甘肃民勤邓马营湖滩地地质环境条件分析

甘肃民勤邓马营湖滩地是腾格里沙漠西部湖积盆地的一部分,区域上受河西系构造所控制,第四系厚度150 m,是地下水赋存的天然场所,主要由半固定、固定沙丘和湖积平原构成,第四纪地质环境脆弱,人类现已开始开垦和加大湖滩区的农牧业开发力度.如何维持沙漠区人工绿洲生态平衡,合理开采利用地下水,防止土壤盐渍化和风沙覆没,控制和改善局部地段已出现的恶化环境,分析地质环境特征,是论述的重要内容.

ANALYSIS OF THE CHARACTERISTIC OF THE MINERAL SURROUNDINGS IN DENGMAYING LAKEBEACH OF MINGIN COUNTY, GANSU

Dengmaying Lakebeach area is a part of the lake deposit basim in the west of Tenggeli desert. Part of the Lakebeach is controlled by the structure of Hexi series. The fourth series is 150m deep, which is the natural spot for reserving the underground water, and is also a very important component part for maintaining the natural environment and ecological balance. The Lakebeach is mainly made up of semi-stationary and stationary dunes and lake deposit plain. The mineral surroundings of the fourth era is fragile. And human beings begin to cultivate th e lakebeach and develop the farming and animal husbandry carefully. The main contents that the paper discusses are: the ways of maintaining the ecological balance of artificial oasis in desert areas ; exploiting and using the under ground water reasonably; preventing the salinization of soil and the overwhelming the wind and sand ; controling and improving the worsened environment which occured in some areas and analysing the characteristic of the mineral surroundings.