水土保持研究2018，Vol.25Issue(3)：41-45,5.
不同亚高山草甸群落类型的土壤入渗特征及影响因素
Soil Infiltration Characteristics and Its Influencing Factors in Different Subalpine Meadow Communities
摘要
Abstract
The soil infiltration properties of three typical subalpine meadow communities under different altitudes in the Wolong Nature Reserve were examined.The three subalpine meadow communities include Kobresia setchwanensis meadow,Stellera chamaejasme meadow and Deyeuxia scabrescens meadow.The results showed that the process of soil infiltration in subalpine meadow could be divided into 3 stages including transient phase,gradual phase and stable phase.In the transient phase and gradual phase,the sequence of the soil infiltration rates in three different communities were Kobresia setchwanensis meadow＞Stellera chamaejasme meadow＞Deyeuxia scabrescens meadow.In addition,with increase of soil depth in the Kobresia setchwanensis meadow,the soil infiltration rate showed a gradually decreasing trend.The models of Philip,Jiang Dingsheng,Horton and Kostiakov were used to fit the soil infiltration processes in different subalpine meadow communities.The results showed that Horton model has the highest precision.Correlation analysis showed that the final stable soil infiltration rate had the significantly negative correlation with the soil bulk density,but the significantly positive correlation with the soil total porosity,non-capillary porosity,soil aeration and the aboveground biomass per unit area.关键词
亚高山草甸/群落类型/土壤入渗/土壤物理性质/生物量Key words
subalpine meadow/community types/soil infiltration/soil physical property/biomass分类
农业科技引用本文复制引用
宋爱云,董林水,刘世荣,刘京涛..不同亚高山草甸群落类型的土壤入渗特征及影响因素[J].水土保持研究,2018,25(3):41-45,5.基金项目
国家基础研究发展规划资助项目(2002CB111504) （2002CB111504）
滨州学院博士科研资助项目(2014Y02,2014Y14) （2014Y02,2014Y14）
