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GIS-based analysis of forest degradations in Baihe Forestry Bureau,northeast China

查看全文 作　　者：ZHOU Li, DAI Limin , Guofan Shao, XU Dong, WANG Hui & BAI Jianwei Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;Graduate University of Chinese Academy of Sciences, Beijing 100101, China;Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN 47907, USA;Department of City Development, Jinan University, Jinan 250002, China;Academy of Forest Inventory and Planning, State Forestry Administration, Beijing 100714, China 高影响力作者 出　　处：《Science China(Technological Sciences)》索引2006年第49卷第z1期,共10页高影响力期刊 基　　金：jointly supported by the Overseas Scholar Foundation of CAS(Grant No.C13HU&C13HK);the National Natural Science Foundation of China(Grant Nos.30470302 and 70373044);China's Ministry of Science and Technology(Grant No.04EFN216600328). 摘　　要：Forests in the Changbai Mountains are important timber sources for economic development of the society and provide ecological services in northeast China. In order to strengthen forest resource management, this paper analyzed management-induced changes in forest structure, tree species composition and forest landscape pattern from 1987 to 2000 for Baihe Forestry Bureau in Jilin Province based on digitized forest parcel maps and forest survey data. The results suggested that the area of Mature, High-Stocking, and Close-Canopy Forests decreased by 31.4%, 55.9% and 10.7% respectively; volume of Mixed Forest, the native forest vegetation type, decreased by 17.8%;the number of patches increased tremendously but the mean patch density decreased sharply for Mature, High-Stocking, Close-Canopy, and Mixed Forests. All the changes in forest structure, species composition, and landscape pattern indicated severe degradations going on with the forests in Baihe Forestry Bureau. Because of the effect of degradation to forest services, restoring forest resources and protecting biodiversity has become urgently important. The strategies of sustainable forest management need to be worked out and implemented. 关 键 词：GEOGRAPHIC information system, FOREST management, Changbai Mountains, FOREST change, FOREST decline.
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