http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 서환석 ( Hwanseok Seo ) (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
k-NN기법을 이용한 산림바이오매스 자원량 평가 -강원대학교 학술림을 대상으로-
서환석 ( Hwanseok Seo ),박동환 ( Donghwan Park ),임종수 ( Jongsu Yim ),이정수 ( Jungsoo Lee ) 한국산림과학회 2012 한국산림과학회지 Vol.101 No.4
This study purposed to estimate the forest biomass using k-Nearest Neighbor (k-NN) algorithm. Multiple data sources were used for the analysis such as forest type map field survey data and landsat TM data. The accuracy of forest biomass was evaluated with the forest stratification horizontal reference area (HRA) and spatial filtering. Forests were divided into 3 types such as conifers broadleaved and Korean pine (Pinus koriansis) forests. The applied radii of HRA were 4km 5km and 10km respectively. The estimated biomass and mean bias for conifers forest was 222 t/ha and 1.8 t/ha when the value of k=8 the radius of HRA was 4km and 5×5 modal was filtered. The estimated forest biomass of Korean pine was 245 t/ha when the value of k=8 the radius of HRA was 4km. The estimated mean biomass and mean bias for broadleaved forests were 251 t/ha and-1.6 t/ha respectively when the value of k=6 the radius of HRA was 10km. The estimated total forest biomass by k-NN method was 799.000t and 237 t/ha. The estimated mean biomass by kNN method was about 1t/ha more than of filed survey data.
-
-
일본 REDD+의 국가 전략 및 시사점 -양국간 크레딧 메커니즘(JCM)을 중심으로-
박정묵 ( Jeongmook Park ),서환석 ( Hwanseok Seo ),이정수 ( Jungsoo Lee ) 한국임학회 2016 한국산림과학회지 Vol.105 No.2
본 연구는 Post-2020을 대비하는 일본의 REDD+의 국가전략과 각 기관별 추진현황을 파악하고, JCM(Joint Credit Mechanism) REDD+ 가이드라인의 문제점에 대한 우리나라 REDD+의 대응 방안 및 시사점을 제시하는 것을 목적으로 한다. JCM-REDD+ 가이드라인의 기술적 한계를 보면, REDD+ 사업의 대상이 되는 산림의 적합성은 세이 프가드 간섭이 적은 곳을 선점하는 문제가 있으며, 참조배출기준선의 설정은 기준연도에 따라서 추세선이 변화하기 때문에 배출량 차이가 발생할 수 있다. 또한, REDD+의 배출이동(누출)은 누출지역이 발생하였을 때, 누출면적과 관 계없이 일정계수를 곱하여 산출하기 때문에 불확실성을 포함하고 있으며, 모니터링 실시방침은 국가 및 준국가 단위의 방법만을 제시하고 있어 프로젝트 단위의 방법론이 필요하다. 마지막으로 세이프가드에 대한 방침은 세부사항 없이 목록으로만 제시하고 있어 국제통용의 항목 규정이 필요하다. 이와 같은 문제점들은 크레딧의 분배와 계층적 접근(Nested Approach) 등의 더블카운팅(Double Counting) 문제와도 관련이 있으며, 앞으로 우리나라는 이를 고려하 여 REDD+ 사업을 시행해야 할 것이다. The study aims to examine Japan``s National REDD+ Strategies prepared for Post-2020 and the status of its implementation by organizations in Japan, and then to suggest the potential REDD+ countermeasures against Joint Credit Mechanism (JCM) for Republic of Korea and their implications. As for the technical limitations of the guidelines of REDD+ under the JCM, it is pointed out that forests located at the place with less potential safeguard intervention tend to be selected as the target area for a project and that, as reference emission trend changes depending on the basic year of the baseline, differences could occur among the amounts of greenhouse gas emission. In addition, it is pointed out that the result of the calculation of the displacement of emissions, or leakeage, in REDD+, can have an uncertainty, since the calculation is done by just multiplying leakage area by certain coefficients, without considering the size of the leakage area. Furthermore, the lack of implementation guideline or methodologies for a project level is also pointed out as a limitation, considering that there are only some national and sub-national monitoring guidelines at present. Finally, internationally accepted guidelines for safeguard and its sub-items needed to be prepared, as current safeguard policy only includes lists without detailed items. Such things mentioned above are all related to, and can lead to the problem of double counting of items in Nested Approach etc., as well as of the distribution of credits. Therefore, Republic of Korea should take these into consideration when implementing its REDD+ projects.
ScienceON연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
