武威市黄花滩生态移民区近十几年来土地利用变化监测

Monitoring on Land Use Changes in Huanghuatan Ecologgical Immigrant Region in Recent 10 Years

武威市黄花滩生态移民区经过近10年的规划建设,目前土地利用情况已基本稳定。从移民前的1987年到基本稳定的2003年,其变化主要是:土质戈壁和戈壁分别比1987年减少了1 883.78 hm2、1 965.90 hm2,沙化土地面积共计减少了1 379.43 hm2,其中流沙减少了1 157.74 hm2,这部分减少的面积多被开垦为耕地、配套建设为林地,耕地和林地分别比1987年增加了3 837.47 hm2、1 173.39 hm2。目前移民区建设已趋于稳定,沙漠化防治成效显著,但在沙漠腹地开垦的水浇地其防护林和防风固沙林建设尚未成型,是该区域目前存在的最大问题。

The land use changes in Huanghuatan ecological immigrant region now become stable after 10 years planning and construction recently. From 1987 to 2003, the major changes of land use in this region are：The soil Gobi and the gravel Gobi decreased 1 883.78 hm^2 and 1965.90 hm^2, the desertifieation land decreased 1 379.43 hm^2. The decreased area has been changed into farmland and woodland. The farmland and woodland increased 3 837.47 hm^2 and 1 173.39 hm^2. It is a major problem that some protection forest and windbreak forest for irrigadon farmland reclaimed in desert interior has not been established in the region.