文章摘要
黎明扬,刘廷玺,罗艳云,段利民,张俊怡,周亚军.半干旱草原型流域土壤入渗过程及转换函数研究[J].水利学报,2019,50(8):936-946
半干旱草原型流域土壤入渗过程及转换函数研究
Study on soil infiltration process and pedo-transfer functions in semi-arid grasslands
投稿时间:2019-05-19  
DOI:10.13243/j.cnki.slxb.20190345
中文关键词: 入渗模型  土壤入渗  土壤转换函数  锡林河流域  稳定入渗率
英文关键词: infiltration model  soil infiltration  pedo-transfer function  Xilin River basin  stable infiltration rate
基金项目:国家重点研发计划项目(2018YFC0406400);国家自然科学基金项目(51620105003,51139002,51479086,51509131);教育部创新团队发展计划滚动支持(IRT_17R60);科技部重点领域创新团队(2015RA4013)
作者单位E-mail
黎明扬 内蒙古农业大学 水利与土木建筑工程学院, 内蒙古 呼和浩特 010018  
刘廷玺 内蒙古农业大学 水利与土木建筑工程学院, 内蒙古 呼和浩特 010018
内蒙古自治区水资源保护与利用重点实验室, 内蒙古 呼和浩特 010018 
txliu1966@163.com 
罗艳云 内蒙古农业大学 水利与土木建筑工程学院, 内蒙古 呼和浩特 010018
内蒙古自治区水资源保护与利用重点实验室, 内蒙古 呼和浩特 010018 
 
段利民 内蒙古农业大学 水利与土木建筑工程学院, 内蒙古 呼和浩特 010018
内蒙古自治区水资源保护与利用重点实验室, 内蒙古 呼和浩特 010018 
 
张俊怡 内蒙古农业大学 水利与土木建筑工程学院, 内蒙古 呼和浩特 010018  
周亚军 内蒙古农业大学 水利与土木建筑工程学院, 内蒙古 呼和浩特 010018  
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中文摘要:
      为了进一步探究半干旱草原砂质草甸地土壤入渗过程与影响因素相互作用的关系,以内蒙古锡林河流域为研究区,在厚栗黄土、草甸沼泽土、草原风沙土、石灰性草甸土、淡黑土等5种土壤类型下设置38个土壤入渗试验点以及62个土壤生态调查点,测定了各点位土壤的粒径、容重、有机质、含水率、地下生物量等理化特征。使用Green-Ampt、Philip、Kostiacov、Horton、Mezencev及USDA-NRCS等6种入渗模型模拟入渗过程,结果显示Horton和USDA-NRCS模型模拟效果最好,Adj-R2分别为0.975和0.911,并利用模拟效果最好的Horton模型计算稳定入渗率,对土壤入渗特性和入渗影响要素进行了主成分和相关性分析并建立土壤转换函数,在此基础上对整个研究区的土壤稳定入渗率进行了1 km×1 km精度的面尺度拓展。研究表明,半干旱草原型流域的土壤入渗主要受到土壤物理属性与外界环境两种要素的影响,使用相关性显著的影响要素建立的土壤转换函数可以较好地模拟半干旱草原型流域的土壤入渗特征值,在小流域尺度上使用土壤转换函数的预测效果相较入渗模型的面尺度拓展更加精细。
英文摘要:
      In order to further explore the relationship between the soil infiltration process and the influenc-ing factors in the semi-arid grassland meadow,the Xilin River Basin,Inner Mongolia was set as subject for the study. The study area has 5 major types of soils,i.e. thick chestnut soil,meadow swamp soil,des-ert aeolian soil, limy meadow sandy soil, and pale black soil. From the surface layers of the soils, soil samples were collected for analysis of particle size composition,bulk density,organic matter content,soil moisture content,underground biomass and some other physical and chemical properties. Six infiltration mod-els were used to simulate the infiltration process, and the Horton model, best performed in simulation, was used to calculate the stable infiltration rate of each testing site. The principal component and correla-tion analysis of soil infiltration characteristics and the influence factors were analyzed and the pedo-transfer function (PTFs) were established. On this basis,the soil stable infiltration rate of the whole research area was expanded with a grid size of 1km×1km. The results showed that the best simulation effects were ob-tained by Horton and USDA-NRCS, with Adj-R2 of 0.975 and 0.911, respectively. Soil infiltration in semi-arid steppe is mainly affected by soil physical properties and external environment. PTFs established by significantly correlated influencing factors can well simulate the characteristic values of soil infiltration, and the prediction effect of PTFs on the small watershed scale is more refined than the surface expansion of the infiltration model.
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