KMS Institute Of Geographic Sciences And Natural Resources Research,CAS
| Separating the effects of climate change and human activity on water use efficiency over the Beijing-Tianjin Sand Source Region of China | |
| Guo, Limai1,2; Shan, Nan1,2; Zhang, Yongguang1,2; Sun, Fubao3,4,5; Liu, Wenbin3; Shi, Zhongjie6; Zhang, Qian1,2 | |
| 2019-11-10 | |
| Source Publication | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| ISSN | 0048-9697 |
| Volume | 690Pages:584-595 |
| Corresponding Author | Shan, Nan(nshan@nju.edu.cn) |
| Abstract | Water use efficiency (WUE) is a central parameter for linking carbon and water exchange processes in terrestrial ecosystems. The Beijing-Tianjin Sand Source Region (BTSSR) in China has undergone tremendous vegetation restoration and climate change. Understanding the WUE responses to climate change and human activity and their relative contributions to the trends and inter-annual variations (IAVs) in WUE is necessary to improve water use efficiency and strengthen water resource management. The evapotranspiration (ET) dataset based on the model tree ensemble (MTE) algorithm which was a machine learning approach using flux-tower ET measurements and the GLASS GPP dataset, as well as the variance decomposition method, were used to analyze the spatiotemporal changes in water use efficiency and inherent water use efficiency (IWUE) and the impacts of climate change and human activities. The results showed that the annual WUE and IWUE exhibited significantly increase in most regions of the BTSSR. The trend of human activity played the most important role in the increases of WUE and IWUE, with relative contributions of 88.2% and 85.9%, respectively, followed by the IAV of human activity for WUE (6.1%) and the trend of climate change (8.7%) for IWUE. The contribution of IAV to climate change was relatively small. Moreover, WUE and IWUE were all positively correlated with precipitation and temperature in most regions. Our results indicated that ecological restoration projects had significantly improved water use efficiency in BTSSR and may decrease the water burden in the BTSSR. (C) 2019 Elsevier B.V. All rights reserved. |
| Keyword | Water use efficiency Relative contribution Climate change Human activity |
| DOI | 10.1016/j.scitotenv.2019.07.067 |
| WOS Keyword | CARBON-DIOXIDE ; ECOLOGICAL RESTORATION ; LOESS PLATEAU ; SPATIOTEMPORAL VARIATION ; PRECIPITATION GRADIENT ; VAPOR EXCHANGE ; LAND-COVER ; ECOSYSTEM ; EVAPOTRANSPIRATION ; RESOURCES |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | NSFC[41761134082] ; DFG[41761134082] ; Jiangsu Provincial Natural Science Fund for Distinguished Young Scholars of China[BK20170018] ; National Natural Science Foundation of China[41701482] ; National Natural Science Foundation of China[41701393] ; National Natural Science Foundation of China[31670715] ; China Postdoctoral Science Foundation[2017M621698] ; China Postdoctoral Science Foundation[2018T110477] ; National Key Research and Development Program of China[2016YFC0401401] |
| Funding Organization | NSFC ; DFG ; Jiangsu Provincial Natural Science Fund for Distinguished Young Scholars of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; National Key Research and Development Program of China |
| WOS Research Area | Environmental Sciences & Ecology |
| WOS Subject | Environmental Sciences |
| WOS ID | WOS:000482549900055 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.igsnrr.ac.cn/handle/311030/69744 |
| Collection | 中国科学院地理科学与资源研究所 |
| Corresponding Author | Shan, Nan |
| Affiliation | 1.Nanjing Univ, Int Inst Earth Syst Sci, Jiangsu Prov Key Lab Geog Informat Sci & Technol, Nanjing 210023, Jiangsu, Peoples R China 2.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing 210023, Jiangsu, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 101408, Peoples R China 5.Chinese Acad Sci, Ctr Water Resources Res, Beijing 1001018, Peoples R China 6.Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China |
| Recommended Citation GB/T 7714 | Guo, Limai,Shan, Nan,Zhang, Yongguang,et al. Separating the effects of climate change and human activity on water use efficiency over the Beijing-Tianjin Sand Source Region of China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,690:584-595. |
| APA | Guo, Limai.,Shan, Nan.,Zhang, Yongguang.,Sun, Fubao.,Liu, Wenbin.,...&Zhang, Qian.(2019).Separating the effects of climate change and human activity on water use efficiency over the Beijing-Tianjin Sand Source Region of China.SCIENCE OF THE TOTAL ENVIRONMENT,690,584-595. |
| MLA | Guo, Limai,et al."Separating the effects of climate change and human activity on water use efficiency over the Beijing-Tianjin Sand Source Region of China".SCIENCE OF THE TOTAL ENVIRONMENT 690(2019):584-595. |
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