黄淮海平原典型农区的气候变化特征

为了解黄淮海平原典型农区近期气候变化状况与区域差异,为该区域农业可持续发展提供参考依据,利用黄淮海平原典型农区商丘市8个气象站点1991-2010年的气温与降水量资料,对该区气温和降水量的变化特征进行了系统研究。结果表明:近20年来,黄淮海平原典型农区气候显著变暖,年平均气温升温率为0.04℃/年,气候变暖主要发生于20世纪90年代后期;变暖为全年温度升高,其中,秋季变暖尤为显著;年降水量呈增加趋势,但不明显,其中,夏季对年降水量的增加贡献最大。在研究时期内,商丘地区温度和降水均普遍升高,整个区域呈现暖湿化趋势,但降水量的增加较弱。

Features of Climate Changes in Typical Rural Area of Huanghuaihai Plain

Based on the precipitation and mean temperature data of eight meteorological stations from 1991 to 2010 in typical rural areas of Huanghuaihai Plain,the temporal characteristics of climate variation were analyzed to know the change and regional variation of climate in typical rural areas of Huanghuaihai Plain.The results showed that in recent 20 years,climate warming was significant in the study area,with an increase rate of annual mean temperature by 0.04 ℃/year,and the climate warming mostly occurred after 1970s.There was an obvious increasing trend in annual precipitation in typical rural areas of Huanghuaihai Plain.The contribution of summer precipitation to annual precipitation was the highest.Over the period,the climate change in the study area was mainly characterized by combination of warming and wetter.