| 近50年建昌县热量资源特征变化研究 |
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| 引用本文： | 马永忠,李明春,黄英华,杜丙义,费杰.近50年建昌县热量资源特征变化研究[J].安徽农业科学,2010,38(28):15749-15750,15752. |
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| 作者姓名： | 马永忠 李明春 黄英华 杜丙义 费杰 |
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| 作者单位： | 辽宁省建昌县气象局,辽宁建昌125300 |
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| 摘 要： | 利用建昌近50年气象观测资料,采用线性趋势分析方法、气候倾向率概念,分析热量资源特征变化。结果得出,近50年来,建昌县年平均气温升高1.5℃;春、夏、秋、冬四季气温升高依次是1.7、0.9、1.0、2.5℃;11～4月是气温升高的主要时段。≥10℃积温增加207℃,无霜期延长5d。80年代是气温变化的＂拐点＂,其前后年平均气温平均升高1.0℃,春季平均气温升高1.2℃,冬季升高1.6℃,夏季、秋季均升高0.8℃;≥10℃积温平均增加148℃;无霜期平均延长6d。
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| 关 键 词： | 热量资源 趋势变化 倾向率 拐点 建昌 |
Study on the Thermal Resource Characteristics Changes of Jianchang County in Recent 50 Years |
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| Institution: | MA Yong-zhong et al (Liaoning Provincial Meteorological Bureau, Jianchang, Liaoning 125 300) |
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| Abstract: | Based on the meteorological observation data of Jianchang County in recent 50 years,the characteristics changes of thermal resources were analyzed by using linear trend analysis method and the concept of climate trend rate.The results showed that the annual mean temperature in Jianchang County in recent 50 years increased 1.5 ℃.The increase of temperature in spring,summer,autumn and winter was 1.7,0.9,1.0 and 2.5 ℃.From November to April was the main time period of elevated temperature.≥10 ℃ accumulated temperature in-creased 207 ℃ and the frost-free period extended 5 days.The 1980s was the turning point of the temperature change.The annual average tem-perature average before and after it increased 1.0 ℃.The average temperature in spring increased 1.2 ℃.The average temperature in winter increased 1.6 ℃.≥10 ℃ accumulated temperature increased 148 ℃ on the average.The frost-free period prolonged 6 days on the average. |
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| Keywords: | Thermal resources Trend changes Tend rate Inflection Jianchang |
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