内蒙古多伦县土地利用动态变化及驱动力

Land use change dynamics and driving forces in Duolun County,Inner Mongolia

基于ERDAS9.0和ARCGIS10.0软件,选取土地利用动态度、土地利用程度模型以及土地利用转移矩阵对多伦县2004-2014年土地利用变化及其驱动力进行分析。结果表明:2004-2014年10a间,多伦县林地和建设用地增加,草地、耕地、水域和未利用地减少,但草地始终占据优势地位,土地利用效率不断提高。究其原因,人口、经济和政策因素是建设用地增加、未利用地和耕地减少的主要原因;干旱化加剧则导致水域面积有所减少。

Based on the ERDAS9. 0 and ARCGIS10. 0 software,the land use dynamic degree model,land use degree model,as well as the transfer matrix of land use in Duolun were used to analyze the land use change and its driving forces from 2004 to 2014 in Duolun. The results show that the woodland and construction land gradually increased,grassland,farmland,water area and unused land gradually reduced. But the grassland always occupied the dominant position. Woodland mainly transferred from grassland,farmland and unused land during 2004 to 2014.However,the unused land was mainly converted to grassland and woodland. The land using in Duolun is in developing period,but the efficiency of land use inceases gradually. The reason is that the development of population and economy was the main reason for the construction land area increasing and the unused land and the farmland area decreasing. However,the drought intensifying was the main factor to reduce the water area,and the policy factor was the main driving force for the conversion of farmland,grassland,woodland and unused land.