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水土保持学 5 S157 2 S157.1 2
人文地理学 2 生态学 2 自然地理学 2
F062.2 1 F301.2 1 F323.8 1
F327 1 P208 1 P333.4 1
P467 1 Q15 1 Q948 1
Q948.1 1 S157.2 1 TU985.2 1
TV697 1 TV72 1 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 1
X171 1 X171.1 1 X196 1
X321.25 1 土壤学 1 地球科学 1
地质年代学 1 水文地理学 1 环境科学技术 1
环境科学技术::环境学::水体环境学 1 生态经济学 1 纳米科技与材料物理::新型功能材料与固体内耗 1
经济学 1 经济学::生态经济学 1

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