| 气候变暖背景下东北三省气候生长季时空变化特征 |
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| 引用本文： | 台秉洋,刘滨辉.气候变暖背景下东北三省气候生长季时空变化特征[J].东北林业大学学报,2012,40(4):34-40. |
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| 作者姓名： | 台秉洋 刘滨辉 |
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| 作者单位： | 东北林业大学 哈尔滨 150040 |
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| 基金项目： | 人事部留学回国人员科技活动择优资助项目，北京林业大学"985"优势学科建设平台森林与湿地生态系统保护优势学科子平台课题，国家林业局科技发展中心项目 |
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| 摘 要： | 基于1959—2008年我国东北三省34个气象站点的每日平均气温观测资料,分析了在气候变暖背景下该区气候生长季各指标(生长季起始日期、生长季结束日期、生长季长度和积温)的变化特征,及其与温度变化之间的关系。结果表明:东北三省1959—2008年春季、秋季和3—11月平均温度显著上升,三者随时间的变化规律大体相同,呈现在1987年前围绕多年平均值波动,1987年开始快速上升的特点。整个观测期,东北三省生长季起始日期提前了5.6 d,西部提前的幅度明显高于东部;生长季结束日期延后了5.4 d,中部延后的幅度较南部和北部明显;生长季长度增加了11.0 d,生长季长度倾向率的空间分布特点与生长季起始日期相类似;积温增加了268.7℃.d。1959—2008年间,生长季开始日期提前,生长季结束日期延后,生长季长度变长,积温上升,20世纪90年代后期变化趋势变缓。积温、生长季长度与3—11月平均温度均显著正相关,且积温与其平均温度的相关关系的密切程度总是高于生长季长度;生长季起始日期的变化对于生长季长度的影响更大一些。
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| 关 键 词： | 东北三省 气候生长季 积温 气候倾向率 |
Characteristics of Spatial and Temporal Changes of Climate Growing Season in Northeast China Under the Background of Global Warming |
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| Tai Bingyang
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Liu Binhui.Characteristics of Spatial and Temporal Changes of Climate Growing Season in Northeast China Under the Background of Global Warming[J].Journal of Northeast Forestry University,2012,40(4):34-40. |
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| Authors: | Tai Bingyang Liu Binhui |
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| Institution: | (School of Forestry,Northeast Forestry University,Harbin 150040,P.R.China) |
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| Abstract: | Based on the daily average temperature between 1959 and 2008 from 34 weather stations in Northeast China,the variation characteristics of climate growing season,including the start,end,length and accumulated growing degree-days of growing season of this area,and its relationship with temperature were analyzed under the background of global warming.Result showed that the average temperature for spring,autumn and March to November in Northeast China exhibited a rapid upward trend between 1959 and 2008,and their temporal variation characteristics were similar: the average temperature fluctuated around multi-year average value before 1987,while it showed a rapidly increasing trend after 1987.During the entire period,the start of the climate growing season shifted 5.6 days earlier in Northeast China,with a higher rate of change in western region;while the end of the climate growing season shifted 5.4 days later,with a higher rate of change in central area than in southern and northern areas;the length of growing season increased 11 days;the accumulated growing degree-days increased 268.7 ℃·d.During 1959-2008,the start of growing season advanced,the end date of growing season delayed,the length of growing season lengthened,and the accumulated growing degree-days increased,but the tendencies slowed down in late 1990s.The accumulated growing degree-days and length of growing season were highly positively correlated with the average temperature for March to November,and the correlation for the accumulated growing degree-days was always closer than that for the length of growing season.The change in the start date of growing season appeared to have a greater infiuence on the length of growing season. |
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| Keywords: | Three provinces in Northeast China Climate growing season Accumulated growing degree-days Climate tendency rate |
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