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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (32): 276-280.

所属专题： 资源与环境； 现代农业发展与乡村振兴； 农业气象

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

沈阳市霜期农业气候资源特征分析

吴克 张巍 杨霄 张国林   

  • 收稿日期:2012-03-19 修回日期:2012-04-01 出版日期:2012-11-15 发布日期:2012-11-15

Analysis of the Characteristics of the Frosty Agro-climatic Resources of Shenyang City

  • Received:2012-03-19 Revised:2012-04-01 Online:2012-11-15 Published:2012-11-15

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摘要：

研究霜期农业气候资源变化，为沈阳市霜期农业顺利发展，趋利避害提供科学依据。利用沈阳1951—2010年气象资料，采用常规数理统计方法，分析霜期光热水资源变化特征。结果表明：近60年来，因气候变暖沈阳市霜期缩短趋势明显，气象要素变化稳定性较差。与1951—2010年相比，近30年的霜期气温升高0.9℃，高温年增加5.7%；日照时间减少66 h，寡照年增加16.7%；降水量增加8.3 mm，多雨雪年增加5%；阴天日数增加6天，几率提高8.3%；大风日数减少，大、暴雪次数变化平缓。连续阴天寡照、气温升高变化不稳是沈阳市冬季气候特点，对冬季设施农业发展影响较大。只有完善设施农业设备现代化、智能化功能，才能更好地发挥光热资源效率。

关键词: 主成分分析, 主成分分析

Abstract:

The study of the frosty agricultural climate resources change, frosty agriculture climate resources change, frosty agriculture in Shenyang City, the smooth development, while avoiding disadvantages to provide a scientific based on Shenyang 1951-2010 meteorological data conventional mathematical statistical methods, analysis of the frosty light and heat water variation. The results showed that: the past 60 years due to climate warming in Shenyang City frosty period was shortened obviously, the meteorological elements at less stable. Compared with 1951-2010, nearly 30 years, frosty temperatures increased 0.9℃, high temperature increased by 5.7%; sunshing time was reduced to 66 h, the increase of 16.7%, increased in precipitation 8.3 mm, much rain and snow, an increase of 5%; cloudy days increased 6 days, the probability increased by 8.3%; windy days in reducing, big blizzard number of changes smoothly. Continuous cloudy scant sunlight, temperatures rose to changes in unstable was climatic characteristics of the winter of Shenyang City, a greater impact on the winter agricultural development, only to improve the facilities for modernization of agricultural equipment, intelligent features, in order to play a better thermal efficiency of resources.