泾惠渠灌区地下水位埋深的动态特征及影响因素分析  

Analysis of dynamic characteristics and influence factors of groundwater depth in Jinghuiqu Irrigation District

作　　者：张曼菲 周维博[1,2] ZHANG Manfei;ZHOU Weibo(College of Environmental Science and Engineering,Chang′an University,Xi′an 710054,China;Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education,Xi′an 710054,China)

机构地区：[1]长安大学环境科学与工程学院,西安710054 [2]长安大学旱区地下水文与生态效应教育部重点实验室,西安710054

出　　处：《南水北调与水利科技》2018年第2期164-170,195,共8页South-to-North Water Transfers and Water Science & Technology

基　　金："十二五"国家科技支撑计划项目(2011BAD29B01);陕西省自然科学基金(2014JM1030)~~

摘　　要：地下水作为陕西泾惠渠灌区的重要水源,对其动态特征的研究在灌区水资源开发利用方面具有重要的指导意义。根据泾惠渠灌区1981-2010年的地下水位平均埋深资料,采用线性倾向估计法、累积距平法、Sen斜率估计法、Mann-Kendall趋势检验法对泾惠渠灌区地下水位埋深动态序列进行年际变化分析;采用滑动T检验法和双向回归突变分析法分析序列突变性;采用主成分分析法和灰色关联分析法确定影响灌区地下水埋深动态的主要因素。结果表明:灌区1981-2010年地下水位平均埋深基本呈增加趋势,突变点出现在1994年,1994年之前影响灌区地下水埋深动态的主要因素为蒸发量,1994年之后主要影响因素为蒸发量、地下水开采量和灌渠引水量。Groundwater is an important water source of Jinghuiqu Irrigation District.The analysis of its dynamic characteristics provides important guidance to the development and utilization of water resources.Based on the groundwater depth data of Jinghuiqu Irrigation District during 1981-2010,we analyzed its interannual variation using linear tendency estimation method,cumulative departure,Sen slope estimation method,and Mann-Kendall trend test.We analyzed the mutation of groundwater depth using smoothing T test and two-dimensional regression mutation analysis.We determined the most important influence factors of groundwater depth using principal component analysis and grey relationship analysis.The results showed that the groundwater depth tended to increase during 1981-2010.The mutation happened in 1994.Before 1994,evaporation was the most important influence factor of groundwater depth.After 1994,the most important influence factors became evaporation,groundwater extraction,and canal water diversion.

关 键 词：泾惠渠灌区 地下水位埋深 趋势分析 突变检验 影响因素 

分 类 号：P641[天文地球—地质矿产勘探]