Responses of global terrestrial water use efficiency to climate change and rising atmospheric CO2 concentration in the twenty-first century
Terrestrial ecosystems play a significant role in global carbon and water cycles because of the substantial amount of carbon assimilated through net primary production and large amount of water loss through evapotranspiration (ET). Using a process-based ecosystem model, we investigate the potential...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2018-06-01
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| Series: | International Journal of Digital Earth |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/17538947.2017.1337818 |
| _version_ | 1797678609149722624 |
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| author | Shufen Pan Guangsheng Chen Wei Ren Shree R. S. Dangal Kamaljit Banger Jia Yang Bo Tao Hanqin Tian |
| author_facet | Shufen Pan Guangsheng Chen Wei Ren Shree R. S. Dangal Kamaljit Banger Jia Yang Bo Tao Hanqin Tian |
| author_sort | Shufen Pan |
| collection | DOAJ |
| description | Terrestrial ecosystems play a significant role in global carbon and water cycles because of the substantial amount of carbon assimilated through net primary production and large amount of water loss through evapotranspiration (ET). Using a process-based ecosystem model, we investigate the potential effects of climate change and rising atmospheric CO2 concentration on global terrestrial ecosystem water use efficiency (WUE) during the twenty-first century. Future climate change would reduce global WUE by 16.3% under high-emission climate change scenario (A2) and 2.2% under low-emission climate scenario (B1) during 2010–2099. However, the combination of rising atmospheric CO2 concentration and climate change would increase global WUE by 7.9% and 9.4% under A2 and B1 climate scenarios, respectively. This suggests that rising atmospheric CO2 concentration could ameliorate climate change-induced WUE decline. Future WUE would increase significantly at the high-latitude regions but decrease at the low-latitude regions under combined changes in climate and atmospheric CO2. The largest increase of WUE would occur in tundra and boreal needleleaf deciduous forest under the combined A2 climate and atmospheric CO2 scenario. More accurate prediction of WUE requires deeper understanding on the responses of ET to rising atmospheric CO2 concentrations and its interactions with climate. |
| first_indexed | 2024-03-11T23:02:22Z |
| format | Article |
| id | doaj.art-3889f1908e744a1b979ba90a6538844e |
| institution | Directory Open Access Journal |
| issn | 1753-8947 1753-8955 |
| language | English |
| last_indexed | 2024-03-11T23:02:22Z |
| publishDate | 2018-06-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | International Journal of Digital Earth |
| spelling | doaj.art-3889f1908e744a1b979ba90a6538844e2023-09-21T14:38:05ZengTaylor & Francis GroupInternational Journal of Digital Earth1753-89471753-89552018-06-0111655858210.1080/17538947.2017.13378181337818Responses of global terrestrial water use efficiency to climate change and rising atmospheric CO2 concentration in the twenty-first centuryShufen Pan0Guangsheng Chen1Wei Ren2Shree R. S. Dangal3Kamaljit Banger4Jia Yang5Bo Tao6Hanqin Tian7Auburn UniversityAuburn UniversityAuburn UniversityAuburn UniversityAuburn UniversityAuburn UniversityAuburn UniversityAuburn UniversityTerrestrial ecosystems play a significant role in global carbon and water cycles because of the substantial amount of carbon assimilated through net primary production and large amount of water loss through evapotranspiration (ET). Using a process-based ecosystem model, we investigate the potential effects of climate change and rising atmospheric CO2 concentration on global terrestrial ecosystem water use efficiency (WUE) during the twenty-first century. Future climate change would reduce global WUE by 16.3% under high-emission climate change scenario (A2) and 2.2% under low-emission climate scenario (B1) during 2010–2099. However, the combination of rising atmospheric CO2 concentration and climate change would increase global WUE by 7.9% and 9.4% under A2 and B1 climate scenarios, respectively. This suggests that rising atmospheric CO2 concentration could ameliorate climate change-induced WUE decline. Future WUE would increase significantly at the high-latitude regions but decrease at the low-latitude regions under combined changes in climate and atmospheric CO2. The largest increase of WUE would occur in tundra and boreal needleleaf deciduous forest under the combined A2 climate and atmospheric CO2 scenario. More accurate prediction of WUE requires deeper understanding on the responses of ET to rising atmospheric CO2 concentrations and its interactions with climate.http://dx.doi.org/10.1080/17538947.2017.1337818climate changeevapotranspirationnet primary productivitywater use efficiency |
| spellingShingle | Shufen Pan Guangsheng Chen Wei Ren Shree R. S. Dangal Kamaljit Banger Jia Yang Bo Tao Hanqin Tian Responses of global terrestrial water use efficiency to climate change and rising atmospheric CO2 concentration in the twenty-first century International Journal of Digital Earth climate change evapotranspiration net primary productivity water use efficiency |
| title | Responses of global terrestrial water use efficiency to climate change and rising atmospheric CO2 concentration in the twenty-first century |
| title_full | Responses of global terrestrial water use efficiency to climate change and rising atmospheric CO2 concentration in the twenty-first century |
| title_fullStr | Responses of global terrestrial water use efficiency to climate change and rising atmospheric CO2 concentration in the twenty-first century |
| title_full_unstemmed | Responses of global terrestrial water use efficiency to climate change and rising atmospheric CO2 concentration in the twenty-first century |
| title_short | Responses of global terrestrial water use efficiency to climate change and rising atmospheric CO2 concentration in the twenty-first century |
| title_sort | responses of global terrestrial water use efficiency to climate change and rising atmospheric co2 concentration in the twenty first century |
| topic | climate change evapotranspiration net primary productivity water use efficiency |
| url | http://dx.doi.org/10.1080/17538947.2017.1337818 |
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