摘要
土壤水对降雨响应过程是水文循环的重要组成部分,研究黄土台塬区的土壤水与降雨之间关系尤为重要。以太原市王家峰村为例,建立了降雨蒸发条件下垂向一维土壤水分运动模型,采用试估-校正法似合参数对模型进行识别验证,分别模拟了四种降雨强度下土壤水分剖面体积含水率和湿润锋的变化规律,揭示了不同降雨强度下黄土台塬区土壤水分再分布过程及动态变化规律,最大限度地提高降水资源利用率,为黄土台塬区水土流失治理提供一定理论依据。
The response process of soil moisture to rainfall is an important part in hydrologic cycle. It is particularly significant that research the relationship between soil moisture and rainfall in loess platform tableland area. Taking Wangjiafeng village in Taiyuan city for an example, vertical one-dimensional soil moisture movement model is established under condition of rainfall and evaporation. Estimation-correction method is adopted to fit parameters for model identifica- tion and verification. The variation laws of volume water content and wetting front of soil water profile are simulated un- der four kinds of rainfall intensity. The results reveal the redistribution and dynamic characteristics of soil water in loess platform tableland area. Precipitation utilization ratio is raised in the maximization limit. Meanwhile, it provides the parti- cular theory basis for soil erosion in loess platform tableland area.
出处
《水电能源科学》
北大核心
2012年第12期16-19,共4页
Water Resources and Power
基金
山西省自然科学基金资助项目(2012011033-2)
关键词
黄土台塬区
降雨强度
土壤水
再分布
规律
loess tableland area
rainfall intensity
soil water
redistribution
law
