砒砂岩区原状和扰动土壤水分入渗过程  

Water Infiltration Process in the Undisturbed and Disturbed Soil in the PiSha Sand Stone Area

作　　者：马文梅 马云飞 张兴昌[4] MA Wenmei;MA Yunfei;ZHANG Xingchang(Key Laboratory of Disaster Monitoring and Mechanism Simulation, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013;College of Geography and Environment Engineering, Baoji University of Arts and Sciences, Baoji,Shaanxi 721013;The Center of Baoji Agricultural Technology Extension , Baoji,Shaanxi 721031;Institute of Soil and Water Conservation , Northwest Agriculture and Forestry University, Yangling, Shaanxi 712100)

机构地区：[1]宝鸡文理学院陕西省灾害监测与机理模拟重点实验室,陕西宝鸡721013 [2]宝鸡文理学院地理与环境学院,陕西宝鸡721013 [3]宝鸡市农业技术推广中心,陕西宝鸡721031 [4]西北农林科技大学水土保持研究所,陕西杨凌712100

出　　处：《水土保持学报》2018年第2期128-133,共6页Journal of Soil and Water Conservation

基　　金：中国科学院西部行动计划项目(KZCX2-XB3-13);宝鸡文理学院重点项目(ZK2018046)

摘　　要：基于内蒙古准格尔旗砒砂岩区为研究对象,通过野外原状土的采集和室内模拟土柱试验,采用一维垂直入渗试验,分析了砒砂岩区黄土、砒砂岩、风沙土的原状土和填装土的水分入渗过程。结果表明:原状情况下入渗率、累积入渗量的变化趋势为风沙土>黄土>砒砂岩;扰动情况下入渗率、累积入渗量的变化趋势为风沙土>砒砂岩>黄土;两种土壤中湿润锋的变化趋势与累积入渗量变化趋势一致。利用Philip模型、Kostiakov经验公式和Green-Ampt模型对原状土和扰动土累积入渗量和入渗历时的关系拟合方程均可较好地描述原状土扰动土的入渗过程,其中Kostiakov经验公式拟合值更接近于实测值,拟合精度更高。Based on the Pisha sand stone in the Inner Mongolia ZhunGeErQi as the research object,in this paper,through the field sampling of undisturbed soil and laboratory simulation of soil-column experiment,soil water infiltration were analyzed by one-dimensional vertical infiltration experiment to study the process of water infiltration on the loess soil,aeolian sandy soil and Pisha sand stone.The results showed that the infiltration rate and cumulative infiltration changed trend was：aeolian sandy soil〉loess soil〉Pisha sand stone in the undisturbed soil,and aeolian sandy soil〉Pisha sand stone〉loess soil in the disturbed soil.The wetting front and the cumulative infiltration showed the same trend both in the undisturbed and disturbed soil.Fitting the relationship between infiltration rate and time with Kostiakov empirical formula,Philip model and Green-Ampt equation,the results showed both Kostiakov infiltration equation,Green-Ampt and Philip equation were suitable for simulating the change of cumulative infiltration capacity for the disturbed and undisturbed soils,but Kostiakov formula was more accurate fitting the water infiltration on the disturbed and undisturbed soil than other models.

关 键 词：原状土 扰动土 土壤水分 入渗 砒砂岩区 

分 类 号：S152.7[农业科学—土壤学]