干旱区生态环境知识资源中心(Arid): 陕北地区河川基流的时空演变规律

Arid

	陕北地区河川基流的时空演变规律
其他题名	Spatial-temporal Evolution of River Baseflow in Northern Shaanxi
	顾磊; 张洪波; 陈克宇; 俞奇骏
来源期刊	地球科学进展
ISSN	1001-8166
出版年	2015
卷号	30 期号:7 页码:802-811
中文摘要	陕北地区地下水关系复杂,且与地表水交换十分频繁,给区域水资源评价与利用提出了严峻的挑战。通过估算陕北风沙区高家堡水文站和黄土区高石崖、曹坪水文站的基流量过程,分析了各站基流序列与对应区域的面降水序列的演化趋势及变异驱动关系;研究了其多时间尺度变化特征。结果表明:1风沙区地下水对径流补给量远大于黄土区;2不同地区的河川基流量均显著减少,主要受人类活动驱动;3各站基流量的周期及丰枯变化与其面降水量序列的周期变化在中小尺度上响应较为密切;4风沙区降水径流关系较黄土区更为不稳定,原因在于其受到地下水蓄滞和侧向补给的影响更显著。在变化环境下的影响,风沙区水循环过程将更趋复杂多变,因此水资源评价中必须考虑地下水的影响。
英文摘要	The interaction between groundwater and surface water in northern Shaanxi is quite complicated and frequent under the influence of regional hydrogeological condition and human intervention. These performances bring serious challenges to regional water resources assessment and utilization. The river baseflow process at Gaojiabu Station in windy desert region,Gaoshiya and Caoping Station in loess region were taken as research objects,and their variation trends and change points in the river baseflow series were analyzed in this paper. In addition,to explore the cause of the baseflow change,this research compared their correlations with precipitations in the same area respectively from two aspects of flow variation and multi-timescale characteristics. The results show that: ① groundwater recharges for river flow in windy desert region significantly exceed those in loess region; ②baseflows of all the rivers in the study area reducing significantly are mainly determined by human intervention such as the extensive pumping of groundwater; ③periodic changes of baseflow in each station response closely to precipitation change on meso-scale and small-scales; ④precipitation-runoff relationships in windy desert regions are much more complicated and unstable than loess region,which is mainly because of its more significant impact from groundwater storage and the lateral recharge change. Under the changing environment,the water cycle in windy desert regions would be in complexity and variability. Therefore,it is recommended that,groundwater changes need to be considered in regional water resources assessment.
中文关键词	河川基流 ; 趋势变化 ; 周期波动 ; 陕北地区
英文关键词	River baseflow Variation tendency Periodic fluctuation Northern Shaanxi
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:5493301
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232511
作者单位	长安大学环境科学与工程学院, 旱区地下水文与生态效应教育部重点实验室, 西安, 陕西 710054, 中国
推荐引用方式 GB/T 7714	顾磊,张洪波,陈克宇,等. 陕北地区河川基流的时空演变规律[J],2015,30(7):802-811.
APA	顾磊,张洪波,陈克宇,&俞奇骏.(2015).陕北地区河川基流的时空演变规律.地球科学进展,30(7),802-811.
MLA	顾磊,et al."陕北地区河川基流的时空演变规律".地球科学进展 30.7(2015):802-811.