土壤斥水性及其对坡面产流的影响研究进展
Progress in the Research of Soil Water Repellency and Its Influences on Overland Flow Generation
查看参考文献35篇
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文摘
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作为土壤性质的一个方面, 土壤斥水性可增加局部产流和加剧土壤侵蚀, 引起了学者的广泛关注. 本文在回顾土壤斥水性的产生原因及时空变化的基础上, 总结了近10年土壤斥水性对产流影响的研究结果, 主要包括: ①通过减小土壤基质势梯度, 降低坡面入渗率, 增加坡面产流量, 并改变产流方式; ②土壤斥水性的持续时间和强度是其影响坡面产流过程的关键因素, 直接决定产流的时间和数量; ③土壤斥水性对产流的影响具有尺度效应, 在点、径流小区尺度上, 斥水性可增加产流量, 但在较大尺度上对产流量的影响不显著. 当前, 对土壤斥水性的形成及变化规律、斥水性土壤的空间分布和对产流影响的定量研究还不足, 尚需要进一步深入, 为更好地解释水文过程变化提供理论依据. |
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其他语种文摘
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Water repellency(hydrophobicity)is a property of soils which increases local overland flow and causes soil degradation and has been concerned broadly. Important advances in the researches on the temporal and spatial variation of water repellency and its effects on overland flow generation have been achieved since 2000.This review summaries the last decade work on the effects of soil water repellency on surface runoff generation on the base of reviewing the cause, measurement and temporal and spatial variation of soil water repellency. The main effects include: 1)it has the effects of increasing the infiltration rate and surface runoff significantly and changing the pattern of runoff generation;2)the persistency and the intensity of soil water repellency are the key factors affecting surface runoff generation;3)the influence of soil water repellency on runoff generation has scale effects. The influence is significant at point and plot scales, while not notable at a lager scale. However, the impacts of soil water repellency on overland flow generation should be further clarified and researched quantitatively. Soil water repellency, as a factor affecting runoff generation, should be considered in the future researches on runoff generation. |
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来源
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地理科学进展
,2010,29(7):855-860 【核心库】
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关键词
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土壤斥水性
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入渗
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坡面产流
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地址
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1.
中国科学院研究生院, 中国科学院陆地水循环及地表过程重点实验室, 北京, 100101
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中国科学院地理科学与资源研究所, 中国科学院陆地水循环及地表过程重点实验室, 北京, 100101
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语种
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中文 |
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文献类型
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综述型 |
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ISSN
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1007-6301 |
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学科
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自然地理学 |
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基金
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国家973计划
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文献收藏号
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CSCD:3921090
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35
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