黑河下游额济纳绿洲退化规律及其控制因素

Degradation and controlling factors of the Ejina Oasis in the downstream Heihe River

本文针对黑河下游的额济纳绿洲,借助遥感方法利用气象卫星数据定量确定了绿洲的多年动态变化规律,通过地下水数值模拟得到地下水水位埋深分布,提出植被覆盖率的概念较好地描述了植被生长状况与地下水位埋深的定量关系,最终给出了能从宏观上研究干旱区绿洲和水资源定量关系的实用方法。

This paper deals with degradation and controlling factors River. The degradation of the oasis in the past years is monitored by depth to groundwater levels is simulated by groundwater flow of the Ejina Oasis in downstream Heihe using meteorological satellite images. The modeling technology. The vegetation coverage rate is proposed to describe the relationship between the groundwater depth and the vegetation state. Finally, an applied method is provided to study the quantitative relationship between an arid oasis and water resources on a regional scale.