摘要
通过GIS技术,以及1990、2000年与2010年塔里木河干流Landsat-TM影像数据和中巴资源卫星数据,分析了研究区近20 a土地利用/覆被变化。结果表明:1990—2010年,研究区主要土地利用类型为沙地、疏林地和低覆盖草地,占总面积的70%以上;研究期间,变化最显著的是耕地面积,年均变化率为9.03%。变化最不明显的是未利用地,年均变化率为-0.013%;新增耕地面积主要来自于9.09%的林地面积和14.80%的草地面积。新增水域面积则主要来自于的1.28%沙地;新增建设用地面积主要来自于0.89%的耕地面积。研究结果为塔里木河干流水土资源可持续利用及生态环境保护提供了一定的参考。
By application of GIS technology and in accordance with the Iandset-TM image data of the main stream of the Tarim River in 1990, 2000 and 2010, and data from Sino-Pakistan resource satellite, the land utilization and the vegetation variation in the study region in last 20 years are analyzed. The study presents that in the study region in 1990---2010, the land utilized was mainly sand land, sparse-forest land and lower-coverage grass land, which account for over 70% the total area of the study region. In the studied years, the farmland area changed obviously, the average annual change rate was 9.03%. The land most unchanged is the one not utilized, its average change rate is -0. 013%. The newly increased farmland area were mainly from 9.09% the forest land area and 14.80% the grass land area. The newly in- creased water field area was from 1.28% the sand land. The increased land area for construction was from 0.89% the farmland area. The study provides the sustainable application of water ＆ soil resources and the ecological ＆ environmental protection of the main stream of the Tarim River with reference.
作者
魏光辉
WEI Guanghui(Xinjiang Tarim River Catchment Administration, Korla, Xinjiang 841000, China)
出处
《西北水电》
2017年第3期15-21,共7页
Northwest Hydropower
基金
水利部公益性行业科研专项经费资助(课题编号:201501059)
关键词
遥感
土地利用
土地覆被
塔里木河干流
remote sense
land utilization
land vegetation
main stream of Tarim River
