沈阳东陵区近58年农业气候资源趋势变化

对沈阳东陵区近58年农业气候资源趋势变化进行分析,结果表明,年日照时数趋势减少309h,气候跃变前后平均减少170h,4～7月是日照时数减少的主要时段。年平均气温趋势升高1.5℃,跃变前后平均升高1.1℃。平均最高气温升高1.2℃,平均最低气温升高1.5℃;在气温升高的过程中最低气温的贡献最大,上半年是升温的主体,趋势升高2.2℃。年降水量趋势减少155mm,气候跃变前后降水量平均减少53mm,多雨年在减少,少雨年在增多。春季降水量略有增加,夏季降水量趋势减少95mm,秋季降水量趋势减少50mm,冬季持平。

Trend Changes of Agro-climatic Resources in Dongling District of Shenyang in the Past 58 Years

The change trend of agro-climatic resources in Dongling District of Shenyang in the past 58 years were analyzed.The results showed that the annual sunshine hours reduced 309 h,climatic jump had an average reduction of 170 hours.April~July was the main stage of reduced sunshine hours.The annual average air temperature increased 1.5 ℃,jump had an average increase of 1.1 ℃.The average maximum temperature increased 1.2 ℃,the average minimum temperature increased 1.5 ℃.In the process of warming,the lowest air temperature had the largest contribution.The first half year was the main body of warming,with the increase of 2.2 ℃.The annual precipitation reduced 155 mm.The average precipitation reduced 53 mm before and after climatic jump.The wet years were reducing and the drought years were on the rise.The spring precipitation had a slight increase and the su mmer precipitation had the reduction of 95 mm,the fall precipitation reduced 50 mm and the precipitation in winter was on the flat.