干旱区生态环境知识资源中心(Arid): 甘肃省民勤盆地地下水环境变化及原因探讨

Arid

	甘肃省民勤盆地地下水环境变化及原因探讨
其他题名	Study on the Change of the Groundwater Environment and Its Causes in the Minqin Basin, Gansu Province
	赵华; 马金珠; 朱高峰; 李相虎
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2004
卷号	21 期号:3 页码:210-214
中文摘要	民勤盆地地下水化学特征具有明显的水平与垂直分带特征,沿水流方向,自西南的SO42--Na+-Mg2+型逐渐过渡为Cl--SO42--Na+型,湖区浅层水则完全为Cl--Na+型水.垂直向上表现为上咸下淡的趋势.随着进入盆地地表水量的减少与地下水开采量逐年增大,地下水环境日益恶化,咸水入侵深度达60 m,TDS普遍增高.特别是湖区局部浅层地下水矿化度,由20世纪70年代的3 g/L发展到现在的16 g/L.据此,增加淡水资源和减少地下水的超采量,发展节水高效农业是保护该盆地地下水环境的最基本措施.
英文摘要	The total area of the Minqin Basin is 1. 6 X 104 km2, but the area of the oasis occupies 9% only and is gradually reduced due to the shortage of water resources. Along with the population growth and the economic development, groundwater in the basin is excessively pumped, thus the groundwater quality is seriously deteriorated. In this paper, the change of the groundwater environment and its causes in the basin are researched, The results show that the chemical properties of groundwater in the Minqin Basin are obviously characterized by the horizontal and vertical zonal distribution. Along the direction of stream flow, the groundwater changes gradually from the SO42~ - Na+ - Mg2* pattern in the south to the Cl~ - SO42~ - Na+ pattern, and the shallow groundwater in the dried-up Qingtu Lake area becomes completely the Cl-Na pattern. Vertically, the shallow groundwater is salty and the deep groundwater is fresh. Along with the sharp reduction of surface water and the seriously excessive pumping of groundwater, the groundwater environment is seriously deteriorated, and the infiltration depth of salty water is down to 60 m. Especially, the mineralization of shallow groundwater in the dried-up Qingtu Lake area is increased from 3 g/L in the 1970 ’s to 16 g/L at present. Therefore, it is the radical measure for conserving the groundwater environment in the basin to increase the surface water resources, reduce the volume of pumped groundwater, and develop the water-saving agriculture.
中文关键词	地下水 ; 变化 ; 民勤盆地 ; 甘肃省
英文关键词	TDS groundwater TDS mineralization Minqin Basin
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:1591127
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205068
作者单位	兰州大学, 西部环境教育部重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	赵华,马金珠,朱高峰,等. 甘肃省民勤盆地地下水环境变化及原因探讨[J]. 兰州大学,2004,21(3):210-214.
APA	赵华,马金珠,朱高峰,&李相虎.(2004).甘肃省民勤盆地地下水环境变化及原因探讨.干旱区研究,21(3),210-214.
MLA	赵华,et al."甘肃省民勤盆地地下水环境变化及原因探讨".干旱区研究 21.3(2004):210-214.