Evaluation of the forest ecosystem health in Beijing area

作     者：Ma Li Han Hai-rong Ma Qin-yan Liu Hong-wen Xia Wei-wei Cheng Xiao-qin 

作者机构：Key Laboratory for Silviculture and Conservation of Ministry of Education College of Natural Resources and Environment BeijingForestry University Beijing 100083 P. R. China 

出 版 物：《Forestry Studies in China》 (中国林学（英文版）)

年 卷 期：2007年第9卷第2期

页      面：157-163页

学科分类：090703[农学-森林保护学] 0907[农学-林学] 09[农学] 

基　　金：Foundation for the Key Laboratory of the Ministry of Education  (GJSYS100220402) 

主　　题：Beijing area forest ecosystem health evaluation Badaling Forest Center 

摘      要：The evaluation of ecosystem health has become one of the main research topics of ecosystem science, thus more and more assessment methods and frameworks have been put forward in recent years. However, the attention people pay to ecosystem health is actually more about what the social functions the ecosystem affords, which depend on the integrity and maintenance of the ecosystem structure and function, and the intensity of disturbance from outside. Accordingly, this research commenced from three main aspects, selected the evaluation indices, and then established the Evaluation Index System of Beijing Forest Ecosystem Health （EIS-BFEH）. In the EIS-BFEH, each of the three foundations contained an easily-operated and standard sub-index system, which compounded the specific natural and social conditions of Beijing and was concrete enough to measure and evaluate. Then with the method of the Analytical Hierarchy Process （AHP）, the comprehensive index （CI） could be obtained, which represented the health of the forest ecosystem. As a case study, the forest ecosystems in the Badaling area were sampled, evaluated, compared and ranked by use of the EIS-BFEH. The result show that the health of natural forests is much better than that of plantations in the Badaling forest center： the average comprehensive index of the former is 7.9, while the latter is only 6.6. From the results, it could also be found that there are nine units in the healthy state, two units in the subhealthy state, and only one unit of Robiniapseudoacacia in the morbid state.