基于西北区甘肃省监测数据的土壤墒情综合诊断模型验证

Verification of integrated diagnostic model of soil moisture based on the monitoring data in Gansu Province

本文应用甘肃省2个市区的13个墒情监测点的数据验证土壤墒情综合诊断模型在西北区半湿润和半干旱地区的适应性,建模使用2012—2014年的数据,模型验证使用2015年的数据。结果表明:模型在西北区甘肃省半湿润和半干旱地区具有较好的适应性,验证合格率分别为半湿润地区80%以上和半干旱地区90%以上;不同降水量区域模型参数不同;降水越少的地区模型预测合格率越高。本研究表明,墒情综合诊断模型可以应用于西北半湿润和半干旱地区。

Using the data of 13 soil moisture monitoring sites in 2 counties in Gansu Province to verify the adaptability of the integrated diagnostic model of soil moisture in the wemi-arid and semi-humid regions in Northwest China. The model was established by the data during the period of 2012-2014, and validated by the data of 2015. The results showed that the model had good adaptability in the semi-arid and semi-humid regions of Gansu Province, with a qualification rate of over 80% in the semi-humid regions and over 90% in the semi-arid regions. Different precipitation regions had different model parameters, and higher prediction accuracy of the model was found on less-precipitation monitoring sites. In conclusion, the integrated diagnostic model can be used in semi-arid and semi-humid regions in Northwest China.