Saturated Hydraulic Conductivity of Different Land Use Types in Simian Mountain of Chongqing City

RUAN Xinzhu; CHENG Jinhua; Zhang Hongjiang; DU Shi-cai; LI Shiyou; ZHANG Fuming; WANG Xian; CHEN Xiaobing

doi:10.13961/j.cnki.stbctb.2015.01.015

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Saturated Hydraulic Conductivity of Different Land Use Types in Simian Mountain of Chongqing City

- Saturated Hydraulic Conductivity of Different Land Use Types in Simian Mountain of Chongqing City
- Bulletin of Soiland Water Conservation Vol. 35, Issue 1, Pages: 79-84(2015)
- 作者机构：
  
  1. 北京林业大学水土保持学院,北京,100083
  2. 重庆市林业局,重庆,401147
  3. 重庆市四面山镇人民政府,重庆,402296
  4. 重庆市四面山森林资源管理局,重庆,402296
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2015.01.015
  CLC：
- Published：2015
- 稿件说明：
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RUAN Xinzhu, CHENG Jinhua, Zhang Hongjiang, et al. Saturated Hydraulic Conductivity of Different Land Use Types in Simian Mountain of Chongqing City[J]. Bulletin of Soiland Water Conservation, 2015, 35(1): 79-84.
DOI：

RUAN Xinzhu, CHENG Jinhua, Zhang Hongjiang, et al. Saturated Hydraulic Conductivity of Different Land Use Types in Simian Mountain of Chongqing City[J]. Bulletin of Soiland Water Conservation, 2015, 35(1): 79-84. DOI： 10.13961/j.cnki.stbctb.2015.01.015.

摘要

[目的] 探讨不同土地利用类型和土壤理化性质对饱对导水率的影响。[方法] 采用定水头法测定四面山不同土地利用类型的饱和导水率

并运用回归分析

相关分析和主成分分析法分析其与土壤物理因子和有机质的关系

以及影响饱和导水率的主导因子。[结果] 各土地利用类型的平均饱和导水率均高于荒地

其顺序为:林地>农地>草地

林地中天然林饱和导水率大于人工林;饱和导水率随土层深度的增加呈负指数递减规律;饱和导水率与容重呈幂函数关系

与孔隙度呈正相关

与黏粒含量呈负相关;有机质含量的提高对饱和导水率有积极的促进作用。[结论] 影响饱和导水率的主导因子是容重、有机质、非毛管孔隙度和毛管孔隙度

其次

土壤机械组成对其也有一定影响。

Abstract

[Objective] The research focuses on the effect of the different land use types and soil physicochemical properties on saturated hydraulic conductivity.[Methods] The constant-hydraulic head method was used to measure soil saturated hydraulic conductivity(Ks) for different land use types in Simian Mountain of Chongqing City. Regression analysis

correlation analysis and principle component analysis was used to analyze the relationship between Ks and soil physical factors and organic matter.[Results] The Ks was the lowest in wasteland

and the descending order was:forest land > farmland> grassland. The Ks in natural forest was higher than that in artificial forest

and it was negative exponential declined with the increase of the soil depth. There was a power function relationship between Ks and unit weight

and Ks was positively related to soil porosity and negatively related to clay content. The increase of organic matter could improve the Ks.[Conclusion] The unit weight

organic matter

non capillary poropsity and capillary poropsity are the main factors that influence Ks. Besides

soil mechanical composition also has some impact on Ks.

关键词

Keywords

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