded the case of Seogwipo Natural Recreation Forest, where there was no change in habitat quality. ㅇ Considering the number of visitors for each tourist site in 2019, the social benefit of the change in habitat quality ranged from KRW 0.18 billion (Jeolmul Natural Recreation Forest) to KRW 2.37 billion per year (Jungmun Daepo Beach Jusangjeolli Range), and the social benefit resulting from the improvement of habitat quality in the 12 tourist sites is estimated to be approximately KRW 12 billion per year. 5. Implications ❏ With respect to biodiversity and its benefits, the results of this study can be used as a reference for decision making in policies and projects requiring land-use development. Ⅱ. Comprehensive Evaluation of Ecosystem Services 1. Research background and objectives ❏ Research background ㅇ The land-use policy focusing on land-use efficiency caused an imbalance between ecosystem services. Hence, the Millennium Ecosystem Assessment (MA) stated that distinguishing tradeoffs and synergy, interactions existing between ecosystem services, are important (MA, 2010). ㅇ Interactions between ecosystem services occur when multiple services change due to a single driving force, or when services change in response to changes in other services (Bennett et al., 2009). - Interactions between ecosystem services can be identified through “bundles,” a set of ecosystem services that appear over space or time repeatedly (Raudsepp-Hearne, Peterson, and Bennett, 2010, p.5242). ❏ Research objectives ㅇ For environmental management using ecosystem services evaluation, it is very important to understand the relationship between ecosystem services. This can be achieved by applying various statistical methods. - The InVEST (Integrated Valuation of Environmental Services and Tradeoffs) Model was used to analyze ecosystem services. - Land-Use Land Cover (LULC) changes in 1989-2009 were evaluated through five ecosystem services, and regions where ecosystem service interactions changed were identified through principal component analysis (PCA) and cluster analysis. - Time series changes for several ecosystem services were estimated for the Jeju Island region. 2. Integrated Analysis Evaluation Method for Ecosystem Services ❏ Evaluation and verification of ecosystem services ㅇ In this study, a number of ecosystem services were evaluated and verified utilizing InVEST, an ecosystem service-based decision support model developed by the Natural Capital Project, and the comprehensive evaluation was performed based on the results. ❏ Integrated valuation of ecosystem services: heatmap ㅇ To overcome difficulties in comparing results due to different units and ranges of values for each ecosystem service, a heatmap was created to enable visual comparison. ❏ Trade-off relationship analysis of ecosystem services ㅇ To determine the trend in ecosystem service provision by region, ecosystem type, and region, a bundle of ecosystem services by region was derived. The correlation between water supply, water purification (nitrogen undercurrent, phosphorus undercurrent), carbon storage, and habitat quality was effectively represented using PCA. ㅇ After PCA, the regional results showed a tendency of homogeneous ecosystem service provision, which were presented as clusters through K-means clustering. 3. Status Evaluation of Ecosystem Services ❏ Current status evaluation ㅇ The ecosystem services across all regions of South Korea that were evaluated based on the 2009 land cover map are as follows: - In terms of water supply service, Hangang River and Nakdonggang River contribute the most, about 26 and 20 billion m³, respectively. Moreover, for the water quality control service, Hangang River and Nakdonggang River together underrun 30 tons of nitrogen and 2 tons of phosphorus, annually. In terms of water resources ecosystem services, Hangang River and Nakdonggang River were confirmed to be the main source of supply. - The carbon storage service playing a role in climate control and the habitat quality service related to the habitat base of ecosystems, plants, and animals were the services in which forests, grasslands, and wetlands had a high contribution. Therefore, the corresponding services tend to be dominant in Hangang River and Nakdonggang River, including the Gangwon-do, Gyeongsangbuk-do, and Gyeongsangnam-do regions with rich forests. ❏ Trade-off relationship analysis of ecosystem services ㅇ Seventeen domestic metropolitan governments were grouped into four bundles through PCA and K-means clustering on the amount of ecosystem services provided. ㅇ The four bundles were classified as (1) urban type, (2) agricultural type, (3) forest type, and (4) island type. They have the following characteristics: - Urban type bundle: This included Seoul, Incheon, Pusan, and Daegu. Due to the effect of by-products discharged from human activities, there was a large amount of phosphorus load. Hence, its undercurrent amount was high. - Agricultural type bundle: This included Gyeonggi, Sejong, Jeonbuk, Jeonnam, Chungnam, and Gwangju. Nitrogen and phosphorus were used as fertilizers in agricultural activities. Hence, their undercurrent amount was high. - Forest type bundle: This included Daejeon, Ulsan, Chungbuk, Gyeongbuk, and Gyeonnam. The habitat quality and carbon storage capacity was higher than other services, and the synergy between regulating and supporting services were observed. - Island type bundle: This included Jeju Island. The climate and soil are different from that of the inland region. It belongs to the subtropical wet climate zone and water quantity supply service is abundant. 4. Analysis of Changes in Ecosystem Services Based on Changes in Land Cover and Use ❏ Integrated evaluation of changes in ecosystem services based on changes in land cover and use ㅇ From 1989 to 2009, urbanized areas increased and forest decreased in almost all regions. Farmland tended to decrease in large urban areas and increase in other areas. ㅇ The total amount of service per unit area decreased in most regions such as Seoul, Pusan, Daegu, and Incheon. - The effect of decreasing forest area, which plays a central role in ecosystem services, was significant. ❏ Changes in the trade-off relationship of ecosystem services based on changes in land cover and use ㅇ The trade-off and synergistic effects of ecosystem services were determined through PCA, and the relationship between services was confirmed through the angle between vectors. ㅇ In South Korea, there is a trade-off relationship between habitat quality and carbon storage services and phosphorus regulating services. ㅇ The regions with noticeable trade-off and synergistic effects were Jeju, Gyeonggi, and Gwangju. - Jeju: When the water quality control service increased, the habitat quality and carbon storage services, which are provided by forests, decreased. - Gyeonggi, Gwangju: The water quality control service, along with the forest provisioning service such as habitat quality and carbon storage services, decreased simultaneously. 5. Implications ❏ In the process of developing an ecosystem services bundle and identifying the characteristics of service connection, it was expected that insights considering the advantages and disadvantages of each ecosystem service, along with the trade-off and synergistic effects between services when making decisions on land-use planning, would be gleaned. Ⅲ. Title ❏ In the second phase (2019-2021) of this study, a framework for estimating chemical damage, particularly the effect of chemicals on humans through dietary exposure in the ecosystem, will be established. ㅇ In the first year of the second phase, (2019), an ecological risk assessment of harmful environmental factors and a preliminary investigation on the estimated cost of damage were performed by reviewing the literature that assessed “the effect of chemicals on the ecosystem,” which is the first link route of the harmful factor-ecosystem (acceptor)-health impact. ㅇ In the second phase of the second year (2020), domestic cases of the ecological risk assessment and damage cost estimation due to major environmental hazards were investigated to find the possibility of connecting the ecosystem risk and value estimation based on “environmental harmful factor-ecosystem effect-value estimation” route. 1. Research Overview ❏ In 2016, the United States Environmental Protection Agency (US EPA) proposed a new form of risk assessment by adding ”ecosystem service endpoints that can be introduced into ecological risk assessment” to the existing ecological risk assessment endpoint (ES-GEAEs; ecosystem services generic ecological assessment endpoints) ㅇ This enables the quantitative benefit analysis and valuation from a human perspective, such as economic, socio-psychological, and health benefits that the ecosystem provides to humans. - Among them, the AQUATOX model makes it possible to comprehensively assess the effect of contaminants on the aquatic ecosystem. It has the advantage of linking entity-level toxicity data to multi-species or ecosystem reactions; thus, it is expected to have a wide application. - This study will review the utility of the model, whether it can link the “introduction of chemical change in ecosystem service-value evaluation.” In this regard, cases where ecological risk assessments were performed using the AQUATOX model were investigated. 2. Case Analysis ❏ AQUATOX model ㅇ AQUATOX is an ecological risk assessment model evaluating the complex environmental behavior and effect of general contaminants such as nutrients, sediments, and toxic chemicals in the aquatic ecosystem. - It is possible to move from a simple model to a model considering the food intake of a complex aquatic food web. ㅇ AQUATOX major input data and results - Input data: Input on biomass density for each species, water quality information, hydrographical information, and environmental changes (exposure to chemicals, eutrophication, etc.) - Results: Change in biomass density for each species, change in chemical concentration, change in water quality, etc. ❏ A domestic case study evaluating ecological impact using the AQUATOX model ㅇ Hanpil Lee (2012): Conducted a pioneering study on aquatic ecology risk prediction and long-term ecological impact assessment using the AQUATOX model, which was the first of its kind in South Korea. - Simulated the ecological change of Paldangho Lake, analyzed the biomass change according to the seasonal characteristics and food intake impact stages, and simulated the ecological impact of biomass by setting up a scenario of introducing agricultural pesticides (herbicide) and feed additives. ㅇ Jaehoon Yeom, Sangdon Kim (2019): Performed an ecological impact assessment of a scenario of toluene spill into the river - Distinct characteristics used to evaluate the domestic species - Used the method of converting biomass information to density ㅇ National Institute of Environmental Research (2018): Established the concept of aquatic ecosystem ecological modeling of the domestic large river mainstream in South Korea; selected AQUATOX as an analysis model, applied it to the appropriate range, and performed a study on materializing the prediction basis for the aquatic ecosystem change that fits domestic conditions. - In the case of running the food web-based model and species diversity model in parallel, it was suggested that the AQUATOX can be a good tool for reproducing, predicting, and interpreting ecosystems. ❏ An international case study evaluating ecological impact using the AQUATOX model ㅇ Galic et al. (2019): Conducted a representative case study research that linked “exposure to chemical-ecosystem service change-value evaluation” using the AQUATOX model. - Obtained the result (predicted) values of “abundance of game fish (biomass)” and “water clarity (secchi depths)” through the AQUATOX and performed valuation using these values. 3. Review on Research Methodology Application Method ❏ Based on a review of literature evaluating ecological impact using the AQUATOX model, it was possible to derive results on changes in biomass. ❏ There is a need to review how to connect value estimation in South Korea, similar to the ecology risk assessment results shown by Galic et al. (2019). ❏ Suggestions for linkage ㅇ There is a method to quantify the value of “biomass” through the hypothetical scenario selection and the questionnaire about chemical accident or environmental pollution. ㅇ The index linking method, in which the results of the AQUATOX model is linked to an index to determine the economic value of the corresponding index, can be considered. Ⅳ. Estimation of Health Impact Value due to Environmental Harmful Factor 1. Research Overview ❏ Disability-Adjusted Life Year (DALY) is a commonly used index by countries including WHO and Ministry of Environment. It is used not only for comparing major environmental diseases but also for environmental health policies, such as understanding the level of contribution of environmental harmful factors within diseases. ㅇ DALY is the sum of ”lifespan damaged by early death” and ”number of years living healthy that is damaged by disability.” ❏ Since the basic unit of DALY was derived from the previous studies, it is possible to estimate the economic value of the health impact expressed as DALY. ❏ Chemical-related diseases evaluated through DALY are continuously expanding. This study will review cases on the quantification of chemical health impact and value estimation, such as mercury and IQ, cardiovascular system disease. 2. Case analysis ❏ DALY-related case studies ㅇ Grandjean and Bellanger (2017): Focused on the functional change of the human body that is not identified as a disease, analyzed the correlation between exposure-response, and proposed the method to supplement the existing DALY calculation method. - Calculated disease burden using the concept of attributing factor (AF) - For instance, lead or mercury is known to cause adverse health impacts in the nervous system, while organophosphorus biocides and brominated flame retardant are neurotoxic materials, the cause-and-effect relationship of which are not recognized. The disease burden of this major group of materials was estimated. - The cost estimation results related to the neurotoxicity for four groups of materials accounted for over 2.5% of the world GDP, and using this method, the damage costs for cancer and respiratory diseases were obtained. ㅇ Prüss-Ustün A. et al. (2016): Reviewed 133 diseases and injuries through a literature review; and conducted a comparative risk assessment based on epidemiology estimation, specialist opinion, and disease propagation path information, and used the level of contribution of each population group for the calculation of disease burden for each environmental factor - When estimating the burden of disease, the level of contribution of the corresponding factor varied depending on whether the environmental factors were included. - Suggested the level of contribution of environmental and nonenvironmental factors on the disease burden for each target disease. ㅇ Navrud S. (2018): The OECD estimated the health impact, environmental impact, and economic benefit of phthalate, mercury, NMP (N-Methyl- 2-pyrrolidone), and formaldehyde through a literature review on the health impact and economic valuation of chemicals. ㅇ Temkin A. (2019): A study estimating the health impact of nitrate through drinking water intake and the corresponding economic damage. - The incidence of and number of patients with colorectal cancer, ovarian cancer, renal cancer, thyroid cancer, and bladder cancer, along with infant-related diseases, were presented among the health impacts of nitrate. - The annual DALYs for patients suffering from nitrate were deduced and converted to economic damage. 3. Review of Research Methodology Application Method ❏ Additional chemicals and diseases for DALY derivation ㅇ The subjects reviewed for the application of DALY derivation and economic damage estimation methodology in this study are shown below. - Neurotoxicity impact: loss of recognition functions, including PBDEs, phosphorus agricultural pesticides - Effect of EDCs (endocrine-disrupting chemicals): reproductive system, diabetes, and obesity including phthalate, PBDEs, and DE - Cancer caused by nitrate: colorectal cancer, ovarian cancer, thyroid cancer, renal cancer, pancreatic cancer, etc. ❏ Review of application target domestic data ㅇ The list of related domestic data that can be reviewed is shown below. - Kim et al. (2019): Conducted a meta-analysis of the correlation between DHEP, a major phthalate, and thyroid function. There is a need to quantify the domestic health impact due to the phthalate and prepared the value estimation method. - Data related to nitrate in Seoul Metropolitan Government Arisu: Methodology of DALYs and value estimation about cancer due to the exposure to nitrate can be applied to the domestic Arisu nitrate concentration data. ❏ Cases of health impact quantification and value demonstrative estimation ㅇ The quantification of health impacts of nitrate through drinking water intake was demonstratively conducted according to the methodology of Temkin et al. (2019), and the value for each disease was estimated. ㅇ Occurrence of very low weight - The total sum of IQ loss of infants with very low birth weight due to exposure to nitrate in the Arisu water supply was calculated to be approximately 2,012 per year (as of 2019). - Based on the application results of the IQ change unit value (Soeun Ahn et al., 2018), the total damage was estimated to be around KRW 28 billion annually. ㅇ Colorectal cancer incidence due to nitrate intake - Among the Arisu intake targets, colorectal cancer incidence due to the nitrate intake was estimated to be 2,951 cases. - Applying the DALYs of 7.2 for one colorectal cancer patient suggested by Temkin et al.(2019) (DALYs due to colorectal cancer: 21,248) and DALY basic unit value (KRW 23.39 million) by Soeun Ahn et al. (2018), the ”value of colorectal cancer incidence due to the exposure to nitrate” is estimated to be approximately KRW 49.70 billion per year. 4. Considerations for future enforcement ❏ Future research should consider disease and quantification techniques through the application of DALYs methodology. ❏ The methodology should include the economic valuation of health impacts. ㅇ In addition to the VOLY applied in the DALY value, further consideration is required for indices that can take into account the change of life quality such as QALY, apart from VOLY applied during the DALY value estimation process. ❏ The continuous link method with the SWACHE project propelled by the OECD from 2020 should be prepared, and related research needs to be performed. ㅇ Above all, the target chemicals related to the IQ loss should be expanded, and research on deriving the willingness to pay (WTP) should be carried out.

물류채산분석에서의 Trade-Off에 관한 연구

송계의(Gye-Eui Song) 한국해양비즈니스학회 2007 해양비즈니스 Vol.- No.9

  A important concept that supports total cost system approach in logistics strategy is cost trade-off. This acknowledges that changing patterns or functions of logistics strategy will cause some costs to increase and cause other costs to decrease. For example, high interest rate result in high inventary carrying costs, promoting firms to adopt various methods -- usually computer-based -- to control and reduce inventories. The net effect of cost trade-off, however, should be an overall cost decrease for a given level of performance, whether for the customer or for another department of the firm. Therefore, the concept of cost trade-off is very important in logistics strategy.