| THE IMPACT OF CLIMATE CHANGE ON WATER DEFICIT AND PRODUCTION OF WINTER WHEAT IN NORTH CHINA |
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| 作者姓名： | Wang Shili Lou Xiurong |
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| 作者单位： | Chinese Academy of Meteorological Sciences Beijing 100081，Chinese Academy of Meteorological Sciences，Beijing 100081 |
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| 摘 要： | The water deficits in different development stages and the whole growing season of winterwheat in North China under climate change scenarios are analyzed based on the meteorological da-ta,crop phenomenon and soil hydrological data of 30 weather stations.The results show that ifthe temperature rises,the potential evapotranspiration and crop maximum transpiration will in-crease 8%-10%;the actual evapotranspiration in whole growing season will increase about 1%-2%;and it seems to decrease in spring.Therefore the water deficit status would deteriorate.Theamount of water deficit in whole growing season would increase 14%-30%,and the water deficitisolines might shift southward with maximum shift distance being 190 km.As a result the climaticsuitability of winter wheat would change,and the variation rate of yield reduction will be 8%-20% of the present value which results in the declining output values.The irrigation amountwould increase 25%-33%,and the agriculture cost might increase owing to additional irrigation.
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| 收稿时间： | 1995/7/17 0:00:00 |
| 修稿时间： | 1995/9/26 0:00:00 |
THE IMPACT OF CLIMATE CHANGE ON WATER DEFICIT AND PRODUCTION OF WINTER WHEAT IN NORTH CHINA |
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| Wang Shili,Lou Xiurong.THE IMPACT OF CLIMATE CHANGE ON WATER DEFICIT AND PRODUCTION OF WINTER WHEAT IN NORTH CHINA[J].Acta Meteorologica Sinica,1996,10(3):356-366. |
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| Authors: | Wang Shili and Lou Xiurong |
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| Institution: | Wang Shili Lou Xiurong Chinese Academy of Meteorological Sciences,Beijing 100081 |
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| Abstract: | The water deficits in different development stages and the whole growing season of winter wheat in North China under climate change scenarios are analyzed based on the meteorological da- ta,crop phenomenon and soil hydrological data of 30 weather stations.The results show that if the temperature rises,the potential evapotranspiration and crop maximum transpiration will in- crease 8%-10%;the actual evapotranspiration in whole growing season will increase about 1%- 2%;and it seems to decrease in spring.Therefore the water deficit status would deteriorate.The amount of water deficit in whole growing season would increase 14%-30%,and the water deficit isolines might shift southward with maximum shift distance being 190 km.As a result the climatic suitability of winter wheat would change,and the variation rate of yield reduction will be 8%- 20% of the present value which results in the declining output values.The irrigation amount would increase 25%-33%,and the agriculture cost might increase owing to additional irrigation. |
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| Keywords: | climate change impacts water deficit winter wheat |
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