水土保持研究2017，Vol.24Issue(6)：1-5,5.
喀斯特山区土地利用变化与土壤侵蚀耦合关系研究——以毕节试验区为例
Relationship Between Land Use and Soil Erosion in Karst Area——A Case Study of Bijie Experimental Area
摘要
Abstract
The process of land use/cover change and soil erosion change in Bijie experimental area from 1990 to 2010 was simulated by analyzing the data of land use type,gradient and vegetation index based on RS and GIS.Then,through overlay analysis and transfer matrix analysis,the response characteristic of soil erosion during changing process of land utilization was analyzed.The relationship between land use change and soil erosion change was revealed finally.The results showed that:(1) the areas of forestland,cultivated land and grassland in Bijie experimental area were the largest,the area of cultivated land was decreasing gradually,the areas of forestland and building land were increasing gradually;(2) the main types of soil erosion were mild and moderate erosion,the degree of soil erosion was controlled to a better level over the past twenty years,especially after the implementation of Grain for Green Project;(3) the land use change process was closely associated with soil erosion;cultivated land was main land type for the occurrence of soil erosion,the decreased area of cultivated land was positively associated with soil erosion area;the change in area of forestland was interrelated to the soil erosion,while at the beginning of the Grain for Green Project,the intensity of soil erosion slightly increased;the increased area of grassland was negatively correlated to the soil erosion area;increase in grassland area is favorable for strengthening anti-erosion ability of the soil.The results of this research are helpful for rational configuration of land resources and ecological protection in karst area and also provide the decision-making support for organization such as land use planning bureau or water resources bureau.关键词
土地利用变化/土壤侵蚀/叠置分析/转移矩阵/毕节试验区Key words
land use/cover change/soil erosion/overlay analysis/transfer matrix/Bijie experimental area分类
农业科技引用本文复制引用
谢颖颖,邵争,兰小机,李付伟,曾凡华..喀斯特山区土地利用变化与土壤侵蚀耦合关系研究——以毕节试验区为例[J].水土保持研究,2017,24(6):1-5,5.基金项目
国家自然科学基金(41561085,40971234) （41561085,40971234）
毕节市社会发展科技攻关计划项目(毕科合字[2012]48) （毕科合字[2012]48）
