采用高密度电法仪监测围垦区土壤盐分变化  

Monitoring on change of soil salinity with high-density resistivity instrument in a reclaimed area

作　　者：周煜 余夏杨 周廷璋 辛沛[1] ZHOU Yu;YU Xiayang;ZHOU Tingzhang;XIN Pei(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]河海大学水利水电学院,江苏南京210098

出　　处：《水资源保护》2018年第2期96-101,110,共7页Water Resources Protection

基　　金：国家自然科学基金(51579077)

摘　　要：为探究自然条件下围垦区盐渍土盐分的变化情况,采用高密度电法仪进行大尺度野外观测,研究了江苏条子泥滩涂围垦区不同时期的地下水埋深及土壤盐分变化情况。结果表明:4 m深度范围以内是最容易受到自然条件影响的区域,其中非饱和区受影响最为显著,而深度超过4 m的区域受影响较小;浅层饱和区1.5 m深度范围盐度变化明显,且旱季盐度明显高于雨季,但深层土壤的盐度没有出现显著的变化;围垦区地下水埋深浅,自然条件下土壤脱盐缓慢,建议采取如埋设暗管等措施加快脱盐速度。In this study,high-density resistivity instrument is applied to measure the change of soil salinity in reclaimed lands.The groundwater depth and the change of soil salt in different period of Tiaozini reclamation area in Jiangsu Province were studied.Results show that 4 m within the depth range is the most vulnerable area affected by natural conditions.The most influential area is unsaturated area,while the depth of more than 4 m is less affected.The salinity changes in the depth range of 1.5 m in the shallow saturated zone,and the salinity of the dry season is obviously higher than that in the rainy season,but there is no significant change in the salinity of the deep soil.The groundwater in the reclamation area is shallow,and the soil desalination is slow under natural conditions.It is suggested to take measures such as buried pipe to accelerate the speed of desalting.

关 键 词：高密度电法仪 地下水埋深 土壤盐度 土壤视电阻率 条子泥滩涂围垦区 

分 类 号：TV122[水利工程—水文学及水资源]