摘要
以淅川县丹江口库区黄水河小流域为例,探讨了数据缺乏情况下分布式水文模型(SWAT)中气象和土壤数据库的构建技术.运用SWAT模型中的"天气发生器"模拟日太阳辐射量,用PcpSTAT和Dew02分别实现降雨量相关因子和露点温度计算;采用3次样条插值法实现土壤粒径的转换,用SPAW软件结合有机质含量数据计算得到模型需要的土壤物理属性数据;研究构建的气象和土壤数据库为SWAT模型在该区域应用奠定了基础.
Taking Huangshui basin located in Danjiangkou reservoir of Xichuan county as an example, the methods of establishing weather and soil databases needed in SWAT are studied in the case of data deficiency. Daily solar radiation data is simulated with the weather generator of SWAT. Precipitation data and dew point temperature are calculated using PcpSTAT and Dew02 respectively. Cubic spline interpolation method is used to make the soil grain size conversion, and the soil physical characteristics are estimated by the SPAW software combinating with data of soil organic matter content. The established weather and soil databases lay the foundation for the application of SWAT model in the study area.
出处
《河南科学》
2011年第12期1458-1463,共6页
Henan Science
基金
国家自然科学基金(40971128)
国家支撑计划重点资助项目(2007BAD87B09)
