黄淮海夏玉米生长季气候资源时空分布特征分析

Analysis on Spatial-Temporal Distribution Characteristics of Climate Resources during Summer Maize Growing Season in Huang-Huai-Hai Region

利用GIS技术对黄淮海地区202个气象站点自1970—2013年的气温、光照及降水等气象要素和地理数据进行处理,分析了夏玉米生长季内该区域的气候资源时空分布特征。结果表明,区域内热量资源分布在1 800~2 800℃,并有逐步上升趋势,整体上呈现南高北低的基本空间格局;光照条件由北到南逐步递减,平均日照时数在500~900h,但累积光照时数下降明显;降水资源总体较为稳定,平均降雨量位于260~580mm,但年际变化和区域分布差异较大。

Based on data of geographic information and climate data of 202 meteorological stations in Huang-Huai-Hai region from 1970 to 2013,the temperature,precipitation,sunlight were processed by GIS technology and ana?lyzed the Spatial-Temporal distribution characteristics.Results showed that the regional temperature resource were from 1 800 to 2 800℃,the trend was upward,and the overall spatial pattern was that south was higher than north.The quantity of sunlight was gradual reduction from north to south and distributed from 500 to 900 h.Nevertheless,the sunshine time was dramatically reduced.The precipitation overall was from 260 to 580mm,which was a huge dif?ference on interannual variation and Regional distribution.