不同矿化度微咸水对土壤入渗特征的影响研究  

Study on the Influence of Slightly Salty with Different Degree of Mineralization to Soil Infiltration

作　　者：吴忠东[1] 王全九[1] 苏莹[1] 纪轶 

机构地区：[1]西安理工大学 [2]淄博市环境监测站,山东淄博255012

出　　处：《人民黄河》2005年第12期49-50,共2页Yellow River

基　　金：国家"863"计划项目(2002AA2Z4061);国家自然科学基金资助项目(40371057)

摘　　要：根据室内微咸水积水入渗土壤水盐运移模拟试验结果,分析了包括淡水在内的6种不同矿化度湿润锋、土壤含水量的变化特征。研究结果表明,微咸水入渗的湿润锋在相同的时间内运移深度更大,或者湿润锋运移到相同的深度时微咸水所用的时间更短。入渗水量与湿润锋呈线性关系,湿润土体的含水量由地表向下逐渐由饱和含水量减少至初始值,水分剖面变化由缓到陡。The paper analyzes the variation characteristics of wetting front and soil moisture of 6 different degrees of mineralization including slightly salty according to the modeling results of water and salt movement of indoor slightly salty soil infiltration.The results show that the movement of wetting front of slightly salty infiltration is deeper under the same time condition,or the time is shorter to move to the same depth.The infiltration water and wetting front present linear relationship,the moisture content of bentonite reduces from saturation capacity at the surface to the initial value and the profile variation of water content is from gentle to steep.

关 键 词：微咸水 湿润锋 累积入渗量 土壤含水量 

分 类 号：S152.7[农业科学—土壤学] TV211.1[农业科学—农业基础科学]