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生态学杂志 ›› 2010, Vol. 29 ›› Issue (11): 2241-2248.

• 研究报告 • 上一篇    下一篇

1961—2008年华南地区极端气温的非对称变化

伍红雨**,杜尧东   

  1. 广东省气候中心,广州 510080
  • 出版日期:2010-11-08 发布日期:2010-11-08

Asymmetric changes of extreme temperature in South China in 1961-2008.

WU Hong-yu, DU Yao-dong   

  1. Climate Center of Guangdong Province, Guangzhou 510080, China
  • Online:2010-11-08 Published:2010-11-08

摘要: 选取华南110个测站1961—2008年逐日最高、最低气温资料,采用线性趋势分析、Mann-Kendall检验等方法,分析了华南年和季极端最高、最低气温的时空变化特征。结果表明:近48年华南年极端最高、最低气温均呈明显增温趋势,年极端最高、最低气温分别在2003年、1978年发生突变,极端最高、最低气温存在非对称性变化;年极端最低气温的线性增温速率(0.48 ℃·10 a-1)明显高于极端最高气温(0.20 ℃·10 a-1)的线性增温速率;华南极端最高、最低气温的四季变化存在明显差异,极端最高气温在春季增温明显,而极端最低气温在夏季、冬季增温明显;华南极端气温变化存在明显的地区差异,珠江三角洲、粤东南沿海和海南部分地区增温最明显,而在冬季,极端最高气温在广西西北部地区降温明显。

关键词: 黄瓜, 猝倒病, 生防细菌, 16SrDNA, 鉴定

Abstract: Based on the 1961-2008 daily maximum and minimum temperature data of 110 observational stations in South China, the spatiotemporal change characteristics of annual and seasonal extreme maximum and minimum temperature were studied by using linear regression analysis and Mann-Kendall test. In the recent 48 years in South China, the annual extreme maximum and minimum temperature had an obvious increasing trend, and had an abrupt change in 2003 and 1978, respectively. Asymmetric changes were observed in the annual extreme maximum and minimum temperature. The linear increasing rate of annual extreme minimum temperature (0.48 ℃·10 a-1) was obviously higher than that of annual extreme maximum temperature (0.20 ℃·10 a-1). An obvious difference was also found in the changes of extreme maximum and minimum temperature among four seasons. The extreme maximum temperature was upward obviously in spring, but the extreme minimum temperature was upward obviously in summer and winter. There were also obvious regional differences in the changes of extreme temperature. The increasing trend of extreme temperature was most obvious in the Pearl River Delta area, southeast coastal areas of Guangdong, and part of Hainan, while the decreasing trend of extreme maximum temperature was obvious in southwest areas of Guangxi in winter.

Key words: Identification, Biocontrol strain X3, 16S rDNA, Cucumber, Seedling damping-off