Distribution of Soil Physical Properties and Permeability on Slopes in Wenchuan Earthquake Zone

XU Xiao-jun; HE Bing-hui; HU Heng; XIONG Ming-biao; CHEN Yun-ying; YAN Dan-dan; YANG Yuan

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Distribution of Soil Physical Properties and Permeability on Slopes in Wenchuan Earthquake Zone

更新时间：2024-11-07

- Distribution of Soil Physical Properties and Permeability on Slopes in Wenchuan Earthquake Zone
- Vol. 25, Issue 6, (2011)
- 作者机构：
  
  1. 西南大学资源环境学院/三峡库区生态环境教育部重点实验室
  2. 四川省水土保持生态环境监测总站
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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XU Xiao-jun, HE Bing-hui, HU Heng, et al. Distribution of Soil Physical Properties and Permeability on Slopes in Wenchuan Earthquake Zone[J]. 2011, 25(6).
DOI：

XU Xiao-jun, HE Bing-hui, HU Heng, et al. Distribution of Soil Physical Properties and Permeability on Slopes in Wenchuan Earthquake Zone[J]. 2011, 25(6). DOI：

摘要

以汶川县草坡河流域为研究区域

探讨震后4种恢复类型的土壤物理性质和渗透性的坡面分布特征。结果表明

(1)由于地震造成的生态破坏

土壤容重、总孔隙度、非毛管孔隙度和毛管孔隙度等物理性质在坡面分布表现出显著差异。(2)坡面不同部位对自然植物恢复坡面的最大持水量有显著的影响

表现为坡上>坡中(坡下);对有植物长期演替的对照坡面的非毛管持水量有显著的影响

其表现为坡上>坡中>坡下。(3)不同恢复类型土壤入渗率在空间格局上表现不一致

但在时间格局上表现出相同的3区段变化趋势

土壤渗透速率与入渗时间呈非线性关系

经拟合表现出对照地块的土壤渗透数学模型的拟合度最高

且随坡面部位下移拟合度越高。(4)同一坡位的渗透性能在不同恢复类型坡面上表现出明显的差异:对照地块>人工种植>自然恢复>完全裸露

坡位对同一恢复类型土壤渗透率在坡面水平分布上的影响表现为坡上高于坡中和坡下。

Abstract

The distribution of soil physical properties and permeability with four restoration patterns were studied in Caopo river watershed

which located in Wenchuan county.The results showed:(1)Soil bulk density

total porosity

capillary porosity and noncapillary porosity

and other physical properties in the slope surface distribution showed significant differences

because of the ecological destruction caused by Wenchuan earthquake.(2)The water holding capacity of natural plants returned slope surface biggest had a ...

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