1951～2008年天津市气候季节变化特征及其对农业的影响

Variation of Climate Season and Its Effect on Agriculture in Tianjin from 1951 to 2008

利用天津市1951～2008年的逐日气象资料分析了该市各气候季节的长度及初日变化及其对天津农业的影响。结果表明,50多年来,天津市各季节的长度及初日均发生了明显变化,主要表现为:冬季缩短,夏季延长;入冬推迟,入春、入夏提前。气候变暖导致天津市气候季节出现较大调整,对农作物播种时间、播种面积、产量及病虫害等均产生了重要影响。

The changes of length and beginning date of each season in Tianjin and its effect on agriculture were analyzed with daily meteorological data in 1951-2008.The results showed that the length and beginning date of each season in Tianjin all had obvious change in the past 50 years,and that mainly showed as the winter season shortened,summer season prolonged,the beginning time of winter delayed and the beginning time of spring and summer advanced.The climate warming lead to great adjustment of climate season in Tianjin,and that had important effects on sowing time,sowing area,yield,diseases and pests etc of crops.