【摘要】 甘肃省民勤县地处巴丹吉林沙漠和腾格里沙漠融合处,为典型的大陆性干旱气候。由于入境水量减少和人工过量开采地下水,致使地下水位下降,水的矿化度增高,水质恶化,沙漠化、盐渍化加剧,绿洲面积逐年减少,严重影响生产发展和人类的生存。本文分析了绿洲沙漠化、盐渍化的成因,认为不合理的人类活动是导致植被枯死、沙漠化蔓延发展的重要原因之一。针对这种情况,作者提出了四治理沙漠化、盐渍化的途径:开发利用东北部沙漠区地下水;南水北调;调整机井布局;节约用水,革新灌溉方法。更多还原

【Abstract】 Minqing County, Gansu Province, located on the spot between Badanjilin and Tenggeli deserts,subjected to a typical continental arid climate. Decreasing supply and high rate of pu mpping have resulted in lowering of table, rising of mineralization and quality deteriorationof ground water, which,in turn, in accelerated desertification and salinization and reduce of oasis area. It is pointed out in this paper that treasonable human activities are one of the main causes of desertification and salinization.Four ways for controlling those process are suggested: utilization of ground water in northeast part of the desert,transfer of water from the south rivers,adjustment of layout of pumpwells and improvement of irrigation methods to save water.更多还原