土壤水分动态及防灾减灾分析研究  

Study on Analysis of Changes of Soil Water and Disaster Prevention and Relief

作　　者：杨帆[1] 刘志军[1] 马忠秋[1] 张万军[1] 唐常源[2] 

机构地区：[1]中国科学院石家庄农业现代化研究所 [2]日本千叶大学

出　　处：《水土保持研究》2005年第6期14-16,57,共4页Research of Soil and Water Conservation

基　　金：国家863重大专项"新型高效雨水集蓄与利用技术研究"(2002AA2Z405);中日国际合作项目"太行山地下水环境研究"资助

摘　　要：通过对林地土壤水势和土壤含水量变化规律得出在降雨入渗过程中,土壤水分变化过程是零通量面发散和收敛型的相互转换;土壤含水量和土壤水势变化规律基本相同,林地10～20 cm剖面水分变化受环境影响最显著,属表层急变型;30 cm剖面水分变化相对缓慢为过渡层;50～100 cm剖面水分变化较为一致,含水率也较为接近为稳变层.The changes of soil water potential and soil moisture content of forest were analyzed,the result showed that the variety of soil water potential was the transpiration between disconvergent of zero flux plane （ZFP） and convergent ZFP in the process of rainfall infiltration ,and soil moisture content was almost the same change as the soil water potential. The change of soil moisture on the section from 10 to 20 cm was the most distinct. This section was the surface leap type. And the variety on the section of 30 cm was slow,which was the transition layer. The variety of the section from 50 to 100 cm was even,and the section was near to the steady layer.

关 键 词：土壤水势 土壤含水量 零通量面 刺槐林地 

分 类 号：S152.7[农业科学—土壤学]