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The negative-positive feedback transition thresholds of meteorological drought in response to agricultural drought and their dynamics

文献类型：期刊论文

作者Wei, Xiaoting3; Huang, Shengzhi3; Li, Jianfeng2; Huang, Qiang3; Leng, Guoyong1; Liu, Dong3; Guo, Wenwen3; Zheng, Xudong3; Bai, Qingjun3
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2024
卷号906页码:15
ISSN号0048-9697
关键词Feedback relationship Transition threshold Agricultural drought Meteorological drought Positive feedback
DOI10.1016/j.scitotenv.2023.167817
通讯作者Huang, Shengzhi(huangshengzhi7788@126.com)
英文摘要There are complex bidirectional feedback relationships among different types of droughts (e.g., meteorological and agricultural droughts). As agricultural drought intensifies, meteorological drought response to agricultural drought may be changed from negative to positive feedback. Nevertheless, the negative-positive feedback transition thresholds of meteorological drought in response to agricultural drought and their dynamics have remained unsolved. Herein, we proposed a new quantitative method to characterize the mutual feedback between meteorological drought and agricultural drought based on the vine copula function for the first time in this study. The negative-positive feedback transition threshold and the sensitivity of the feedback were quantified under certain drought conditions. In order to investigate the feedback relationship dynamics under a changing environment, the total study period was evenly divided into two stages: stage 1 (1982-1999) and stage 2 (2000-2018). Finally, the random forest method was used to explore the dominant factors on the transition threshold. Results indicate that: (1) the negative-positive feedback transition thresholds in August is generally lower than June and July in mainland China, the basin with large threshold is the Southwest River Basin; (2) the sensitivity of meteorological drought in response to agricultural drought was higher in positive feedback than in negative feedback; (3) the transition thresholds of stage 2 was mostly reduced, while the feedback sensitivity of positive feedback was mostly increased; and (4) compared with the single factor, the land-meteorological coupling strength (the correlation between precipitation and soil moisture) dominants the negative-positive feedback transition threshold. This study sheds new insights into droughts feedback.
WOS关键词ATMOSPHERE COUPLING STRENGTH ; PAIR-COPULA CONSTRUCTIONS ; SOIL-MOISTURE ; RIVER-BASIN ; HYDROLOGICAL DROUGHTS ; UNITED-STATES ; CLIMATE-CHANGE ; PRECIPITATION ; MODEL ; EVAPOTRANSPIRATION
资助项目National Natural Science Foundation of China[52279026] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA28060100] ; National Key Research and Development Program of China[2021YFC3000203] ; Doctoral Dissertation Innovation Fund of Xi'an University of Technology[2021ZD12] ; Natural Science Foundation of Inner Mongolia Autonomous Region ; [310-252072210]
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者ELSEVIER
WOS记录号WOS:001102861200001
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key Research and Development Program of China ; Doctoral Dissertation Innovation Fund of Xi'an University of Technology ; Natural Science Foundation of Inner Mongolia Autonomous Region
源URL[http://ir.igsnrr.ac.cn/handle/311030/200173]  
专题中国科学院地理科学与资源研究所
通讯作者Huang, Shengzhi
作者单位1.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Hong Kong Baptist Univ, Dept Geog, Kowloon Tong, Baptist Univ Rd, Hong Kong, Peoples R China
3.Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg China, Xian 710048, Peoples R China
推荐引用方式
GB/T 7714		 Wei, Xiaoting,Huang, Shengzhi,Li, Jianfeng,et al. The negative-positive feedback transition thresholds of meteorological drought in response to agricultural drought and their dynamics[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,906:15.
APA Wei, Xiaoting.,Huang, Shengzhi.,Li, Jianfeng.,Huang, Qiang.,Leng, Guoyong.,...&Bai, Qingjun.(2024).The negative-positive feedback transition thresholds of meteorological drought in response to agricultural drought and their dynamics.SCIENCE OF THE TOTAL ENVIRONMENT,906,15.
MLA Wei, Xiaoting,et al."The negative-positive feedback transition thresholds of meteorological drought in response to agricultural drought and their dynamics".SCIENCE OF THE TOTAL ENVIRONMENT 906(2024):15.

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来源：地理科学与资源研究所

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