水利学报2016，Vol.47Issue(2)：150-157,8.DOI:10.13243/j.cnki.slxb.20150224
干旱区高盐度潜水蒸发条件下土壤积盐规律分析
Analysis on law of soil salt accumulation under condition of high salinity phreatic water evaporation in arid areas
摘要
Abstract
Column experiments were carried out to investigate effects of total dissolved solids (TDS)(30g/L and 100g/L), vadose zone lithology (fine sand and silt clay) and depth of groundwater table (0.5m, 1.0m and 3.0m) on distribution of soil salt accumulation under condition of high salinity phreatic water evapora⁃tion in arid areas. Samples were taken seven times from different depths of column for soil salt analysis. The results indicate that under condition of high salinity phreatic water evaporation, the less depth the groundwater table is, the larger soil salinity at the same depth will be. Salinity in soil profile with vadose zone lithology of silt clay is higher than that of fine sand when other conditions are fixed. In addition, soil salinity of phreatic water with TDS of 30 g/L is higher than that with TDS of 100 g/L in the upper layer of silt clay column due to the membrane effect of tenacious soil and filling effect of crystal salt in soil pore, and lower in the lower part of the column. Depth of salt accumulation in silt clay profile tends to shift down with the increase of phreatic water TDS due to the change of capillary water gravity and soil structure as a result of higher TDS.关键词
干旱区/高盐度潜水/潜水蒸发/土壤积盐Key words
arid area/high salinity phreatic water/phreatic water evaporation/soil salt accumulation分类
农业科技引用本文复制引用
贾瑞亮,周金龙,周殷竹,高业新,李阳,王新中..干旱区高盐度潜水蒸发条件下土壤积盐规律分析[J].水利学报,2016,47(2):150-157,8.基金项目
国家自然科学基金-新疆联合基金重点支持项目（U1403282）；国家自然科学基金项目（51069016）；新疆自治区地方公派出国留学成组配套项目（XJDF201307）；新疆自治区水文学及水资源重点学科基金 （）
