干旱区生态环境知识资源中心(Arid): 石羊河流域地下水循环的同位素和地球化学演化特征

Arid

	石羊河流域地下水循环的同位素和地球化学演化特征
其他题名	Isotopic and geochemical evolution characteristics of groundwater circulation in the Shiyang River Basin
	王利书; 唐泽军
来源期刊	环境科学学报
ISSN	0253-2468
出版年	2013
卷号	33 期号:6 页码:1748-1755
中文摘要	石羊河流域是我国水资源开发程度最高的内陆河流域之一,是干旱区典型的水资源脆弱带,其生态环境问题日益严重,因此,研究石羊河流域地下水循环和地球化学演化规律具有重要意义.本研究从祁连山顶到红崖山水库沿径流剖面采集水样,对降水、地表水和地下水的水化学及同位素delta~(18)O、deltaD进行分析,以揭示地下水的补给、径流和排泄规律.结果表明,地下水径流系统在向下游输送的过程中不断接受河流的渗漏补给和农田灌溉入渗补给,通过河床溢流、人工开采的形式排泄,盆地平原区地下水以垂向运动为主.盆地下游是地下水的主要排泄区,盆地北端地下水随基底抬升而上升溢出,转化为地表水排出.流域地下水从上游到下游矿化度逐渐升高,溶解性总固体(TDS)值在131~1750mg·L~(-1)之间;水化学类型从HCO_3~--SO_4~(2-)-Ca~(2+)-Mg~(2+)型逐渐转化为SO_4~(2-)-HCO_3~--Mg~(2+)-Ca~(2+)型,呈现明显的分带特征.
英文摘要	Located in a typical vulnerable zone of water resources in arid area, Shiyang River Basin is one of the highest water resource development regions among inland river basins in China. With the worsening ecology, it is significant to investigate the groundwater circulation and geochemical evolution characteristics in Shiyang River Basin. In this study, water samples were collected from the top of the Qilian Mountains to Hongyashan Reservoir along the flow cross-section. Hydrochemistry and delta~(18) O, deltaD of precipitation, surface water and groundwater were analyzed to reveal the groundwater recharge, runoff and discharge characteristics. The groundwater runoff system was recharged constantly by rivers leakage and irrigation water infiltration in the process of the runoff to the downstream, and was drained through the river overflow and pumping, with primarily a vertical movement. Downstream of the Basin was the main groundwater discharge area. Groundwater in the north of the Basin overflowed into surface water due to the basement uplift. The Total Dissolved Solids (TDS) values were between 131 and 1750 mg·L~(-1), gradually increasing along the flow direction. The hydrochemical types showed an obvious zonation from the upper to lower reaches, which gradually changed from HCO_3~--SO_4~(2-) -Ca~(2+)-Mg~(2+) to SO_4~(2-) -HCO_3~--Mg~(2+)-Ca~(2+).
中文关键词	同位素 ; 溶解性总固体(TDS) ; 地下水循环 ; 武威盆地
英文关键词	isotopic TDS groundwater circulation Wuwei basin
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:4843223
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229789
作者单位	中国农业大学水利与土木工程学院, 北京 100083, 中国
推荐引用方式 GB/T 7714	王利书,唐泽军. 石羊河流域地下水循环的同位素和地球化学演化特征[J]. 中国农业大学,2013,33(6):1748-1755.
APA	王利书,&唐泽军.(2013).石羊河流域地下水循环的同位素和地球化学演化特征.环境科学学报,33(6),1748-1755.
MLA	王利书,et al."石羊河流域地下水循环的同位素和地球化学演化特征".环境科学学报 33.6(2013):1748-1755.