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近55年辽阳市日照时数变化及对农业的影响
引用本文:徐婷,安娟,王鹏.近55年辽阳市日照时数变化及对农业的影响[J].安徽农业科学,2011,39(20):12350-12352.
作者姓名:徐婷  安娟  王鹏
作者单位:辽宁省辽阳市气象局,辽宁,辽阳,111000
摘    要:利用辽阳市观测站1956~2010年的日照时数资料,对近55年来辽阳市的日照时数变化趋势进行研究。分析日照时数演变的一般特征规律,以及气候背景和日照变化对农业的影响。结果表明,近55年来,辽阳市日照时数年变化、年代际变化、季节变化、月变化均呈显著减少趋势,年平均日照时数在1994年后减少趋势明显,反弹上升到平均线以上的可能性较小;进入21世纪,辽阳市日照时数减少趋势加剧;夏季减少幅度最大,春季减少幅度最小;5~7月、11~翌年1月是日照时数减少的主要时段,对大田作物和设施农业生产有较严重的影响。

关 键 词:日照时数  气候变化  气候倾向率  影响

Effect of Sunshine Hours Change on the Agriculture in Liaoyang during Recent 55 Years
Institution:XU Ting et al (Liaoyang Meteorological Bureau,Liaoyang,Liaoning 111000)
Abstract:Based on the sunshine duration data of Liaoyang meteorological station during 1956-2010,the change trend of sunshine hours of Liaoyang in nearly 55 years was studied.The general characteristics of sunshine hours evolution as well as the influence of climate and sunshine change on agriculture were analyzed.As indicated by the results,the annual,interdecadal,seasonal and monthly variation of sunshine hours in Liaoyang during the recent 55 years decreased significantly,and the annual average sunshine hours decreased obviously after 1994,which was less likely for to rebound above the average.In the 21st century,the decrease of sunshine hours in Liaoyang intensified with the biggest in summer and the smallest in spring.The sunshine hours reduced obviously from May to July and November to January,which had serious impact on the production of field crops and facility agriculture.
Keywords:Sunshine hours  Climate change  Climate trend rate  Impact
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