| Title | Green water appropriation of the cropland ecosystem in China |
| Authors | Ma, Weijing Wei, Feili Zhang, Jianpeng Karthe, Daniel Opp, Christian |
| Affiliation | Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China Philipps Univ Marburg, Fac Geog, D-35032 Marburg, Germany Peking Univ, Coll Urban & Environm Sci, Key Lab Earth Surface Proc, Minist Educ, Beijing 100871, Peoples R China Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Reg Sustainable Dev Modeling, Beijing 100101, Peoples R China Univ Chinese Acad Sci, Beijing 100049, Peoples R China United Nations Univ, Inst Integrated Management Matter Fluxes & Resour, D-01067 Dresden, Germany German Mongolian Inst Resources & Technol, Environm Engn Sect, Ulaanbaatar 12800, Mongolia Tech Univ Dresden, Fac Environm Sci, D-01069 Dresden, Germany |
| Keywords | FOOTPRINT REDUCTION RESOURCES BLUE AGRICULTURE AVAILABILITY CONSUMPTION IRRIGATION TRADE FLOWS |
| Issue Date | 1-Feb-2022 |
| Publisher | SCIENCE OF THE TOTAL ENVIRONMENT |
| Abstract | Despite the awareness that green water is the main source of water to produce food, studies on green water use in cropland ecosystems are still rather limited, and almost no research has so far explored the relationship be-tween green water utilization and socioeconomic development. In this study, with the help of CropWat 8.0, the green water footprint (GWF) of main crops in China was estimated from 1979 to 2016. On this basis, a novel concept, i.e., green water appropriation rate (GWar), was introduced to reveal the relationship between GWF and precipitation. Then, for the first time, the center of gravity trajectory of the GWar and the correlation between GWar and socioeconomic factors were further investigated. The results show that the provinces with the largest increases of GWF were Inner Mongolia (223%), Xinjiang (127%), and Ningxia (123%), while the GWF of 11 provinces has decreased, and 9 of them were municipalities or coastal areas. Generally, the GWar in the eastern and central provinces was higher than that in the western provinces. The center of gravity of the GWar has always been in Henan Province, but it has moved westward from Kaifeng City in 1979 to Sanmenxia City in 2016 and may further move to Shanxi Province soon. The total power of agricultural machinery and the effective irrigation rate had a positive correlation with the GWar, while the agricultural GDP was negatively cor-related with the GWar. It is expected that the results will explicitly provide a scientific basis for the development of water-appropriate agriculture and the full utilization of rainwater. (c) 2021 Elsevier B.V. All rights reserved. |
| URI | http://hdl.handle.net/20.500.11897/632057 |
| ISSN | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2021.150597 |
| Indexed | SCI(E) |
| Appears in Collections: | 城市与环境学院 地表过程分析与模拟教育部重点实验室 |
