| 东北典型黑土区土壤可蚀性K值研究 |
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| 引用本文： | 翟伟峰,许林书.东北典型黑土区土壤可蚀性K值研究[J].土壤通报,2011(5). |
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| 作者姓名： | 翟伟峰 许林书 |
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| 作者单位： | 东北师范大学城市与环境科学学院;齐齐哈尔大学理学院; |
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| 基金项目： | 国家重点基础研究发展计划(973)项目(2009CB426305)资助 |
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| 摘 要： | 土壤可蚀性因子K是表征土壤性质对侵蚀作用敏感程度的指标,对K值准确估算是构建土壤侵蚀模型的前提。研究以试验小区的野外观测资料和室内土壤理化性质分析数据为基础,运用通用土壤流失方程和诺谟公式分别实测和估算K值。结果显示,实测值均大于估算值,说明现有K值估算模型不能直接应用于东北典型黑土区。但分析发现实测值与估算值之间具有良好的线性相关,可建立回归方程,以此来修正诺谟公式。利用修正诺谟公式估算东北典型黑土区内不同地区及不同资料占有情况下的土壤可蚀性K值,并编制K值空间分布图。研究成果可以为东北典型黑土区土壤侵蚀模型构建及水土保持提供基础资料。
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| 关 键 词： | 土壤侵蚀模型 土壤可蚀性 K值估算 东北典型黑土区 |
Study on the Soil Erodibility K-Value in the Typical Black Region of Northeast China |
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| ZHAI Wei-feng ,XU Lin-shu.Study on the Soil Erodibility K-Value in the Typical Black Region of Northeast China[J].Chinese Journal of Soil Science,2011(5). |
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| Authors: | ZHAI Wei-feng XU Lin-shu |
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| Institution: | ZHAI Wei-feng 1,2,XU Lin-shu 1 (1.College of Urban and Environmental Sciences,Northeast Normal University,Changchun 130024,China,2.School of Sciences,Qiqihar University,Qiqihar 161006,China) |
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| Abstract: | Soil erodibility factor K is an index to indicate the sensitivity degree of soil erosion,and a precise K is the prerequisite for constructing soil erosion model.The coefficient of K was measured by employing Universal Soil Loss Equation and estimated by Nomogram Formula based on infield observation and laboratory analysis.Result showed that the measured coefficients were higher than those estimated,which implied that K estimated simply by present model couldn't directly be applied in typical black soil regi... |
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| Keywords: | Soil erosion model Soil erodibility K-values estimation Typical black soil region of Northeast China |
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