长江流域资源与环境 >> 2013, Vol. 22 >> Issue (01): 88-.

• 农业发展 • 上一篇    下一篇

近50年重庆市农业气候资源变化特征分析

范 莉 |王 勇 ||张天宇   

  1. (1.重庆市气象科学研究所|重庆 401147;2.重庆市气候中心|重庆 401147)
  • 出版日期:2013-01-20

ANALYSIS OF CHANGING CHARACTERISTICS OF AGRICULTURAL CLIMATE RESOURCES OVER 50 YEARS IN CHONGQING

FAN Li1, WANG Yong2, ZHANG Tianyu2   

  1. (1.Chongqing Institute of Meteorological Sciences, Chongqing 401147, China|2.Chongqing Climate Center, Chongqing 401147,China
  • Online:2013-01-20

摘要:

利用1960~2010年重庆34个气象台站的气象资料,运用统计学方法、IDW插值法分析了重庆市全年及温度生长期的平均气温、≥10℃积温、降水量和日照时数等农业气象资源的时空变化特征。结果表明:研究期内,重庆市年平均气温总体呈缓慢上升趋势,增幅为037℃/10 a,温度生长期内≥10℃积温亦呈上升趋势,平均增速为1162℃/10 a,以东北部偏东地区增加趋势尤为明显;全市年降水量和温度生长期内降水量均呈东南向西北逐渐减少态势,平均下降速率分别为1972 mm/10 a和1185 mm/10 a;约90%的站点年均日照时数和温度生长期内日照时数均呈减少趋势,且西部减少的趋势较东部更加显著

Abstract:

Based on the weather data from 34 meteorological stations in Chongqing during 19612010,and by using statistical methods and inverse distance weighted interpolation(IDW),the changing characteristics of agricultural climate resources were analyzed.The agricultural climate resources included yearly average temperature,temperaturedefined growing period mean temperature,≥10℃ accumulated temperature,precipitation and sunshine hours.The results indicated that the annual mean temperature in Chongqing showed an overall increase slowly during 19612010,and the growing rate was 037℃/10 a.≥10℃ accumulated temperature showed increasing trends in temperaturedefined growing period,the mean growing rate was 1162℃/10 a,and the increasing trend was obvious in the eastnortheast region.The annual precipitation and the precipitation in temperaturedefined growing period decreased gradually from southeast to northwest,the average decreasing trend were 1972 mm/10 a and 1185 mm/10 a,respectively.The sunshine hours of the annual and temperaturedefined growing period within about 90% meteorological stations decreased,and the decreasing trend was more significant in west region than that in east region

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