基于GIS的内蒙古耕地时空变化研究

本文选取在内蒙古土地开发史上土地利用变化较快的时段,利用内蒙古８０年代初土地资源数据和中科院“八五”院重大应用项目《国家资源环境遥感宏观调查与动态研究》成果数据,分析了近１０年内蒙古耕地时空变化规律,探讨了耕对变化的原因,预测了内蒙古未来耕地的发展变化趋势。

STUDY ON TEMPORAL AND SPATIAL CHANGES OF CULTIVATED LAND USE IN INNER MONGOLIA BASED ON GIS

This paper approaches the temporal and spatial changes of cultivated land use in the Inner Mongolia Autonomous Region during recent 10 years based on GIS technology by using the data of land resources survey in inner Mongolia and the results of the "Remote Sensing Macroinvestigation and Dynamic Research on the National Resources and Environment" which was one of the major application programs in Chinese Academy of Sciences during the "Eighth Five-year Plan". The causes of change of the cultivated land use are analyzed. The results show that the total area under cultivation was enlarged for 7. 13% in Inner Mongolia from the beginning of 1980s to the beginning of 1990s. In which the cultivated area was universally enlarged in its eastern part but reduced in its middle and western parts. The distribution core of the cultivated land in the whole autonomous region has been shifted for 73. 37km northeastward, which brings about an obvious change of quality of the cultivated land environment. Along with population growth and economic development, it is estimated that the requring enlargement of cultivated area will be for 5. 4 % in 2010 than that in the beginning of 1990s, which will be possible in the inner Mongolia Autonomous Region according to the requirement-supply balance analysis of cultivated land.