珠三角滨海小流域降雨入渗试验与模拟研究  

Test and simulation of rainfall infiltration in small coastal watershed in Pearl River Delta

作　　者：付丛生[1] 陈建耀[1] 曾松青[2] 

机构地区：[1]中山大学地理科学与规划学院,广东广州510275 [2]广东省水文局汕头水文分局,广东汕头515000

出　　处：《人民长江》2010年第9期9-13,共5页Yangtze River

基　　金：国家自然科学基金(40571027);"985工程"GIS与遥感的地学应用科技创新平台(105203200400006);广东省自然科学基金项目(9251027501000021);广东水利科技创新与推广资助项目(2009年度)

摘　　要：调查了中山大学珠海校区滨海小流域内的土壤质地情况,着重分析了其中一个径流试验场A中的土壤颗粒组成;根据实测土壤含水量、土壤吸力数据,用Gauss曲线拟合了吸水过程的土壤水分特征曲线,并编制了计算一维非饱和土壤水运动的计算机程序,模拟分析了径流试验场A在一次降雨入渗过程中、土壤含水量、土壤基质势的变化,获得了不同深度处的土壤吸水过程的水分特征曲线。We performed an investigation on soil texture in the small coastal watershed in Zhuhai campus of Sun Yat-sen University in the delta area of the Pearl River and analyzed the soil particle composition of runoff experimental plot A particularly.According to the measured soil water content and soil suction data,the soil moisture characteristic curve in soil absorption process is fitted with Gauss curve.A computer program for calculating one-dimensional movement of unsaturated soil moisture is developed,and the variation of soil moisture content and soil matrix potential at plot A during a process of rainfall infiltration is simulated.

关 键 词：砂壤土 土壤水分特征曲线 土壤含水量 土壤吸力 GAUSS 降雨入渗 珠海 

分 类 号：S152.7[农业科学—土壤学]