A Study on Forest Species Diversity and Its Ecological Service Function in the Plateau Area of Western Sichuan

作     者：Deng Yu-lin, Wang Yu-kuan, Peng Pei-haoInstitute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China Deng Yu-lin, Wang Yu-kuan, Peng Pei-haoInstitute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China

作者机构：Institute of Mountain Hazards and EnvironmentChinese Academy of Sciences Chengdu 610041 SichuanChina 

出 版 物：《Wuhan University Journal of Natural Sciences》 (武汉大学学报（自然科学英文版）)

年 卷 期：2003年第8卷第3B期

页      面：975-980页

学科分类：07[理学] 0713[理学-生态学] 

基　　金：Supported by the Knowledge Innovation Program of Chinese Academy of Scicnces(KZCX2-SW-319-4) 

主　　题：bio-diversity ecological service function plateau area western Sichuan 

摘      要：This paper presents a study on species diversity and its ecological service function in the plateau area in western Sichuan. The results show that species diversity in the plantations on the cutover land has a tendency to increase and that its ecological service function is to be improved with stand age growing. The species diversity in forest communities is also gradually increased on different succession stage till reaching a climax level. But the species diversity in the climax community is slightly decreased before it reaches a relatively constant status. Ecological service function of diversity is gradually strengthened with the progress of succession. In addition, species diversity in a stand in a similar site and at a same age differs among forest types. Species diversity index within a coniferous and broad-leaved mixed forest is larger than that within a coniferous forest. Meanwhile, species diversity enriches as the tree density increases.