基于GIS的伊犁河谷2000-2010年土地利用的动态变化

在遥感和GIS技术的支持下,运用图像分类、叠加和空间分析等方法,对伊犁河谷2000-2010年10年土地利用变化进行分析研究.结果表明,①2000-2010年10年间,伊犁河谷耕地面积和城乡、工矿、居民用地面积不断增加,草地和未利用地不断减少,各类用地变化区域主要沿伊犁河谷分布;②2000-2005年5年间伊犁河谷土地利用动态变化较大,变化区域占土地总面积的1.36%,其中变化最大的为耕地,其次是草地和未利用地的转化,变化区域位于伊犁河与特克斯河交汇的新源县卡拉布拉乡;③2005-2010年5年间土地利用变化较2000-2005年5年小,变化区域占总面积的0.41%,其中变化最大的是耕地,其次为草地和未利用地,主要变化区域位于特克斯河沿岸及伊犁河上游.2000-2010年10年土地利用由0.2436%下降到0.0374%,变化趋势趋于平缓.

Dynamic Change of Land Use in Yili River Valley in 2000-2010 Based on GIS

With the support of remote sensing and GIS technology, using image classification,superposition and spatial analy-sis,the change of land use in Yili river valley in 2000-201010a was analyzed and reseached. The results showed that ①from 2000 to 2010 the cultivated area and urban and rural,industrial and mining,residential land area was increasing. Grass-land and unused land were declining. ②The change of land use in the Yili river valley during the five years from 2000 to 2005 accounted for 1.36% of the total land area, among which the most change was cultivated land,followed by grassland and unused transformation, and the change area was located at the intersection of Yili river and Tekes river. ③The land use change from 2005 to 2010 was less than 5 a from 2000 to 2005,the change area accounted for 0.41% of the total area,the largest change was cultivated land,followed by grassland and unused land,the main change area was located in the Tekes riv-er and Yili river. The trend of land use decreased from 0.2436% to 0.0374% in the 10 a period from 2000 to 2010,and the trend leveled off.