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Effects of vegetation rehabilitation on soil saturated hydraulic conductivity in Ziwuling Forest Area
Authors
华娟
张扬
梁向锋
赵世伟
Publication date
1 January 2009
Publisher
Abstract
通过对子午岭林区不同植被的土壤性质进行实验室测定和野外调查,对饱和土壤水分运动的重要参数之一土壤饱和导水率(Ks)及其相关因子进行了多元分析和通径分析,揭示了植被恢复提高土壤水分传输性能的机理,主要结论如下:土壤有机质是子午岭林区九种植被下土壤饱和导水率提高的主要驱动因子。不同植被下的土壤饱和导水率均随深度的增加而迅速降低,尽管草地和先锋草地在5~10cm深度有一强透水层。土壤饱和导水率在剖面上的平均值,从辽东栎、早期森林、灌丛、先锋草地、弃耕地到草地依次降低。灌丛与草地、弃耕地的差异达到显著水平,辽东栎顶级群落的饱和导水率最高,植被的恢复明显提高了土壤饱和导水率。土壤容重、毛管孔隙度、>0.25mm团聚体含量及粘粒含量直接影响土壤饱和导水率。土壤有机质含量的提高能够改善容重、毛管孔隙度、团聚体含量等物理性质
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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oai:ir.iswc.ac.cn/:361005/395
Last time updated on 21/09/2018