降水和地下水开采对通辽市科尔沁区潜水位的影响  

Effects of Precipitation and Groundwater Exploitation on the Phreatic Water Table in Khorqin District,Tongliao City

作　　者：束龙仓[1,2] 张彤豪 澈丽木格 刘圣昱 刘波[1,2] Shu Longcang;Zhang Tonghao;Che Limuge;Liu Shengyu;Liu Bo(College of Hydrology and Water Resources,Hohai University,Nanjing 210098,China;The National Key Laboratory of Water Disaster Prevention,Hohai University,Nanjing 210098,China;Tongliao Water Conservancy Development Center,Tongliao 028000,Inner Mongolia,China)

机构地区：[1]河海大学水文水资源学院,南京210098 [2]河海大学水灾害防御全国重点实验室,南京210098 [3]通辽市水利事业发展中心,内蒙古通辽028000

出　　处：《吉林大学学报（地球科学版）》2024年第3期954-966,共13页Journal of Jilin University：Earth Science Edition

基　　金：国家重点研发计划项目(2021YFC3200502);国家自然科学基金项目(41971027)。

摘　　要：变化环境下(气候变化和人类活动)潜水位动态演化过程识别是当前我国乃至全球水资源领域面临的主要科学问题。为了分析多影响因素下的潜水位时空动态变化,以降水和地下水开采为例,基于通辽市科尔沁区2016年1月—2019年12月实测地下水位动态数据,采用Mann-Kendall(MK)趋势检验和栅格代数法分析了区域潜水位的时空变化规律,并利用交叉小波分析、斯皮尔曼相关系数和多元线性回归法进一步量化分析了不同区域降水和地下水开采对潜水位的影响。结果表明:研究时段内科尔沁区潜水位总体呈下降趋势,年均降幅为0.36 m,中部和西部地区潜水位下降较为严重;根据潜水位差值空间分布特征,将研究区划分为潜水位基本平衡区、下降区和严重下降区,其分别占研究区总面积的9.88%、49.65%和40.47%;基本平衡区的潜水位受降水因素影响显著,受地下水开采变化影响极小,下降区和严重下降区潜水位受地下水开采的影响相较于降水影响更大。Identification of regime evolution process of phreatic water table under changing environment(climate change and human activities)is the main scientific problem in the field of water resources in China and even globally.In order to analyze the spatial and temporal dynamic changes of phreatic water table under multiple influencing factors,considering precipitation and groundwater exploitation,the spatial and temporal variation of regional phreatic water table from January 2016 to December 2019 in Khorqin district,Tongliao City was analyzed using Mann-Kendall(MK)trend test and grid algebra method.In addition,cross-wavelet analysis,Spearman correlation coefficient and multiple linear regression method were used to further quantify the influence of precipitation and groundwater exploitation on the phreatic water table in different regions.The results show that,during the study period,the phreatic water table in Khorqin district shows a general decline trend,with an average annual decrease of 0.36 m,and the decrease of phreatic water table in central and western areas is more severe.According to the spatial distribution characteristics of the phreatic water table difference,the study area is divided into phreatic water table dynamic balance area,decline area and serious decline area,which account for 9.88%,49.65%and 40.47%,of the total area of the study area,respectively.The phreatic water table in the dynamic balance region is mainly influenced by precipitation,only slightly affected by groundwater exploitation.In the phreatic water table decline region and serious decline region,the phreatic water table is more affected by exploitation than by precipitation.

关 键 词：通辽市科尔沁区 潜水位动态 降水 地下水开采 交叉小波 

分 类 号：P641.2[天文地球—地质矿产勘探]