黄河中游地区重力侵蚀影响因素分析  

Analysis on Affecting Factors of Gravity Erosion of the Middle Yellow River Region

作　　者：薛海[1] 王文成[2] 何沛华[2] 

机构地区：[1]黄河勘测规划设计有限公司博士后工作站 [2]黄河勘测规划设计有限公司环境与移民工程院水土保持中心,河南郑州450003

出　　处：《人民黄河》2008年第5期60-62,共3页Yellow River

基　　金：水利部黄河泥沙重点实验室2007年度开放课题基金资助项目(2007003);中国博士后科学基金资助项目(20070410253)

摘　　要：重力侵蚀因其机理的复杂性及较强的随机性而成为土壤侵蚀研究领域的难点之一。其机理复杂的根本原因在于重力侵蚀影响因素众多且大多以非线性方式叠加。通过对黄河中游重力侵蚀主要影响因素的分析,讨论了在建立重力侵蚀计算模型过程中相应因素的适当处理方式,应充分考虑外因在黄河中游各分区的差异性,并通过理论推演或实验数据将外因与沟坡力学参数的变化联系起来,从而构建基于力学机理且能反映研究区域分异性的重力侵蚀计算模型。The study on gravity erosion has become one of difficulties in the domain of soil erosion because of its complexity and randomicity.The essential reason of complexity of mechanism is numerous affecting factors for gravity erosion and majority of them are superimposed in the nonlinear way.It discusses a proper processing way of relevant factors during establishing a calculation model of gravity erosion through the analysis of main affecting factor of gravity erosion occurred in the middle Yellow River region,fully considers the external cause to the difference of each sub-region of the middle Yellow River and combines the external cause with mechanics parameters of gullies and slopes through theoretical calculation or testing data for establishing a gravity erosion calculation model based on mechanics mechanism and that can reflect the differentiation of the studied region.

关 键 词：重力侵蚀 影响因素 黄河中游地区 

分 类 号：S157[农业科学—土壤学]