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中国农学通报 ›› 2005, Vol. 21 ›› Issue (4): 318-318.

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The Study on Self-Restoration of Different Runoff Plots in PingChang Sichuan

张 莉,何丙辉,李旭光,张小林,王 补,郝云庆   

  • 出版日期:2005-04-05 发布日期:2005-04-05

The Study on Self-Restoration of Different Runoff Plots in PingChang Sichuan

Zhang Li, He Binghui, Li Xuguang, Zhang Xiaolin, HaoYunqing   

  • Online:2005-04-05 Published:2005-04-05

摘要: 四川省平昌县是长江流域生态修复的试点县之一,生态修复区布设在“长治”工程竣工后治理程度较好的小流域内,主要采取封禁治理的措施,加强植被的自我恢复能力。文章选取不同海拔,坡度,坡向,不同林种配置和林分结构的四个径流区进行研究,通过对植被重要值、物种多样性、优势度、均匀度等的计算分析以及对土壤肥力的测定分析,得出以下结论:(1)物种多样性较高的径流区其土壤肥力也较高,表现为:群落总体物种多度顺序为:深溪沟>许家沟>涵水沟>国林沟,土壤有机质含量大小顺序为:深溪沟>许家沟>涵水沟>国林沟,特别是灌草类越多,土壤肥

Abstract: Pingchang is one of the counties of self-restoration in the upper and middle reaches of Yangtze River. The self-restoration plots, located in the better management small watershed of “Changzhi project”, take measures of closing hillsides to improve the abi