Spatiotemporal Variability and Driving Factors of Tibetan Plateau Water Use Efficiency
文献类型：期刊论文
| 作者 | Lin, Shan1,3; Wang, Genxu2; Hu, Zhaoyong2,3; Huang, Kewei1,3; Sun, Juying1,3; Sun, Xiangyang2 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
 |
| 出版日期 | 2020 |
| 卷号 | 125期号:22页码:e2020JD032642 |
| 关键词 | water use efficiency environmental impacts Tibetan Plateau land surface modeling |
| ISSN号 | 2169-897X |
| DOI | 10.1029/2020JD032642 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Water use efficiency (WUE) provides vital information about the carbon-water coupling relationship of a terrestrial ecosystem. Understanding the spatiotemporal variability and driving factors of the Tibetan Plateau (TP) WUE can facilitate the prediction of the response of the carbon-water process in the TP to climate change. We used a land surface model to investigate spatiotemporal changes in WUE and the responses to environmental factors, such as atmospheric CO2 concentration and climate and land use change. Our results suggest that the average annual TP WUE was 0.38 g C kg(-1) H2O and that this variable tended to increase at a rate of 0.001 g C kg(-1) H2O year(-1) during the period of 1979-2010. Changes in atmospheric CO2 concentration caused a significant increase in the rate of WUE change (i.e., 0.00051 g C kg(-1) H2O year(-1)); these changes were also found to most significantly contribute to WUE increase in the TP and account for approximately 51% of the WUE fluctuation. Increasing temperature was found to result in a decreasing WUE (rate: -0.00028 g C kg(-1) H2O year(-1)). Regarding results on vegetation type, forested areas had the highest WUE (i.e., 0.88 g C kg(-1) H2O) and the highest rate of WUE change (i.e., 0.004 g C kg(-1) H2O year(-1)), whereas the lowest WUE (i.e., 0.26 g C kg(-1) H2O) was found in steppe and alpine vegetation areas. Although all other vegetation types were associated with increasing WUE, there was no significant change in the WUE of steppe areas. The main factors influencing WUE fluctuation for different vegetation types were found to be atmospheric CO2 concentration and temperature change. |
| 电子版国际标准刊号 | 2169-8996 |
| 语种 | 英语 |
| WOS记录号 | WOS:000595725700013 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/54929]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 通讯作者 | Wang, Genxu; Hu, Zhaoyong |
| 作者单位 | 1.University of Chinese Academy of Sciences, Beijing, China; 2.State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Chengdu, China 3.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China; |
| 推荐引用方式 GB/T 7714 | Lin, Shan,Wang, Genxu,Hu, Zhaoyong,et al. Spatiotemporal Variability and Driving Factors of Tibetan Plateau Water Use Efficiency[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(22):e2020JD032642. |
| APA | Lin, Shan,Wang, Genxu,Hu, Zhaoyong,Huang, Kewei,Sun, Juying,&Sun, Xiangyang.(2020).Spatiotemporal Variability and Driving Factors of Tibetan Plateau Water Use Efficiency.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(22),e2020JD032642. |
| MLA | Lin, Shan,et al."Spatiotemporal Variability and Driving Factors of Tibetan Plateau Water Use Efficiency".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.22(2020):e2020JD032642. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。