大沟头小流域不同土地利用格局下土壤侵蚀情景模拟研究  

Study on Dynamic of Land Use Pattern in Dagoutou Watershed

作　　者：杨翠林[1] 秦富仓[2] 

机构地区：[1]鄂尔多斯市准格尔旗水土保持局,内蒙古鄂尔多斯010300 [2]内蒙古农业大学,呼和浩特010019

出　　处：《水土保持研究》2010年第4期82-86,共5页Research of Soil and Water Conservation

基　　金：国家自然科学基金(40561009)

摘　　要：为了分析大沟头流域景观格局动态变化(时间序列的影响)对流域土壤侵蚀景观格局的影响,本研究建立了几个流域景观格局特定情景(Scenario),通过在Arcview中利用模型模拟,得出大沟头流域内林草地面积比从0～100%,土壤侵蚀量从情景1的47262.06t减少为情景5的12744.70t,减少量为34517.36t,减少率高达为73.03%;林草地面积不变的情况下,随着流域内梯田的从无到有、从少到多,情景8(梯田占70%)与情景4(无梯田)相比,土壤侵蚀量减少了7524.92t,减少了28.94%。In order to analyze the influence of the landscape structure dynamic,we had set scenery model.The situation of the change of the soil erosion in different watershed landscape structures was analyzed.The results showed that the area of woodland and grassland in Dagoutou watershed proportion increased from 0to 100%,soil erosion of scenario 1more than scenario 5is 34 517.36t,reduced rate for up to 73.03%.Under circumstances the area of woodland is unchanged,the area of terrace in Dagoutou watershed increased,Comparison Scenario 8and Scenario 4,the amount of soil erosion reduction was about 7 524.92t,rate of decrease is 28.94%.

关 键 词：土地利用 土壤侵蚀 景观格局 大沟头流域 

分 类 号：S157[农业科学—土壤学] F301.24[农业科学—农业基础科学]