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Global spatial and temporal dynamics of the green water coefficient and analysis of factor from 1992 to 2020

文献类型：期刊论文

作者Lu, Xiaoqi4; Zhu, Ke1,3,4; Zang, Chuanfu4; Dai, Miaolin4; Luo, Yiwen1,3,4; Qiu, Xintong2,4
刊名JOURNAL OF HYDROLOGY
出版日期2024-11-01
卷号644页码:12
关键词Green water Green water coefficients Land use Climate change Rainfed agriculture
ISSN号0022-1694
DOI10.1016/j.jhydrol.2024.132089
产权排序2
英文摘要In recent years, the impacts of climate change have variably affected the global ecological environment, exacerbating water scarcity and related issues. Meantime, as part of soil evapotranspiration and plant transpiration in water resources, green water is of great significance in stabilizing the global water cycle and promoting the sustainable development of agriculture. Therefore, the green water coefficient in this study calculates the conversion rate of precipitation to green water, which is important for the balance between blue and green water and the stability of the ecological environment. Based on trend analysis methods and Geodetector, this study analyses the spatial and temporal characteristics and driving mechanisms of the green water coefficient on the globe and on each land-use type from 1992 to 2020. The findings revealed that: (1) The global green water coefficient is clearly spatially differentiated, showing certain latitudinal distribution differences, with the lowest near the equator. The areas with higher green water coefficients are mainly in northern and southern Africa, central Asia, Oceania and northern and western North America, while the areas with lower green water coefficients are concentrated in northern South America and Southeast Asia. (2) The global average value of green water coefficient decreases before increasing. Except for water, the green water coefficient of other land use types (crop land, forest land, grassland, urban land, unused land) changes significantly and there are fewer abrupt change points. Areas where the green water coefficient is too low and changes drastically are not suitable for rainfed agriculture. (3) Different influential factors act on the green water coefficients of different land use types, and there is a two-factor enhancement and non-linear enhancement relationship between them, with a combination of factors affecting the green water coefficient. By studying the characteristics of the green water coefficient globally and across different land use types, we quantified the influence of climate factors such as precipitation, temperature, wind speed, evapotranspiration, radiation, etc., on the green water coefficient, thereby providing some information for future global rain-fed agriculture and water resources management.
WOS关键词BLUE WATER ; TERRESTRIAL EVAPOTRANSPIRATION ; CLIMATE-CHANGE ; RIVER-BASIN ; WIND-SPEED ; TEMPERATURE ; RESOURCES ; IMPACTS ; FLOWS ; RAINFALL
资助项目National Natural Science Foundation of China[42471026] ; Guangzhou Collaborative Innovation Center on Science: tech of Ecology and Landscape[202206010058] ; Guangdong Province Forestry Science and technology innovation project[2021-KJCX-003] ; Forestry ecological monitoring network platform construction[2023-KYXM-09] ; Forestry ecological monitoring network platform construction[2023-KYXM-09-004]
WOS研究方向Engineering ; Geology ; Water Resources
语种英语
WOS记录号WOS:001330180800001
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; Guangzhou Collaborative Innovation Center on Science: tech of Ecology and Landscape ; Guangdong Province Forestry Science and technology innovation project ; Forestry ecological monitoring network platform construction
源URL[http://ir.igsnrr.ac.cn/handle/311030/209935]  
专题陆地水循环及地表过程院重点实验室_外文论文
通讯作者Zang, Chuanfu
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Nanjing Normal Univ, Sch Geog, 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.South China Normal Univ, Sch Geog, Guangzhou 510631, Peoples R China
推荐引用方式
GB/T 7714		 Lu, Xiaoqi,Zhu, Ke,Zang, Chuanfu,et al. Global spatial and temporal dynamics of the green water coefficient and analysis of factor from 1992 to 2020[J]. JOURNAL OF HYDROLOGY,2024,644:12.
APA Lu, Xiaoqi,Zhu, Ke,Zang, Chuanfu,Dai, Miaolin,Luo, Yiwen,&Qiu, Xintong.(2024).Global spatial and temporal dynamics of the green water coefficient and analysis of factor from 1992 to 2020.JOURNAL OF HYDROLOGY,644,12.
MLA Lu, Xiaoqi,et al."Global spatial and temporal dynamics of the green water coefficient and analysis of factor from 1992 to 2020".JOURNAL OF HYDROLOGY 644(2024):12.

入库方式： OAI收割

来源：地理科学与资源研究所

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