干旱区生态环境知识资源中心(Arid): 新疆三工河流域绿洲地下水水质空间变异特征分析

Arid

	新疆三工河流域绿洲地下水水质空间变异特征分析
其他题名	Characteristics of Spatial Variations in Groundwater Quality of Arid Oases over the Sangong River Basin in Xinjiang, China
	闫金凤 1; 郭全军 2; 陈曦3 ; 周可法 3
ISSN	1007-7588
出版年	2009
卷号	31 期号:10 页码:1710-1716
中文摘要	本文以新疆三工河流域绿洲为研究区域,覆盖全流域选取了77个样点进行实地采样及地下水水质化验分析,运用GIS的地统计分析方法对水质数据进行半变异函数模型分析,揭示了干旱区绿洲地下水水质空间变异性特征.研究结果表明,整个绿洲地下水矿化度、Cl~-离子、HCO_3~-离子和硫酸盐具有中等的空间相关性,硝酸盐具有较强的空间相关性;冲洪积扇绿洲地下水化学特征以NO_3~--SO_4~(2-)-Ca-Mg型为主,矿化度通常<800mg/l,地下水硝酸盐含量较高,局部地区已造成了地下水硝酸盐污染;冲积平原绿洲地下水化学特征以SO_4~(2-)-CL~--HCO_3~--Ca-Na-K-Mg型为主,矿化度通常>1000mg/l,局部地区矿化度含量较高,主要以硫酸盐、氯化物为主.
英文摘要	Development and evolution of oases in arid areas rely largely on groundwater resources.The unbalanced relationship between water resources and land use is an essential reason for oasis desertification and vegetation degeneration over arid areas.The heterogeneity in spatial distribution of water resources is one of primary constraints affecting long-term exploitation and utilization of water and land resources for arid areas.The characteristics of spatial variations in groundwater quality and the situation of land use/cover changes in the oases of the Sangong River basin,Xinjiang,were examined by means of remote sensing and GIS techniques and associated geostatistical methods.Measurements of groundwater quality from 77 wells over the study area and Landsat ETM+ imagery in 2004 were utilized.Results indicated that there exist a kind of moderate spatial correlation between mineralization,Cl_-,HCO_(3~-),and SO_4~(2-)ion,and a high degree of spatial correlation between mineralization,Cl_-,HCO_(3~-),and nitrate content in groundwater.The spatial heterogeneity in nitrate content in groundwater was mainly caused by the spatial structure and its composition,such as terrain,landforms,hydrological conditions and soil.Soil structure and hydrological processes were generally changed by land use/cover changes and human activities,like urban construction,agricultural reclamation,cropping pattern,irrigation and drainage density,which significantly affected the spatial variations in nitrate content in groundwater.The hydrochemical characteristics in alluvial-diluvial fans in the upper reaches of the river were predominantly represented by NO_(3-)~-SO_4~(2-)-Ca-Mg,with showing the mineralization of groundwater generally lower than 800 mg/l.The areas with high nitrate content in groundwater,like farmland,land for construction,industry and mining,have been undergoing a long period of land resource exploitation and utilization.The hydrochemical type was SO_4~(2-)-CL~--HCO_3--Ca-Na-K-Mg over the alluvial plain in the lower reaches of the river,with showing the mineralization of groundwater usually higher than 1000 mg/l.The groundwater quality in some regions have become more and more deteriorative,which was closely related to over-exploitation of land resources,irrigation and drainage activities,increasing surface evaporation and the use of chemical fertilization.Groundwater in the alluvial-diluvial fans in the upper reaches of the river,where old oases had been developed,was significantly polluted by nitrate due to urban sprawl and long-term cultivation.The pollution sources were mainly from the applications and utilizations of agricultural chemicals,sewage irrigation,drainage of urban waste water and domestic sewage.Newly reclaimed farmland prevails over the alluvial plain in the lower reaches of the river;however,groundwater in the plain would be probably polluted by nitrate if irrational exploitation of land and water resources continued.Irrational human interferes and over-exploitation of land and water resources should be restricted so that groundwater quality and oasis environments can be protected and improved timely and sustainable development over the Sangong River basin can be ultimately realized.
中文关键词	干旱区绿洲 ; 地下水水质 ; 空间变异性 ; 新疆三工河流域
英文关键词	Arid oasis Groundwater quality Spatial variation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:3708372
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224646
作者单位	1.山东科技大学,测绘科学与工程学院, 青岛, 山东 266510, 中国; 2.山东科技大学,地质科学与工程学院, 青岛, 山东 266510, 中国; 3.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	闫金凤,郭全军,陈曦,等. 新疆三工河流域绿洲地下水水质空间变异特征分析[J]. 中国科学院新疆生态与地理研究所,2009,31(10):1710-1716.
APA	闫金凤,郭全军,陈曦,&周可法.(2009).新疆三工河流域绿洲地下水水质空间变异特征分析.,31(10),1710-1716.
MLA	闫金凤,et al."新疆三工河流域绿洲地下水水质空间变异特征分析".31.10(2009):1710-1716.