Controlling Study of Forest Biodiversity Variation in China

作     者：Zhang Ying School of Economics and Management,Beijing Forestry University,Beijing 100083,P.R.China 

出 版 物：《Forest Ecosystems》 (森林生态系统(英文))

年 卷 期：2003年第S1期

页      面：37-41页

学科分类：09[农学] 0903[农学-农业资源与环境] 

主　　题：forest biodiversity status analysis structural characteristics optimal control China 

摘      要：To continue the research project—Analysis of Forest Biodiversity Changes in China,the author developed the graymodel GM（1,2）,as well as the status spatial characterization model with the optimal control model for forest biodiversity variationby using some mathematical approaches and knowledge in economic ***,the structural characteristics of forestbiodiversity variation were *** paper points out that the variation of forest biodiversity is instable,but it can be controlledand known *** close-loop feedback controlling and the optimal controlling are also *** is to say,thepre-established targets of forest biodiversity variation can be met by adjusting the policy variables,thus alleviating the pressure offorest *** variation of forest biodiversity can be shown by the pressure index of *** paper finally shows thatwhen the pressure index of forest biodiversity is a constant 100,the optimal movement curves are （?）(t)=57.941 8+371.9109e;and （?）(t)=129.076 5-3.8591e;respectively.