| 农牧交错带地表覆盖物对土壤入渗的影响 |
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| 引用本文： | 卢晓杰,李瑞,张克斌.农牧交错带地表覆盖物对土壤入渗的影响[J].水土保持通报,2008(1):1-5. |
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| 作者姓名： | 卢晓杰 李瑞 张克斌 |
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| 作者单位： | 北京林业大学水土保持学院, 水土保持与荒漠化防治教育部重点实验室, 北京 100083;北京林业大学水土保持学院, 水土保持与荒漠化防治教育部重点实验室, 北京 100083;北京林业大学水土保持学院, 水土保持与荒漠化防治教育部重点实验室, 北京 100083 |
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| 基金项目： | 国家自然科学资助项目“半荒漠地区湿地植被群落时空分布特征研究”(30771764);国家林业局项目“盐池荒漠化定位监测”(660550) |
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| 摘 要： | 为了解我国北方农牧交错区不同地表覆盖物对土壤入渗的影响,以宁夏回族自治区盐池县为例,采用样线调查法进行地被状况调查,并在所设样线各样方内对应进行入渗试验。通过对外业数据的处理、分析,对各种地被状况影响入渗的情况进行了探讨。结果表明,植物的生长对水分入渗具有促进作用。植被盖度与入渗深度之间呈指数相关关系,相关系数达0.893。枯落物的覆盖对水分的入渗具有明显的阻碍作用,两者呈对数相关关系,相关系数高达0.921。生物结皮对入渗具有明显的阻碍作用,结皮盖度与入渗深度之间呈线性负相关,相关系数为-0.765,说明结皮的存在使土壤水分呈现浅层化趋势。
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| 关 键 词： | 植物 结皮盖度 土壤入渗 |
| 收稿时间： | 2007/4/4 0:00:00 |
| 修稿时间： | 2007/10/3 0:00:00 |
Influence of Surface Coverage on Soil Infiltration in the Farming-grazing Transitional Zone |
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| LU Xiaojie,LI Rui and ZHANG Kebin.Influence of Surface Coverage on Soil Infiltration in the Farming-grazing Transitional Zone[J].Bulletin of Soil and Water Conservation,2008(1):1-5. |
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| Authors: | LU Xiaojie LI Rui and ZHANG Kebin |
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| Institution: | College of Soil and Water Conservation, Beijing Forestry University, and Key Laboratory of Soil and Water Conservation and Desertification Combating of the Ministry of Education, Beijing 100083, China;College of Soil and Water Conservation, Beijing Forestry University, and Key Laboratory of Soil and Water Conservation and Desertification Combating of the Ministry of Education, Beijing 100083, China;College of Soil and Water Conservation, Beijing Forestry University, and Key Laboratory of Soil and Water Conservation and Desertification Combating of the Ministry of Education, Beijing 100083, China |
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| Abstract: | This study was conducted to understand the influence of surface coverage on soil infiltration in the farming-grazing transitional zone by taking Yanchi County,Ningxia Hui Automous Region as an example. The sample line method was used for the survey of plantcoverage and infiltration measurements were carried outin sample plots. After field data were processed and analyzed,the effects of ground patterns on infiltra-tion were then examined. Results show thatplantgrowth can accelerate infiltration and plantcoverage is exponentially related to infiltration depth with a correlation coefficientof 0. 893. The withered materials can significantly preventwater infiltration and the two presenta logarithmic relation ata correlation coefficientof 0. 921. Bio-crustclearly impedes water infiltration and bio?crustcoverage is negatively correlated to infiltra? tion depth with a correlation coefficientof -0. 765. This implies thatbio?crustis mainly responsible for the thinning trend of soil water content. |
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| Keywords: | plant biocrust coverage infiltration |
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