盐碱化灌区不同地类的地下水盐动态分析  

Analysis on the groundwater salt dynamic of different land types in saline irrigation district

作　　者：周美玲 ZHOU Mei-ling(Jiangxi Water Resources Investment Group River Information Co.,Ltd.,Nanchang 330029,China)

机构地区：[1]江西省水投江河信息技术有限公司,江西南昌330029

出　　处：《地下水》2022年第6期73-76,共4页Ground water

摘　　要：为了探究河套灌区地下水盐动态变化规律,在河套灌区解放闸灌域选择一典型监测区,对研究区2013-2018年的地下水位、地下水矿化度资料进行年内、年际动态变化分析。研究结果表明:研究区地下水位表现出年内季节性变化,在春灌和秋浇后地下水位处于峰值,融通前和秋浇前地下水位处于低值,地下水位年际呈现周期性变化,地下水位多年能够保持相对平稳状态。地下水矿化度在年内表现出季节性变化,地下水矿化度受灌溉的影响较大,灌溉后地下水矿化度具有逐渐减小的趋势。耕地地下水矿化度年际变化较小,保持相对平稳的状态,荒地地下水矿化度年际具有增加的趋势,荒地为耕地的排水排盐区域,荒地具有维持河套灌区盐分动态平衡的作用。In order to explore the rule of groundwater salt dynamic in Hetao Irrigation District, a typical monitoring area was selected as the research area in Jiefangzha Irrigation Area of Hetao Irrigation District. The groundwater level and groundwater salinity were analyzed during the year and inter-annual variation in 2013-2018. The research results show that: the groundwater level showed an obvious seasonal change trend during the year variation. The groundwater level was at the peak value after spring irrigation and autumn irrigation. The groundwater level was at the low value before melting and autumn irrigation. The groundwater level had an obvious periodicity during the inter-annual variation. The groundwater level could keep a relatively stable for many years. The groundwater salinity showed an obvious seasonal change trend during the year variation. The groundwater salinity was greatly affected by irrigation and had a decreased trend after irrigation. The annual change of groundwater salinity of cultivated land is relatively small, and it keeps a relatively stable state. The annual change of groundwater salinity of wasteland has an increasing trend. The wasteland is a drainage and salt drainage area of cultivated land, and the wasteland plays a role in maintaining the dynamic balance of salt in Hetao irrigation area.

关 键 词：河套灌区 地下水位 地下水矿化度 耕地 荒地 

分 类 号：P641.74[天文地球—地质矿产勘探] S287[天文地球—地质学]