摘要
利用收集的1985—2015年地下水水位及水质动态监测数据,选取呼和浩特盆地山前至平原中部典型剖面为研究对象,分析不同地貌单元地下水水位动态变化及其水文地球化学演化特征。结果表明:研究区深层、浅层地下水水位持续下降,矿化度不断升高;冲洪积扇与平原交互带深层、浅层地下水水化学特征差别逐渐加大,而平原中部深层、浅层地下水水化学特征差别逐渐缩小;2005—2015年平原区地下水浓缩程度逐渐增大,受到的侧向径流补给的地下水量由原来的缓慢增加转变为快速减少;2005年以前,浅层地下水氧化还原条件向偏氧化环境转化,2005年以后逐渐向还原环境转化,而深层承压水的氧化还原条件基本保持稳定。
This paper used the dynamic data of groundwater level and water quality in the typical section from the piedmont to the central plain in 1985 to 2015 to analyze the evolution characteristics of groundwater level dynamic and hydro geochemistry in different physiognomy cells. The results show that in the last 30 years,the groundwater level has continued to decline in the study area,and the TDS of groundwater shows an increasing trend. Moreover the difference of hydro chemical type between shallow groundwater and confined groundwater in the interaction area of alluvial fan and plain gradually increases,but gradually decreases in the middle of the plain. From 2005 to 2015,the concentration intensity of groundwater in the plain area was rapidly increased and the strength of lateral recharge has switched into a fast decreasing pattern. Before 2005,the redox condition of shallow groundwater showed a tendency toward oxidation and then to a trend toward reduction,while the redox condition of confined water was basically stable.
作者
赵瑞科
曹文庚
杨会峰
王凤元
李元杰
陈南祥
ZHAO Ruike;CAO Wengeng;YANG Huifeng;WANG Fengyuan;LI Yuanjie;CHEN Nanxiang(North China University of Water Resources and Electric Power, Zhengzhou 450045, China;Institute of Hydrogeology and Environmental Geology, CAGS, Shijiazhuang 050061, China;9th Geological Team, Hebei Bureau of Geology and Mineral Resources, Xingtai 054000, China;Inner Mongolia Institute of Geological Environmental Monitoring, Hohhot 010020, China)
出处
《人民黄河》
CAS
北大核心
2018年第5期78-82,88,共6页
Yellow River
基金
国家自然科学基金资助项目(41402234)
中国地质科学院基本科研业务费项目(YYWF2015021)
中国地质调查局项目(DD20160230)
关键词
地下水
水位
离子比
水文地球化学演化
呼和浩特盆地
groundwater
groundwater level
ion ratio
hydro geochemical evolution
Hohhot basin
