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浅析新构造运动对黄土高原水土流失的影响

THE EFFECT OF THE NEOTECTONIC MOVEMENT ON THE WATER LOSS AND SOIL EROSION IN THE LOESS PLATEAU
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摘要 该文论述了新构造运动对黄土高原水土流失的影响。认为新构造运动对黄土高原水土流失起着控制作用,主要表现为:(1)大范围的新构造运动导致黄土高原地区多暴雨,有利于地表土壤的侵蚀。(2)新构造运动抬升,导致地区侵蚀基准面下降,新构造运动上升与沉降文汇处的地形突变带、断裂活动带、地震破碎带,地表土岩体不稳定,地表降水大量下渗,为重力和流水侵蚀创造了条件.(3)新构造运动的形式、类型制约地形的发育演化,控制着水土流失的方向。 The paper studies that the effect of the neotectonic movement on the water lossand soil Erosion in the Loess Plateau.The paper’s authors think the neotectonic movementhave a tremendous effect on the water loss and soil erosion,mainly as the following:(1)Large-scale elevation of neotetonic movement leads to freguent rain storms in theLoess Plteau,the rainfall carries away the surface soil to a greater extent.(2)The elevation of the neotectonic movement leads fo the deepening of erosion basis,the sudden terrain change,ative fracture belt,broken belt of earthquake ect,between eleva-tion and descent of the neotectonic movement is important element that causes water loss andsoil erosion.(3) The development of the patterns of the neotectonic movement decides he develop-ment the water loss and soil erosion.
机构地区 宁夏大学地理系
出处 《宁夏大学学报(自然科学版)》 CAS 1995年第3期79-84,共6页 Journal of Ningxia University(Natural Science Edition)
关键词 新构造运动 黄土高原 水土流失 控制作用 neotectonic movement,the loess plateau,water loss and soil erosion,tremen-dous effect
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