基于3S技术的荒漠绿洲土地利用/土地覆被变化特征——以新疆巴里坤县为例

摘要

Based on Landsat TM image data in 1980,1994 and 2008,the 3S technology was used to map the land use types and determine the features of land use/land cover change of the Barkol Kazakhstan autonomous county in Xinjiang Province.This study showed that the of construction land,arable land and forest land areas increased and water area decreased in the Barkol Kazakhstan autonomous county during last 28 years;the grassland area firstly decreased from 1980 to 1994 and increased from 1994 to 2008,finally its area increased,and the unused land showed a opposite trend to grassland area.The comprehensively dynamic degree of land use during 1994-2008 was bigger than that during 1980-1994,implying that the transferable rate of land use types increased gradually.This study also proposed that the global warming and ecological engineering were the main drivers of land use/land cover change.%利用1980年土地覆盖数据,1994年和2008年两期Landsat TM遥感影像资料,采用3S技术研究了新疆巴里坤哈萨克自治县1980-2008年的土地利用/土地覆被变化的特征。结果表明,在过去的28年内巴里坤县居民及工矿用地、耕地和林地持续增加,水域持续减少,草地先减少后增加,整体增加,未利用地先增加后减少,整体减少。1994-2008年较1980-1994年的土地利用类型综合动态度增加,说明土地利用变化速度加快。气候变暖和各类生态工程是巴里坤土地利用/土地覆被变化的主要驱动因素。