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Land use and climate change exacerbate the root zone maximum water deficit in the Loess Plateau

文献类型：期刊论文

作者Zhao, Zikun1; Gao, Hongkai2,3; Xi, Qiaojuan2,3; Wang, Yahui2,3; Jia, Xiaoxu4; Wu, Pute5,6; Zhuo, La5,6
刊名SCIENCE CHINA-EARTH SCIENCES
出版日期2025-06-06
卷号N/A
关键词Root zone maximum water deficit Root zone water storage capacity The Loess Plateau Land use change Compound effect Driving factors
ISSN号1674-7313
DOI10.1007/s11430-025-1583-9
产权排序4
文献子类Article ; Early Access
英文摘要Root zone maximum water deficit (S-Rmax) refers to the maximum water consumption of the root zone during drought, which directly influences the partitioning of precipitation between infiltration and runoff. It is a key parameter in land surface hydrological modeling. Since the implementation of the Grain-for-Green Project (GFG) on the Loess Plateau (LP), vegetation restoration has achieved significant success, resulting in the greening of LP while simultaneously reducing surface runoff. However, the lack of consideration for the root zone, a key link between terrestrial ecological and hydrological processes, has hindered understanding of ecohydrological mechanisms and limited comprehensive assessments of regional water resource management and ecological engineering outcomes. This study analyzes the spatiotemporal dynamic of S-Rmax on the LP from 1982 to 2018 using multi-source datasets and the Mass Curve Technique. Additionally, we employ a hybrid machine learning-statistical attribution model to quantify the contributions of land use and climate change to the S-Rmax dynamic. The results indicate an average S-Rmax of 85.3 mm across the LP, with significant variations among land use types: natural forest (116.3 mm) > planted forest (104.6 mm) > grassland (87.0 mm) > cropland (78.8 mm). Following the implementation of GFG, S-Rmax increased by 37.7%, with an upward trend observed across all land use types, particularly in changed land type, which experienced the largest increases. The attribution model achieved a coefficient of determination (R-2) of 0.92. The key factors driving S-Rmax variation varied by land use type: in unchanged land type, climate change accounted for 53.8% of the S-Rmax increase, whereas land use change explained 71.3% of the increase in changed land type, with GFG contributing 52.1%. These findings provide a scientific basis for enhancing drought resilience and implementing the Water-for-Greening strategy on the LP and similar regions under changing environmental conditions.
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WOS关键词STORAGE CAPACITY ; CHINA ; MOISTURE
WOS研究方向Geology
语种英语
WOS记录号WOS:001504309500001
出版者SCIENCE PRESS
源URL[http://ir.igsnrr.ac.cn/handle/311030/214539]  
专题黄河三角洲现代农业工程实验室_外文论文
通讯作者Gao, Hongkai; Zhuo, La
作者单位1.Northwest A&F Univ, Coll Water Resources & Architectural Engn, , Yangling, Yangling 712100, Peoples R China;
2.East China Normal Univ, Sch Geog Sci, Shanghai 200241, Peoples R China;
3.East China Normal Univ, Key Lab Geog Informat Sci, Minist Educ, Shanghai 200241, Peoples R China;
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Modern Agr Engn Lab, Beijing 100101, Peoples R China;
5.Northwest A&F Univ, Coll Soil & Water Conservat Sci & Engn, Yangling 712100, Peoples R China;
6.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Zikun,Gao, Hongkai,Xi, Qiaojuan,et al. Land use and climate change exacerbate the root zone maximum water deficit in the Loess Plateau[J]. SCIENCE CHINA-EARTH SCIENCES,2025,N/A.
APA Zhao, Zikun.,Gao, Hongkai.,Xi, Qiaojuan.,Wang, Yahui.,Jia, Xiaoxu.,...&Zhuo, La.(2025).Land use and climate change exacerbate the root zone maximum water deficit in the Loess Plateau.SCIENCE CHINA-EARTH SCIENCES,N/A.
MLA Zhao, Zikun,et al."Land use and climate change exacerbate the root zone maximum water deficit in the Loess Plateau".SCIENCE CHINA-EARTH SCIENCES N/A(2025).

入库方式： OAI收割

来源：地理科学与资源研究所

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