SWAT模型数据库的构建

Construction of Database for SWAT Model

针对SWAT模型数据库标准和国内数据不一致的问题,以陕西省延河流域为例,结合国内外已有的研究和国外的一些软件,以延河流域现有的数据为基础,详细说明了SWAT模型数据库的构建过程,并在此基础上进行模型的率定和验证,率定期和验证期的纳什系数都达到了0.6以上,为SWAT模型在我国北方干旱半干旱地区的应用提供了一个参考。

However, the databases in SWAT model have many inconsistencies with Chinese data. In order to impel its application in China and improve the simulation performance of the model in arid and semi-arid regions, the semi-arid Yanhe River basin in Shanxi Province were taken as an example to study the construction of SWAT database. Based on the previous researches, existing actual data in the Yanhe River basin and abroad software, such as SPAW, this paper described the construction processes and approaches of thedatabases for SWAT model in detail. The values of Nash-Sutcliffe coefficient were 0.644 and 0.630 respectively, which can meet the requirements of model simulation. As a result, a more comprehensive construction method of database for SWAT model was put forward, providing a reference for SWAT model's applications in our country.