中国农业气象 ›› 2011, Vol. 32 ›› Issue (增刊): 218-221.

• 论文 • 上一篇    下一篇

气候变化背景下房县干旱的响应

冯明,张谦,胡英,陈璇   

  1. 武汉区域气候中心,武汉430074;湖北省防雷中心,武汉430074;房县气象局,房县440000
  • 出版日期:2011-10-31 发布日期:2011-11-24
  • 基金资助:

    汉江中下游干旱监测预警系统建设(武汉区域气候中心自立项目)

Response of Droughts in the Context of Climate Change in Fangxian County

FENG Ming,ZHANG Qian,HU Ying,CHEN Xuan   

  1. Wuhan Regional Climate Center, Wuhan430074,China; Hubei Lightning Protection Center, Wuhan430074;
    Fangxian Meteorological Bureau, Fangxian440000)
  • Online:2011-10-31 Published:2011-11-24

摘要: 在气候变化背景下,利用房县50a(1961-2010年)的降水和气温资料,计算干旱指数,并用其来探讨房县干旱的变化情况及其对农业生产的影响。结果表明:作物生长季和冬前生长季的干旱指数变化呈上升趋势,且这种变化趋势的主要原因是温度变化呈上升趋势,降水变化呈减少趋势。夏季的干旱指数变化呈减小趋势,且这种变化趋势的主要原因是温度变化呈下降趋势,降水变化呈增加趋势。干旱及其变化对房县的粮食作物总产、小麦和水稻产量有一定的影响。研究结果可为农业应对气候变化的不利影响提供科学依据。

关键词: 气候变化, 干旱指数, 变化趋势

Abstract: In the context of climate change, droughts index was calculated by using precipitation and temperature data in Fangxian county in 50 years(1961-2010). The droughts were discussed and the effects on agricultural yields were analyzed through utilizing the index in Fangxian county. The results showed that droughts index change has an increasing trend in crop growth season and growing seasons before winter. The main reason lies in that temperature change showed increasing trend and precipitation showed decreasing trend. The droughts index change showed a reducing trend in summer, and the main reason is that temperature change showed a decreasing trend while precipitation showed an increasing trend. The droughts index change will affect food crop output, wheat yield and rice yield in Fangxian county. The research can be used as a scientific basis for the adverse effects study of climate change to agriculture. 

Key words: Climate change, Droughts index, Variation tendency