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生态学 7 环境学 6 自然地理学 6
土壤学 4 Q948 2 S715 2
S718.5 2 S718.54 2 林学 2
P901 1 Q948.154 1 S714 1
S812.2 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 X221 1
X322 1 农学::土壤学::土壤化学 1 农学::土壤学::土壤物理学 1
地球科学::地球化学::生物地球化学 1 地球科学::地理学::自然地理学 1 摄影测量与遥感技术 1
植物保护学 1 水土保持学 1 水文地理学 1
灾害学 1

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