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 : 유재심 ( Yu Jaeshim ) (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
다변량 환경 공간변수 주성분 분석을 통한 남,북 생태계 차이
유재심 ( Jaeshim Yu ),김경민 ( Kyoungmin Kim ) 한국환경복원기술학회 2015 한국환경복원기술학회지 Vol.18 No.4
The objectives of this study are to analyze the quantitative ecological principal components of Korean Peninsula using the multivariate spatial environmental datasets and to compare the ecological difference between South and North Korea. Ecological maps with GIS(Geographical Information System) are constructed by PCA(Principal Component Analysis) based on seventeen raster(cell based) variables at 1km resolution. Ecological differences between South and North Korea are extracted by Factor Analysis using ecosystem maps masked from Korean ones. Spatial data include SRTM(Shuttle Radar Topography Mission), Temperature, Precipitation, SWC(Soil Water Content), fPAR(Fraction of Photosynthetically Active Radiation) representing for a productivity, and SR(Solar Radiation), which all cover Korean peninsula. When it performed PCA, the first three scores were assigned to red, green, and blue color. This color triplet indicates the relative mixture of the seventeen environmental conditions inside each ecological region. The first red one represents for ‘physiographic conditions’ worked by high elevation and solar radiation and low temperature. The second green one stands for ‘seasonality’ caused by seasonal variations of temperature, precipitation, and productivity. The third blue one means ‘wetness condition’ worked by high value such as precipitation and soil water contents. FA extraction shows that South Korea has relatively warm and humid ecosystem affected by high temperature, precipitation, and soil water contents whereas North Korea has relatively cold and dry ecosystem due to the high elevation, low temperature and precipitation. Results would be useful at environmental planning on inaccessible land of North Korea.
-
유재심 ( Yu Jaeshim ),박현 ( Park Hyun ),이상혁 ( Lee Sang-hyuk ),김경민 ( Kim Kyoungmin ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2016 한국환경복원기술학회지 Vol.19 No.4
The objectives of this study were to establish the slope criteria and analyze the forest land restoration plan in North Korea. Reviewing the literature of the countries, the relationships among the climate, erosion controls, and slope criteria with forest restoration programmes, implemented were analyzed. Comparison of forest land management policies was conducted between South and North Korea. The soil erosion controls using biological barriers were at 15~20°slopes in arid climate regions and 25~30° in humid climate regions. In the case of South Korea, an afforestation policy from the「Act on Clearance Project of Slash-and Burn Agriculture」of 1966 was enforced on mountains with slope greater than 20°, however, at present, the「Marginal Cropping Land Policy」recommends cropping lands with slope bigger than 8.5° to forest land. In 1961, in「Land Reclamation of One Million Hectare」, North Korea reclaimed additional cropping lands with slope bigger than 8.5°, and currently, the「Act on Forestry」states to enforce reforestation with slope bigger than 20°. This study recommends that South Korea aids for forest land restoration in North Korea based on the different stages of their development on reconciliation and cooperation between South and North Korea.
-
유재심 ( Yu Jaeshim ),최원태 ( Choi Wontae ),이상혁 ( Lee Sanghyuk ),최재용 ( Choi Jaeyong ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2016 한국환경복원기술학회지 Vol.19 No.6
Development activities in forest areas are analysed based on degree of slope, altitude, land cover, and prefectures in order to improve the capacity of existing regulations of `feasibility of forest land conversion` and `assessment of forest land characteristics` in this research. 959 land based developments between year 2007 and 2013 have been analysed. A development site includes over 50% of forest is categorized as a forest type, degree of slope is steeper than 8.5° as mountain type, and a development included in the both categories as combined type. Distribution characteristics of the above three types are analysed by development categories and regions adopting Relative Mountain Development Index(RMDI). In results, 44.94% of total development activities have been carried out in Gyeongsang Do in order of urban development, industrial complex, sports facilities, and soil and stone collection quarrying. Developments less than 0.3k㎡ which are exempt from the feasibility of forest land conversion regulation consist 86 cases of forest type, 78 cases in mountain type, and 78 cases in combined type. SAI by slope range showed the highest value of 1.55 in less than 5° and the lowest value of 0.69 between 20°-25°. RMDI value in Gyeongsang Do where mountain ratio is 67.05% appeared 1.17, which is 5 times more than Gangwon Do where mountain area ratio is 81.30%, and 2 times more than Chungchung Do where mountain area ratio is 51.24%. Development activities in forestland in Korea showed unequal distributions and 26% of those developments were not subjected to the feasibility of forest land conversion regulation.
ScienceON
KISS연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
