应用遥感技术调查内蒙古土壤侵蚀现状成果概要

内蒙古自治区是我国北方地区土壤侵蚀严重的省区之一。研究和查清全区土壤侵蚀现状,是水土保持一项重要的基础工作。本文简要地介绍了应用遥感技术调查内蒙古土壤侵蚀现状所取得的成果:全区土壤侵蚀面积为115万多平方公里。其中,水蚀面积占23.6％,风蚀面积占64.6％,冻融侵蚀面积占11.8％;Ⅱ级以上三种类型的侵蚀面积占74.05％。文章阐明了各类各级土壤侵蚀的分布特征,按流域和行政区对区内的土壤侵蚀进行了评价,提出了土壤侵蚀区划及防治区划成果。

Investigation of the Present Status of Soil Erosion Condition with Remote Sen-sing Technology in Inner Mongolia Autonomous Region

The Inner Mongolia Autonomous Region is one of the serious soil erosion areas in North China. Investigation of the present status of soil erosion condition in the whole area is an important basic work of soil conservation. The author concisely introduces the resu Its of applying remote sensing technology to investigate the present soil erosion situation in Inner Mongolia Autonomous Region, the results show that the total erosion area ac-counts to 1.15 million km~2, in which, 23.6% subject to water erosion, 64.6% to wind erosion and 11.8% to erosion due to freezing and thawing. The erosion area of three erosion patterns above class Ⅱ is 74.05% of the total. The author also relates the distributive traits of every erosion class and evaluates soil erosion according to watersheds and administritive districts. Divisions of soil erosion and prevention measures were worked out.