王雷,吴正方,杜海波,宗盛伟.1961—2010年东北地区四季开始日及长短变化特征分析.气象科学,,(): WANG Lei,WU Zhengfang,DU Haibo,ZONG Shengwei.Variation characteristics of the starting date and length of seasons over Northeast China during 1961 to 2010.Journal of the Meteorological Sciences,,():
1961—2010年东北地区四季开始日及长短变化特征分析
Variation characteristics of the starting date and length of seasons over Northeast China during 1961 to 2010
投稿时间:2012-12-24  修订日期:2013-03-10
DOI:10.3969/2013jms.0018
中文关键词:  四季开始日  四季长度  候温法
英文关键词:Starting dates of seasons  Length of seasons  Pentad mean temperature diagnostics
基金项目:国家自然科学基金资助项目(41171038);吉林省自然科学基金资助项目(20101561)
作者单位E-mail
王雷 东北师范大学 地理科学学院, 长春 130024  
吴正方 东北师范大学 地理科学学院, 长春 130024 wuzf@nenu.edu.cn 
杜海波 东北师范大学 地理科学学院, 长春 130024  
宗盛伟 东北师范大学 地理科学学院, 长春 130024  
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中文摘要:
      用1961—2010年东北地区90个气象观测站的地面观测资料,采用钱诚等四季划分的方法,分析了东北地区四季开始日、长短变化特征及其对农业的影响。研究表明:东北地区近50 a来,四季(春、夏、秋、冬)平均开始日分别为4月10日、6月25日、8月11日和10月20日,平均长度为80 d、51 d、72 d和171 d,且区域差异比较明显。春季和夏季的开始日在明显提前,分别为-1.46 d/10a、-1.99 d/10a;秋季和冬季的开始日明显推迟,分别为2.05 d/10a、0.90 d/10a。平均春、秋和冬季的持续时间在缩短,分别为-0.54 d/10a、-1.15 d/10a、-2.50d/10a,春、秋季的变化未通过显著性检验,冬季通过了0.05的显著性检验。夏季时间延长,为3.38 d/10a。春季的提前和秋季的推迟,使农作物适宜生育期延长;同时对作物品种熟性和种植格局也会产生一定的影响。
英文摘要:
      Using the recorded data from 90 meteorological stations over Northeast China during 1961—2010, the variation of starting date and length of seasons were analyzed and its effects on agriculture were discussed. The results showed that the average starting dates were April 10, June 25, August 11, October 20 and average length were 80 d, 51 d, 72 d, 171 d for spring, summer, autumn and winter respectively over Northeast China in the last 50 years, whose spatial variations were obvious. The starting dates of spring and summer became earlier clearly, with the trends of -1.46 d/10a and -1.99 d/10a respectively while autumn and winter's became later, with the values of 2.05 d/10a and 0.90 d/10a. The average length of spring, autumn, and winter became shorter, which were -0.54 d/10a, -1.15 d/10a and -2.50 d/10a respectively, while trends of spring and autumn were non-significant, whereas the variation trend of winter was significant at the 0.05 confidence level. The summer became longer, with the value of 3.38 d/10a. The early coming of starting date of spring advanced sowing time of the crops, while the delay of starting date of autumn prolonged the harvest. These changes extended the growing period of crops and had great effects on the crop varieties and planting pattern.
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