违反了 PRIMARY KEY 约束 'PK_t_counter'。不能在对象 'dbo.t_counter' 中插入重复键。 语句已终止。 极端高温天气对玉米产量的影响及其与大气环流和海温的关系-The influence of heat stress on maize yield and its association with atmospheric general circulation and sea surface temperature
doi:  10.3878/j.issn.1006-9585.2016.16119
极端高温天气对玉米产量的影响及其与大气环流和海温的关系

The influence of heat stress on maize yield and its association with atmospheric general circulation and sea surface temperature
摘要点击 175  全文点击 108  投稿时间:2016-06-17  最后修改时间:2016-07-27
查看HTML全文   下载PDF   查看/发表评论  下载PDF阅读器
基金:  其它
中文关键词:  高温热害  玉米产量  统计模型  大气环流  海温  ENSO
英文关键词:  heat stress  maize yield  statistical model  general circulation  SST  ENSO
        
作者中文名作者英文名单位
周梦子Zhou Mengzi中国气象科学研究院
王会军Wang Huijun南京信息工程大学
霍志国Huo Zhiguo中国气象科学研究院
引用:周梦子,王会军,霍志国.2017.极端高温天气对玉米产量的影响及其与大气环流和海温的关系[J].气候与环境研究
Citation:Zhou Mengzi,Wang Huijun,Huo Zhiguo.2017.The influence of heat stress on maize yield and its association with atmospheric general circulation and sea surface temperature[J].Climatic and Environmental Research(in Chinese)
中文摘要:
      高温热害已成为玉米生长过程中的一个重要威胁。本文中,我们定量分析了省份尺度上夏季极端高温日数对玉米产量的影响,结果表明在中国不同省份,当高温指数增加一个标准差时,玉米减产范围为?1.56%~?15.06%,其中以东北、华北地区减产更为严重。进一步分析表明,在90年代中后期东北、华北极端高温日数显著增加,发生突变。当东北、华北上空500hPa位势高度场出现正异常时,天气比较晴朗,入射太阳辐射增加,使得地面温度升高,有利于极端高温天气的出现;而风场上,东北地区尤其是黑龙江盛行西风,经向环流减弱,冷空气不易入侵,使得该区温度偏高,华北地区则以偏南风为主,来自中国内陆的温暖气流被带到该地,为极端高温天气的发生创造有利条件。影响东北极端高温天气的关键海域位于黑潮地区,而ENSO对华北极端高温日数的影响更大,当ENSO指数异常偏高时,西太平洋副热带高压偏东,华北水汽输送通道受阻,水汽辐散,且盛行下沉运动,华北地区易出现高温、干旱天气。
Abstract:
      Heat stress has posed a major threat in the process of maize growth. In this paper, we analyze the impact of summer extreme high temperature on maize yield at provincial scales in China. Results shows that in 18 provinces, the maize yield would decrease dramatically from ?1.56% to ?15.06% for each standard deviation increase in extreme high temperature days, especially for the Northeast China and North China. Further analysis indicates that both of extreme high temperature days in Northeast China and North China appear jump change in the mid to late 1990s. For Northeast China and North China, when overlying geopotential height anomaly at 500hPa is positive, the weather is clear which is conductive to the increase of solar radiation and then lead to high temperature. In lower wind field, the westerly prevails in the Northeast China especially in Heilongjiang province, and zonal circulation is intensified which blocks the invasion of cold air mass from high latitude; for North China, the temperature advection by the southerly wind is beneficial to extreme high temperature. The key sea region that has significant impact on extreme high temperature in Northeast China is the Kuroshio region, while the main region for North China is the eastern Pacific of Equater. The positive anomaly in this region would lead to an eastward displace of the western Pacific subtropical high, in association with poor supply of water vapor and intense downdraft, North China is prone to experience high temperature weather.
主办单位:中国科学院大气物理研究所 单位地址:北京市9804信箱
联系电话: 010-82995048,010-82995049传真:010-82995048 邮编:100029 Email:qhhj@mail.iap.ac.cn
本系统由北京勤云科技发展有限公司设计
京ICP备09060247号