阴山北麓农牧交错带土壤侵蚀驱动机制研究  

Drive-Mechanism of Land Erosion in the Cross Region Between Farmland and Grassland in Yinshan Mountain

作　　者：朱丽[1] 秦富仓[1] 杨翠林[1] 马小芳[1] 

机构地区：[1]内蒙古农业大学生态环境学院

出　　处：《水土保持研究》2008年第5期34-37,共4页Research of Soil and Water Conservation

基　　金：国家自然科学基金(40561009)

摘　　要：阴山北麓农牧交错带是我国北方生态建设的重要防线。近年来由于人口迅速增加,经济相对贫困,不合理的土地利用,导致土地急剧退化,土壤侵蚀严重。研究区水土流失的主要特点是风蚀与水蚀共存,最大风蚀模数达9 985t/(km2·a),最大水蚀模数为3 000 t/(km2·a),复合侵蚀量非常大,水土流失面积占土地总面积的89.8%。针对这样的情况,对当地土壤侵蚀过程进行了阐述,分析了导致土壤侵蚀的自然因素和人为因素,发现这两个因素在时间和空间上具有藕合性,揭示出二者相互影响、相互促进、协同加剧的规律,为当地土壤侵蚀治理提供思路。The ecetone between agriculture and animal husbandry in northern region of Yinshan Mountains is an important line of the ecosystem constructing in the north of China.Recently,due to the sharply increasing of population,economic poverty and absurd land using,land degenerated speedy and eroded severity.The main character of the study area is the coexistence of wind erosion and water erosion.The maximum wind erosion modulus is 9 985 t/（km^2·a）,the maximum water erosion modulus is 3 000 t/（km^2·a）,the composite erosion amount is very large,the percentage of soil and water loss area is 89.8%.According to this situation,this paper described the process of land erodesion,analyzed the reasons of nature factor and man-made factor,discovered that coupling existed between the two factors in time and space,exposed the law of interaction,mutual promotion and cooperative aggravation between the two factors,provided ideas for the soil erosion harness in this area.

关 键 词：土壤侵蚀 阴山北麓 农牧交错带 驱动机制 

分 类 号：S157.1[农业科学—土壤学]