| 黄土区侵蚀对土壤内在性质的影响 |
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| 引用本文： | 李光录 吴发启. 黄土区侵蚀对土壤内在性质的影响[J]. 干旱区资源与环境, 1997, 11(1): 45-52 |
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| 作者姓名： | 李光录 吴发启 |
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| 作者单位： | 西北林学院水土保持系 |
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| 摘 要： | 通过野外调查、定位监测及室内分析方法，研究了黄土区侵蚀对土壤内在性质的影响。结果表明：土壤中＜０．０１ｍｍ颗粒流失是造成耕地土壤“粗化”、结构恶化和养分降低的主要原因；耕地土壤结构的破坏程度随坡度、侵蚀强度增大而增大，养分流失总量随坡度增大呈幂函数增大，养分减少以氮素最快。
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| 关 键 词： | 土壤侵蚀 土壤结构 养分流失 坡耕地 |
THE EFFECT OF EROSION ON SOIL PROPERTIES ON THE LOESS PLATEAU AREA |
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| Li Guanglu Wu Faqi Liu Bingzheng Zhang Xiaonl. THE EFFECT OF EROSION ON SOIL PROPERTIES ON THE LOESS PLATEAU AREA[J]. Journal of Arid Land Resources and Environment, 1997, 11(1): 45-52 |
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| Authors: | Li Guanglu Wu Faqi Liu Bingzheng Zhang Xiaonl |
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| Abstract: | Based on field survey,plot experiment and laboratory analysis,the effect of erosion on soil properties are studied.The results show that the loss of particles less than 0.01mm in soil is the main factor which leads soil coarseness,soil structure deterioration and nutrients loss.The rate of soil structure deterioration increaces with slope gradient and erosion intensity;The total quantity of lost nutrients is correlated with the raise of slope gradient in power function.Nitrogen declines more quickly than other nutrients. |
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| Keywords: | Soil erosion soil stucture nutrients loss cultivated slope land. |
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