摘要
应用自然正交函数分解 (EOF)方法 ,分析了甘肃省庆阳地区春末夏初干旱的综合评价指数DH 的空间分布特征及随时间演变规律 ;分析了春末夏初干旱对冬小麦和玉米产量的影响 ;应用逐步回归方法建立了春末夏初干旱的预测模型 ,业务使用效果良好。
The temporal-spatial distribution of drought index D H in late spring and early summer in the eastern Gansu Province is analyzed by EOF. The effect of drought on output of winter wheat and corn is also analyzed. Finally, a forecast model of drought index is developed with stepwise regression and it has better forecast results.
出处
《气象》
CSCD
北大核心
2003年第9期34-36,41,共4页
Meteorological Monthly
基金
国家"九五"重点项目"我国短期气候预测系统研究"资助
课题编号 :96 90 8 0 5 0 3