摘要
建立了考虑滞后作用的坡地水量转化数学模型，并对模型不同情况下的定解条件进行了分析。利用陕西长武王东沟小流域坡地天然降雨－入渗－产流的实测资料对模型进行了系统检验，结果表明该模型具有较高精度，考虑滞后作用时的模拟值更加接近实测值。在降雨入渗过程中，滞后作用对土壤含水率、入渗速率、径流过程、产流量都有相当大的影响。
Summary In this paper, a mathematical model of warer exchange for hillslope, with which hysteresis was incorporated, was presented. The solution conditions of various boundary conditions were analyzed in this model. At the same time, the model was proved systematically by using the natural rainfall-infiltration-runoff data of hillslope of Wangdong gully small watershed, Changwu in Shaanxi. The simulated results showed that the model was of high precision, especially when the hysteresis was considered, the predicted results were approximated to measured results. Hysteresis results in decreasing in water content in the wening front measured at the end of infiltration, slows down the redistribution. During the process of rainfall-infiltration scoff, hysteresis has a great effect on water contend infiltration rate, flow process all flow volume.
出处
《土壤学报》
CAS
CSCD
北大核心
2000年第1期16-23,共8页
Acta Pedologica Sinica
基金
国家杰出青年科学基金!(49725102)
