不同植被土壤水分入渗特征初探  

Infiltration Characteristics of Soil Moisture in Different Types of Vegetation

作　　者：彭新德[1,2] 夏卫生[3] 

机构地区：[1]中南大学研究生院隆平分院,湖南长沙410125 [2]湖南省农业信息与工程研究所,湖南长沙410125 [3]湖南师范大学资源与环境科学学院,湖南长沙410081

出　　处：《热带作物学报》2012年第10期1910-1913,共4页Chinese Journal of Tropical Crops

基　　金：国家自然科学基金项目(No.41271302);湖南省自然科学基金项目(No.10JJ3035);国家社会科学基金项目(No.10CJY027);湖南省科技厅项目(No.2009FJ3171)

摘　　要：为提高水资源特别是自然降水利用率,研究了长沙市区3种不同类型植被土壤水分入渗特征。结果表明,乔灌草与灌草、人工草坪两种植被土壤水分入渗率均随时间延长而减小,但裸地土壤水分入渗率随时间变化出现较大波动;3种不同类型植被土壤水分入渗能力差异较大,以人工草坪植被土壤水分入渗速率最大,前70 min的平均入渗率为0.64 cm/min,乔灌草与灌草植被土壤的为最小,前70 min的平均入渗率为0.21 cm/min。In order to enhance the utilization rate of water resources, in especial the utilization rate of natural precipitation, the infiltration characteristics of soil moisture in three different types of vegetation in Changsha City were studied. The results showed that the infiltration rate of soil moisture in vegetation of tree, shrub and grasses and vegetation of artificial lawn all decreased with time pass, but the infiltration rate of soil moisture in bare land showed a huge fluctuation with time pass; the infiltration capacity of soil moisture, in three different types of vegetation had huge differences, the highest infiltration rate of soil moisture was in vegetation of artificial lawn, whose average infiltration rate within 70 min was 0.64 cm/min, the lowest infiltration rate of soil moisture was in vegetation of tree, shrub and grasses, whose average infiltration rate within 70 min was 0.21 cm/min.

关 键 词：植被类型 土壤水分 入渗率 

分 类 号：S152.7[农业科学—土壤学]