摘要
基于标准化降水指数(SPI),利用多元回归方法和自相关模型结合,建立了一套简单、实用的土壤含水率模拟方法。实测站点的检验表明,该方法的均方差与观测平均值的比值达到0.16左右。该方法能够快速、准确地模拟土壤含水率,为农业生产抗旱提供数据支撑。
Based on the Standardized Precipitation Index(SPI),a set of simple,practicable methods for the simulation on soil water content is established with the combination between the multi-regression method and the self-correlation model.The tests made in the actual measuring stations show that the ratio between the mean square errors of the methods and the observed mean values can reach around 0.16.Therefore,the methods can quickly and correctly simulate the soil water content,and then can provide a relevant support for the drought mitigation for agriculture.
出处
《水利水电技术》
CSCD
北大核心
2012年第1期98-100,104,共4页
Water Resources and Hydropower Engineering
基金
基金委创新研究群体基金(51021006)
国家自然科学重点基金(40830637)
国家"973"计划(2006CB403401)
关键词
SPI指数
多元回归
自回归模型
土壤含水率
standardized precipitation index
multi-regression
self-regression model
soil water content
