水资源与水工程学报2012，Vol.23Issue(3)：114-120,7.
温度对简化蒸发法测定土壤水分特征曲线和导水率曲线的影响
Effect of temperature on the simplifed evaporation method for measuring soil water retention curve and hydraulic conductivity curve
摘要
Abstract
According to the simplified evaporation method which proposed by Schindler( 1980) ,two ten-siometers were installed at two depths within a minitype soil column to measure the soil suction values, and using weighing method obtained the soil moisture in the minitype soil column. Then the hydraulic conductivity curve and water retention curve were calculated by the formula. The results showed that temperature difference has obvious effects on hydraulic conductivity curve and water retention curve. The moisture content of 25℃'s curve is lower than that of 16℃ 's curve at the same suction below the suction a-bout lOkPa in the water retention curve of sand, loam and clay; the moisture content of 25℃ 's curve is higher than that of 16℃ 's curve at the same suction over the suction about lOkPa in sand and clay, but there is no variation in loam. The hydraulic conductivity of 25℃ 's curve is higher than the hydraulic conductivity of 16℃ 's curve at the same suction, the conductivity of the three kinds of soil samples at 25t is higher than that at 16℃.关键词
简化蒸发法/土壤水分/土壤吸力/水分特征曲线/非饱和导水率Key words
simplified evaporation method/ soil water/ soil suction/ water retention curve/ unsaturated hydraulic conductivity分类
农业科技引用本文复制引用
张芳,张建丰,薛绪掌,毛思帅..温度对简化蒸发法测定土壤水分特征曲线和导水率曲线的影响[J].水资源与水工程学报,2012,23(3):114-120,7.基金项目
公益性行业(农业)科技专项(200903007-1) （农业）
