干旱区生态环境知识资源中心(Arid): 石羊河流域环境现状及其演化趋势分析

Arid

	石羊河流域环境现状及其演化趋势分析
其他题名	Current Situation of the Environment in Shiyang River Basin and Its Evolutionary Trends
	王琪 1; 史基安 1; 张中宁 1; 孟自芳 2
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2003
卷号	23 期号:1 页码:46-52
中文摘要	石羊河流域下游地区蒸发强度大、地下水循环速度慢，加之近年来地表水供给量的严重不足，过度开采地下水已引发了区域性地下水位下降、植被退化、盐渍化、沙漠化等一系列生态环境问题的不断恶化。地下水位的下降与矿化度的增高存在着明显的正相关性，特别是流域下游地区地下水矿化度的增高趋势明显。根据影响地下水动态的主要影响因素可将石羊河流域地下水的动态类型划分为蒸发型、开采型、径流开采型、渗入型和蒸发开采型5种，在此基础上，结合多年地下水位和水质变化的实测资料，对石羊河流域地下水下降趋势和亏空状况进行模拟分析，表明该区近40a来地下水位持续下降，亏空量不断增加，并且具有明显的加速趋势。1960年武威和民勤盆地地下水亏空量为1.7410^8m^3，1998年已达4.5210^8m^3，如不采取有力措施加以治理，预计2010年将达到6.7*10^8m^3，这将对该区生态环境产生严重的影响。
英文摘要	Due to the strong evaporation and slow circulation rate of the groundwater, together with serious shortage of the surface water supply and overuse of the groundwater resources in recent years in the lower reach of Shiyang river basin, the environment here has suffered from a series of eco-environmental problems such as the lowering groundwater table, vegetable degeneracy, land salinization and desertification, etc. If no effective measures are taken, the deterioration of the eco-environment of this vast area will be unavoidable. There is an eminent positive correlation between the lowering of the groundwater table and the increasing water mineralization, especially in the lower reach area, the increasing tendency of groundwater mineralization is extremely clear. According to the main controls on groundwater dynamic status, the dynamic types of the groundwater in Shiyang river basin can be classified into five types, that is, evaporation type, exploitation type, runoff-exploitation type, infiltration type and evaporation-exploitation type. Based on these studies and in combination with the measured data on groundwater table and water quality in Shiyang River over a long term, the lowering trends and shortage status of the groundwater in the study area have been simulated. As a result of simulation, it can be seen that the groundwater table is continuously lowering in nearly forty years and the shortage of groundwater is steadily rising, which also shows an accelerating tendency in recent years. In 1960, the groundwater shortage of Wuwei and Minqing basins was 1. 74 * 10~8 m~3 , and this figure reached 4. 52 * 10~8 m~3 in 1998. If such a situation continues, it is predicted that this figure will be up to 6. 7 * 10~8 m~3 in 2010, implying that the eco-environment here will be influenced seriously.
中文关键词	石羊河流域 ; 地下水位 ; 地下水亏空状况 ; 水质 ; 盐渍化 ; 生态环境
英文关键词	shiyang river basin dynamic types of groundwater lowering of groundwater table shortage situation of groundwater simulation analysis
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MINERALOGY
WOS研究方向	Mineralogy
CSCD记录号	CSCD:1281544
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/204624
作者单位	1.中科院兰州地质所, 兰州地质研究所气体地球化学国家重点实验室, 兰州, 甘肃 730000, 中国; 2.中科院兰州地质所, 兰州地质研究所气体地球化学国家重点实验, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	王琪,史基安,张中宁,等. 石羊河流域环境现状及其演化趋势分析[J],2003,23(1):46-52.
APA	王琪,史基安,张中宁,&孟自芳.(2003).石羊河流域环境现状及其演化趋势分析.中国沙漠,23(1),46-52.
MLA	王琪,et al."石羊河流域环境现状及其演化趋势分析".中国沙漠 23.1(2003):46-52.