40年来栾城降水变化特征分析

Characteristics of Precipitation at Luancheng Station in Recent 40 Years

分析了1960～2001年地处华北平原典型区的中国科学院生态系统网络站之一——栾城农业生态系统实验站42年的降水变化特征。对其年际动态变化和年内分配,以及作物各生长阶段的变化特征进行了分析,并对其频率特征进行了讨论。

Characteristics of the precipitation during 1960～2001, at Lancheng Agro-ecosystem Station, the member of CERN （China Ecosystem Research Network）, located at the North China Plain, was analyzed by statistic method. Its annual variation, seasonal fluctuation, and distribution in different growing period of local typical crops, and their statistic character are discussed.