淳化县泥河沟流域土壤侵蚀现状分析

本文从泥河沟流域的土壤侵蚀现状入手,分析了该流域的土壤侵蚀方式及分布规律,以及流域的主要产沙部位和土壤侵蚀的成因。认为,该流域的土壤侵蚀方式具有明显的垂直分布规律,人类活动可以改变土壤侵蚀方式的分布;原面的中上部和沟谷中上游黄土裸露陡坡是该流域的主要产沙区;其土壤侵蚀主要是降雨因素,地形因素,土地利用因素和人类活动造成的。并提高相应的治理建议。

THE ANALYSIS OF THE EXISTING SOIL EROSION N NIHEGOU WATERSHED IN CHUNHUA COUNTY SHAANXI PR OVINCE

The present paper analysis the pattern the distribution rules and causes of soil erosion as well as the location of silt or sediment produced and developed in Nihegou watershed, Chunhua County, Shaanxi Province by the actual cirumstances. It is considered that the patterns of soil erosion not only show a vertical distribution rule but also a geographical distribution one. The gullies and the steeper slopes with loess exposed on the upper and m ddle parts of the Yuan Surface seem the main pla ces where sediment appeared. The soil erosion in the area was chiefly caused by a series of factors, such as rainfall, topography the farms of land using, the human activities, etc. At last, the corresponding measures to control and prevent the soil erosion there are proposed.