摘要
[Objective] The aim was to establish drought forecasting model with high precision. [Method] With an ARIMA regression model, the research performed Palmer Drought mode（PDSI） time series modeling analysis of Henan Province based on PDSI time series and DPS（Data Processing Software） in order to build drought forecasting model. [Result] It is feasible to perform drought forecasting with appropriate parameters. [Conclusion] ARIMA model is practical and more precise in PDSI-based drought analysis and forecasting.
[目的]构建准确度较高的旱情预测模型。[方法]采用ARIMA回归模型,对已经建立的河南省帕默尔旱度模式(PDSI)时间序列进行分析建模,借助DPS数据处理软件构建未来干旱预测模型。[结果]通过选取合适的参数,能够较好地预测未来干旱发生的可能性。[结论]ARIMA模型在PDSI的干旱的分析和预测上具有一定的实用性和较好的预测精度。
