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논문 : 산불로 인한 지표층 연소량 및 온실가스 배출량 추정
이병두 ( Byung Doo Lee ),윤호중 ( Ho Jung Youn ),구교상 ( Kyo Sang Koo ),김경하 ( Kyong Ha Kim ) 한국임학회 2012 한국산림과학회지 Vol.101 No.2
산불은 전 세계적으로 다량의 온실가스를 배출하여 지구온난화에 기여한다. 본 연구에서는 산불로 인한 지표층 연료의 연소량과 이로 인한 온실가스 배출량을 분석하고자 하였다. 이를 위해 51개 산불을 대상으로 소나무림과 활엽수림으로 구분하고, 다시 지표화와 수관화 피해 지역으로 나누어 잔존 연료량을 채취하여, 미연소 지역의 연료량과 일원분산분석을 수행하였다. 그 결과 활엽수 지표화 지역은 8,361 kg/ha, 소나무 지표화 지역은 8,055 kg/ha, 소나무 수관화 지역은 12,333 kg/ha이 연소되어, 수종별·산불행태별로 차이가 있었다. 이때의 연소율은 각각 78, 59, 90%이었다. 이산화탄소, 메탄, 아산화질소 등의 온실가스 배출량은 활엽수 지표화 연소지역 15,856 kg/ha, 소나무 지표화 연소지역 14,834 kg/ha, 소나무 수관화 연소지역은 약 22,709 kg/ha이었다. Globally, the forest fires are a significant contributor of carbon dioxide and other greenhouse gases in the atmosphere. In this study, fuel load consumed by forest fire and emission of green house gases were analysed in the surface layer. For this, remaining fuel was collected and weighed with the species (Japanese red pine, deciduous) and the forest fire types (surface fire, crown fire) in the 51 forest fires. 8,361 kg/ha fuel load was consumed in deciduous forest damaged by surface fire, and 8,055 kg/ha, 12,333 kg/ha in Japanese red pine burned by surface fire and crown fire. The combustion ratios were 78, 59, and 90%, respectively. 15,856 kg/ha the green house gases such as CO2, CH4, CH4 in deciduous forest burned by surface fire was emitted and 14,834 kg/ha, 22,709 kg/ha in Japanese red pine burned by surface fire and crown fire.
수량화Ⅱ 분석을 이용한 사방지 유지/해제 기준인자 선정
서준표 ( Jun Pyo Seo ),윤호중 ( Ho Joong Youn ),이창우 ( Chang Woo Lee ),우충식 ( Choong Shik Woo ),최두영 ( Doo Young Choi ),정선환 ( Seon Hwan Jeong ),권현정 ( Hyun Jung Kwon ),김경하 ( Kyong Ha Kim ),곽주린 ( Joo Rhin Kwak ) 한국임학회 2014 산림과학 공동학술대회 논문집 Vol.2014 No.-
본 연구는 사방지의 유지 또는 해제를 판단하기 위한 판정기준표의 인자를 선정하기 위하여 수행되었다. 연구에는 사방협회에서 실시하고 있는 사방시설 점검보고서의 최근 3개년 자료(1,387개소)를 이용하였다. 수량화Ⅱ 분석결과, 각 인자별 독립성 및 상관관계를 고려하여 최종적으로 판별적 중률이 가장 높게 나타나는 6개의 인자와 점수는 사방공작물 상태(1.5646)>초류의 피복상태(0.6971)>침식발생 여부(0.5405)>하부계류상태(0.4051)>식재목 생육상태(0.1139)>기타녹화시설 상태(0.0211) 순으로 나타났다. 사방지의 현재 상태를 유지군과 해제군으로 나누었을때 판별적중점은 0.0644로 나타났고, 이를 이용하여 유지군과 해제군의 실측치와 추정치로 재분류한 결과 오분류율은 유지군 10%, 해제군 3%의 오분류율로 나타나 전체 판별적중률 96.8%, 상관비 0.61로 나타났다. 이는 일반적 수량화Ⅱ류의 적중률 판단기준인 판별적중률 75%, 상관비 0.5보다 높은 적중률로 나타났다. 본 연구결과 효과적인 사방지의 유지 또는 해제 기준마련의 기초자료를 제공할 수 있을 것으로 판단된다. This study was carried out to select the criterion factors for keeping or removing the erosion control district. We use the inspection reports of erosion control works during the last 3 years provided by sabang association. On the results of quantification Ⅱ analysis, the factors and scores showed the following order considering with the corelation and independence of each factor: the state of erosion control structures(1.5646) > the state of coverage(0.6971) > whether the erosion occur or not(0.5405) > the state of downstream(0.4051) > the state of growth of planted tree(0.1139) > the state of extra greening facilities(0.0211). The criterion score showed 0.0644 to decide whether the state of the erosion control district is keeping or removing. As the result of reclassification with two groups by using this score, the misclassification rate showed that keeping group was 10%, removing group was 3%. And overall hitting rate showed 96.8% and correlation ratio showed 0.61. This values are relatively high than the traditional standard that hitting rate is 75% and corelation ration is 0.5. This results of this research is useful to judge on keeping or removing erosion control district.
유윤진 ( Ryu Yoon-jin ),조동길 ( Cho Dong-gil ),윤호중 ( Youn Ho-jung ),이창우 ( Lee Chang-woo ),이지현 ( Lee Ji-hyun ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2018 한국환경복원기술학회지 Vol.21 No.2
As a result of climate change, mountain sediment disasters due to localized heavy rain and mountain development are occuring more frequently, thus, increasing social attention to and demand for soil erosion control projects. However, since 2011 Seoul Wumyeon Mountain landslide, the public is expressing increasing anxiety as well as negative perception regarding defective project results. Therefore, this study investigated promotional terms and information media related to soil erosion control projects according to the consumer in order to increase awareness of soil erosion control projects. In this study, the information consumers were divided into experts and the general public and conducted a survey related to promotional terms and media for communicating relevant information. In the result, the experts chose landslide prevention and recovery projects (41.8%) as an appropriate promotional term for soil erosion control projects. The general public, however, chose mountain sediment disaster prevention projects (32.5%) as the appropriate promotional term. However, the analysis showed that it would be necessary to develop an promotional term that can encompass the concept of ‘disaster prevention’ including forest and soil disaster as the word ‘landslide’ can suggest soil erosion control is limited to landslides only. In the survey regarding the media for communicating information related to soil erosion control projects according to the consumer type, the experts preferred radio and TV as media to communicate the relevant information, while, among the general public, the youths preferred social media such as Facebook and Twitter (22.22%) and adults radio and TV (34.07%), As for the most effective way to promote soil erosion control projects, the experts chose traditional promotinal media such as newspaper, radio, and TV (0.172) whereas the adults and youths preferred the internet and Facebook (0.089). It appears that using the preferred media for communicating information related to soil erosion control projects according to the consumer type will be effective way to promote soil erosion control projects.