基于MODIS数据的内蒙古土地利用/覆被变化研究

Analysis of land use/cover change in Inner Mongolia using Modis data

利用MOD12Q1数据和GIS技术,对内蒙古21世纪以来土地利用/覆被变化特征及其成因进行研究。结果表明:研究时段内内蒙古各土地利用/覆被类型发生变化的地区只占全区总面积的12.8%;发生土地利用变化的区域表现出结构变化复杂和空间分异明显的特点;土地利用变化没有给全区生态环境质量带来全局性负面效应;全区土地利用率略低于全国平均水平,土地利用综合程度显著低于全国平均水平;社会经济发展需求、区域生态保护和建设以及气候变化是影响全区土地利用结构和格局的三个重要因素,一些草场管理政策和措施的实施,也对局部地区和特定类型的土地利用变化产生影响。

Based on remote sensing and GIS technology,we used MOD12Q1 data to research the land use / cover changes and causes of Inner Mongolia in the 21 st century. The results indicate that the proportion of the area that land use / cover changed was only 12. 8% and the region exhibited complex structural changes and the obviously spatial differentiation. Besides,land use change didn＇t bring total negative effects to regional ecological quality.Even though Inner Mongolia has accelerated the urbanization process,the integrated extent of land use was far below the national average. Socioeconomic development needs,regional ecological protection and construction,climate changes were three important factors that affected the land use structure and pattern,in addition,some pasture management policies and measures also had impact on the land use change of local areas and certain types.