摘要
降水入渗模拟可以客观地反映随环境条件和人类活动影响下的水循环变化,SWAT可较好地实现对降水入渗过程的模拟,但该模型应用过程中,由于其自带数据库采用美国制,与我国土壤普查所采用的卡钦斯基制或国际制存在一定差异,导致模型本身自带的数据库不能直接使用。针对以上问题,就土壤数据库建立过程中的质地转换和土壤饱和含水率(Ks)的计算进行探讨。应用三次样条法对土壤质地进行了转换,并采用SPAW软件计算Ks值。结果表明将三次样条法应用于吉林西部土壤质地转换效果较为合理,而且通过SPAW计算Ks值大大减少了工作量,提高了工作效率。
Precipitation infiltration simulation is a suitable method to depict the water cycle change under the natural condition and human activity. SWAT model can simulate the precipitation infiltration process well, but its primary database uses the standard Ameri can system, which is different from China＇s Former USSR system and international system. Aiming at the above problem, this paper focuses on the data transition and parameter design. Through using MATLAB software, soil texture transition has been finished with cubic spline interpolation. The soil saturation water ratio （Ks） is calculated by SPAW software. The results show that the cu bic spline interpolation is suitable to solve the soil texture transition and improve the simulation effectively by using SPAW software.
出处
《节水灌溉》
北大核心
2010年第6期15-17,共3页
Water Saving Irrigation
基金
国家自然科学基金资助项目(40572170)
国土资源调查项目(1212010634701)
吉林省环保局项目(3D5090524425)资助
