基于天然降水的因旱粮食损失分析方法及评估模型

Evaluation Models and Methods of Analyzing Grain Loss Caused by Drought Based on Precipitation

在系统分析因旱粮食损失因子的基础上,进一步分析了各影响因子作用下因旱粮食损失变化趋势。利用长系列降水资料,建立了基于降水量、时间变化的二元因旱粮食损失评估模型,可准确预估旱作农业区不同降水条件下不同水平年的粮食作物单位面积因旱损失数量,可科学有效地指导抗旱减灾工作。

Based on an analysis of factors affecting grain loss caused by drought,the change of these factors is analyzed.At the same time,by a series of precipitation data,the binary evaluation model of grain loss is established.All these can provide new methods for assessing grain loss in different years,which can play a very important role in alleviating drought and disaster.