紫色土坡地壤中流特征

徐勤学; 王天巍; 李朝霞; 蔡崇法; 史志华

紫色土坡地壤中流特征

华中农业大学农业部亚热带农业资源与环境重点实验室, 湖北, 武汉, 430070

基金项目: 国家重点基础研究发展计划(973)资助项目(2007CB407201);国家自然科学基金资助项目(40501040;40671114)

详细信息

作者简介:
徐勤学(1982- ),男,湖南新宁人,博士研究生,主要从事水土保持与农业生态研究.E-mail:xqx@webmail.hzau.edu.cn

通讯作者:
李朝霞, E-mail: zxli@mail.hzau.edu.cn

中图分类号: P334.2
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- 文章访问数: 111
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出版历程
- 收稿日期: 2009-04-05
- 刊出日期: 2010-03-24

Characteristics of interflow in purple soil of hillslope

Key Laboratory of Subtropical Agriculture and Environment, Ministry of Agriculture, Huazhong Agricultural University, Wuhan 430070, China

Funds: The study is financially supported by the NationalBasic Research Program of China (No.2007CB407201) and the National Natural Science Foundation of China (No.40501040;No.40671114)

摘要

摘要: 壤中流是紫色土坡地径流的重要组成部分。通过野外人工模拟降雨试验,研究了不同降雨条件下紫色土坡地壤中流特征和地表状况变化对壤中流的影响,结果表明:①未扰动荒坡地壤中流径流系数是裸露坡耕地的3～15倍,平均流量是坡耕地的7～33倍,荒坡地和坡耕地壤中流特征差异在大雨强条件下表现更为明显;②坡耕地壤中流径流系数随降雨强度的增加而显著减少,但荒坡地壤中流受雨强的影响不明显;③荒坡地壤中流随地表状况变化而改变,植被覆盖的减少和降雨对疏松地表的压实导致壤中流明显减少。
- 紫色土 /
- 降雨强度 /
- 壤中流 /
- 地表状况
Abstract: The interflow constitutes an important portion of total runoff in purple soil of a hillslope.A series of artificial field simulation experiments were conducted to explore the characteristic of interflow in the purple soil of hillslpoe in the different rainfall intensities and land surface conditions.Experimental results show that the observed runoff coefficient and the average interflow for the interflow on undisturbed wastelands are 3 to 15 times and 7 to 33 times that of the observed on bare cultivated lands,respectively.Such characteristic differences in interflow generations on the two lands will become more evident with the increase of rainfall intensities.The observed runoff coefficient for the interflow on bare cultivated lands decreases significantly with the increase of rainfall intensities,while such a characteristic of interflow is not found on undisturbed wastelands.Interflow generations on undisturbed wastelands vary with land surface conditions such as soil compactions and vegetation densities.Surface soil compaction due to heavy rainfall and the decrease in vegetation cover will contribute to a significant reduction of interflow generations on undisturbed wastelands.
- purp le soil /
- rainfall intensity /
- interflow /
- soil surface conditions

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参考文献(20)

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文章访问数: 111
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紫色土坡地壤中流特征

作者简介: 徐勤学(1982- ),男,湖南新宁人,博士研究生,主要从事水土保持与农业生态研究.E-mail:xqx@webmail.hzau.edu.cn

通讯作者: 李朝霞, E-mail: zxli@mail.hzau.edu.cn

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出版历程

Characteristics of interflow in purple soil of hillslope

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出版历程

目录

作者简介:
徐勤学(1982- ),男,湖南新宁人,博士研究生,主要从事水土保持与农业生态研究.E-mail:xqx@webmail.hzau.edu.cn

通讯作者:
李朝霞, E-mail: zxli@mail.hzau.edu.cn