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Journal of Geographical Sciences  2013, Vol. 23 Issue (2): 195-207    DOI: 10.1007/s11442-013-1003-0
  Research Articles 本期目录 | 过刊浏览 | 高级检索 |
Modeled effects of climate change on actual evapotranspiration in different eco-geographical regions in the Tibetan Plateau
YIN Yunhe, WU Shaohong, ZHAO Dongsheng, ZHENG Du, PAN Tao
Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China
Modeled effects of climate change on actual evapotranspiration in different eco-geographical regions in the Tibetan Plateau
YIN Yunhe, WU Shaohong, ZHAO Dongsheng, ZHENG Du, PAN Tao
Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China
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摘要 

From 1981 to 2010,the effects of climate change on evapotranspiration of the alpine ecosystem and the regional difference of effects in the Tibetan Plateau(TP)were studied based on the Lund-Potsdam-Jena dynamic vegetation model and data from 80 meteorological stations.Changes in actual evapotranspiration(AET)and water balance in TP were analyzed.Over the last 30 years,climate change in TP was characterized by sig- nificantly increased temperature,slightly increased precipitation,and decreased potential evapotranspiration(PET),which was significant before 2000.AET exhibited increasing trends in most parts of TP.The difference between precipitation and AET decreased in the south- eastern plateau and increased in the northwestern plateau.A decrease in atmospheric water demand will lead to a decreased trend in AET.However,AET in most regions increased be- cause of increased precipitation.Increased precipitation was observed in 86%of the areas with increased AET,whereas decreased precipitation was observed in 73%of the areas with decreased AET.

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Abstract

From 1981 to 2010,the effects of climate change on evapotranspiration of the alpine ecosystem and the regional difference of effects in the Tibetan Plateau(TP)were studied based on the Lund-Potsdam-Jena dynamic vegetation model and data from 80 meteorological stations.Changes in actual evapotranspiration(AET)and water balance in TP were analyzed.Over the last 30 years,climate change in TP was characterized by sig- nificantly increased temperature,slightly increased precipitation,and decreased potential evapotranspiration(PET),which was significant before 2000.AET exhibited increasing trends in most parts of TP.The difference between precipitation and AET decreased in the south- eastern plateau and increased in the northwestern plateau.A decrease in atmospheric water demand will lead to a decreased trend in AET.However,AET in most regions increased be- cause of increased precipitation.Increased precipitation was observed in 86%of the areas with increased AET,whereas decreased precipitation was observed in 73%of the areas with decreased AET.

Key wordsevapotranspiration    LPJ model    climate change    Tibetan Plateau
收稿日期: 2012-09-18     
基金资助:

The "Strategic Priority Research Program" of the Chinese Academy of Sciences,No.XDA05090304;Project for Public Service from Ministry of Environmental Protection of China,No.201009056;National Key Technology Research and Development Program,No.2009BAC61B05

作者简介: Yin Yunhe,Ph.D and Associate Professor,specialized in water and energy balance in land surface system and climate change.E-mail:yinyh@igsnrr.ac.cn
引用本文:   
YIN Yunhe, WU Shaohong, ZHAO Dongsheng, ZHENG Du, PAN Tao. Modeled effects of climate change on actual evapotranspiration in different eco-geographical regions in the Tibetan Plateau[J]. Journal of Geographical Sciences, 2013, 23(2): 195-207.
YIN Yunhe, WU Shaohong, ZHAO Dongsheng, ZHENG Du, PAN Tao. Modeled effects of climate change on actual evapotranspiration in different eco-geographical regions in the Tibetan Plateau. Journal of Geographical Sciences, 2013, 23(2): 195-207.
链接本文:  
http://www.geogsci.com/CN/10.1007/s11442-013-1003-0      或      http://www.geogsci.com/CN/Y2013/V23/I2/195


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