利用遥感方法分析鄂尔多斯盆地植被与降水的依赖关系

Analyzing dependent relationship between vegetation and rainfall in Erdos Basin by remote sensing

鄂尔多斯盆地是典型的干旱半干旱地区,生态环境脆弱,人类社会发展对当地自然环境的改变引发了系统生态环境问题。以鄂尔多斯盆地为研究范围,利用遥感和GIS相结合的手段采用三种方法确定鄂尔多斯盆地内植被对降水依赖性的空间分布,得出地带性植被占全区总面积的35%左右,主要集中在盆地内中北部地区;非地带性植被占全区总面积的30%左右,主要分布在南部地区、银川平原和河套平原附近地区。

Erdos Basin is situated in typical arid and semi-arid region with fragile ecological environment. De- velopment of human society has resulted in change of local natural environment that leads to serious ecological and environmental problems. The study analyzes spatial distribution of dependent relationship between vegetation and precipitation in Erdos Basin by using GIS and RS. The result shows that, the zonal vegetation accounts for 35% of total, mainly in the middle and northern parts of the basin. The non-zonal vegetation accounts for about 30% of total, mainly in the southern part, Yinchuan Plain and surrounding areas near the Hetao Plain.