| Impacts of climate change on wheat development and production in the northern China |
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| 作者姓名： | Gao Suhu Guo Jianping Pan Yaru |
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| 作者单位： | Gao Suhua，Guo Jianping an YaruChinese Academy of Meteorological Sciences，Beijing 100081，China |
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| 基金项目： | The programme of impacts of climate change on winter wheat production in the north and northwest of China was directed by Zhao Siqiang, and Wang Jianling and Pan Yaru took part in it; Huang Feng and Dong Yongxiang participated in the work on spring wheat. |
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| 摘 要： | In this paper, impacts of climate change on wheat development rate and production in the northern China are discussed. The results show that the temperature is a controlling factor of development rate but the precipitation is not. The higher the temperature is. the faster the development and the shorter development period will be. Without consideration to varieties and cropping system, meteorological yield of winter wheat would decrease 170.40, 134.25, 98.70 and 97.20 kg/hm2 in the north China and 13.97, 7.95, 39.60 and 19.80 kg/hm2 in the northwest China compared with that in 1950s, 1960s, 1970s and 1980s, respectively, when the CO2 concentration in the atmosphere is doubled. In drought and semi-drought regions, the spring wheat yield would drop with the temperature rise in and raise with the precipitation increase. The influence of temperature on weight of leaf and stalk is also remarkable.
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| 关 键 词： | climate change wheat development rate. |
| 收稿时间： | 1992/4/28 0:00:00 |
Impacts of climate change on wheat development and production in the northern China |
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| Gao Suhu,Guo Jianping,Pan Yaru.Impacts of climate change on wheat development and production in the northern China[J].Journal of Environmental Sciences,1993,5(2):176-185. |
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| Authors: | Gao Suhua Guo Jianping an YaruChinese Academy of Meteorological Sciences Beijing China |
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| Institution: | Gao Suhua,Guo Jianping an YaruChinese Academy of Meteorological Sciences,Beijing 100081,China |
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| Abstract: | In this paper, impacts of climate change on wheat development rate and production in the northern China are discussed. The results show that the temperature is a controlling factor of development rate but the precipitation is not. The higher the temperature is. the faster the development and the shorter development period will be. Without consideration to varieties and cropping system, meteorological yield of winter wheat would decrease 170.40, 134.25, 98.70 and 97.20 kg/hm2 in the north China and 13.97, 7.95, 39.60 and 19.80 kg/hm2 in the northwest China compared with that in 1950s, 1960s, 1970s and 1980s, respectively, when the CO2 concentration in the atmosphere is doubled. In drought and semi-drought regions, the spring wheat yield would drop with the temperature rise in and raise with the precipitation increase. The influence of temperature on weight of leaf and stalk is also remarkable. |
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| Keywords: | climate change wheat development rate |
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