Dense vegetation as a natural buffer: Mitigating and decelerating drought propagation
文献类型：期刊论文
| 作者 | Xiao, Linying1,2,5; Guo, Changqing3,4; Zheng, Chenghao1,2,5; Lu, Zichun1,2,5; Khan, Muhammad Anas1,2,5; Zhou, Jinxing1,2,5; Wu, Xiuqin1,2,5 |
| 刊名 | JOURNAL OF ENVIRONMENTAL MANAGEMENT
 |
| 出版日期 | 2025-08-01 |
| 卷号 | 389页码:126027 |
| 关键词 | Drought propagation Meteorological drought Soil drought NDVI Karst |
| ISSN号 | 0301-4797 |
| DOI | 10.1016/j.jenvman.2025.126027 |
| 产权排序 | 4 |
| 文献子类 | Article |
| 英文摘要 | Effective management of soil drought requires a comprehensive understanding of drought propagation dynamics, particularly in the context of increasing vegetation. This study investigates the relationship between meteorological and soil droughts in the Red River Basin (RRB), Southwest China, using monthly Standardized Precipitation Evapotranspiration Index (SPEI) and Soil Moisture Index (SMI) data from 2000 to 2021. A novel peak backtracking method was developed to quantify key propagation metrics: propagation time (PT), triggering threshold (TR), and propagation rate (PR). Granger causality analysis was applied to identify factors driving these dynamics. The key findings are as follows: (1) The average drought propagation rate in the RRB is 64.64 %, with a mean propagation time of 3.3 months and a triggering threshold of approximately-0.72. (2) Vegetation factors, particularly NDVI, are the dominant driver of changes in drought propagation characteristics, demonstrating stronger explanatory power than NPP. (3) Enhanced vegetation cover intensifies the decoupling between soil moisture and meteorological droughts, leading to slower propagation rates. High-vegetation areas experience a 13 % decrease in propagation rate and a 0.34-month increase in propagation time compared to low-vegetation areas. (4) The turning points in non-linear analysis results occurred at NDVI value of 0.419 and 0.514 respectively. Alleviation can only appear when the vegetation cover surpasses the turning point. These findings underscore the role of vegetation restoration in improving soil properties such as water retention and porosity, thereby mitigating drought propagation. They highlight the importance of afforestation and sustainable land management in reducing drought risks, particularly in ecologically sensitive regions like Southwest China. |
| URL标识 | 查看原文 |
| WOS关键词 | LOESS PLATEAU ; CHINA ; BALANCE ; GROWTH |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001566367500001 |
| 出版者 | ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/216062]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Zhou, Jinxing |
| 作者单位 | 1.Beijing Forestry Univ, Key Lab State Forestry Adm Soil & Water Conservat, Beijing 100083, Peoples R China; 2.Beijing Forestry Univ, Sch Soil & Water Conservat, Beijing 100083, Peoples R China; 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China; 5.Yunnan Jianshui Desert Ecosyst Natl Positioning Re, Jianshui 654399, Yunnan, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Xiao, Linying,Guo, Changqing,Zheng, Chenghao,et al. Dense vegetation as a natural buffer: Mitigating and decelerating drought propagation[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2025,389:126027. |
| APA | Xiao, Linying.,Guo, Changqing.,Zheng, Chenghao.,Lu, Zichun.,Khan, Muhammad Anas.,...&Wu, Xiuqin.(2025).Dense vegetation as a natural buffer: Mitigating and decelerating drought propagation.JOURNAL OF ENVIRONMENTAL MANAGEMENT,389,126027. |
| MLA | Xiao, Linying,et al."Dense vegetation as a natural buffer: Mitigating and decelerating drought propagation".JOURNAL OF ENVIRONMENTAL MANAGEMENT 389(2025):126027. |
入库方式： OAI收割
来源：地理科学与资源研究所
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