Integrated soil moisture fusion for enhanced agricultural drought monitoring in China
文献类型：期刊论文
| 作者 | Lv, Aifeng3,4; Yang, Xianglei1,2; Zhang, Wenxiang1,2; Han, Yan3,4 |
| 刊名 | AGRICULTURAL WATER MANAGEMENT
 |
| 出版日期 | 2025-04-30 |
| 卷号 | 311页码:109401 |
| 关键词 | Data fusion Triple collocation Soil moisture Spatiotemporal analysis Drought monitoring |
| ISSN号 | 0378-3774 |
| DOI | 10.1016/j.agwat.2025.109401 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Frequent drought events have a profound impact on the natural environment and socio-economics. Therefore, accurate drought monitoring is essential to prevent and minimize drought losses. In this study, we developed an improved soil moisture dataset (Merged-SM) by using Triple Collocation (TC) and Linear Weight Fusion (LWF) methods to fuse soil moisture data from ERA5-Land, ESA CCI, and MERRA-2. The dataset was validated against in-situ data and applied to investigate the spatiotemporal dynamics of agricultural droughts across China. Results show that (1) Merged-SM exhibits superior accuracy and spatial coverage in comparison to individual datasets, achieving a higher correlation with in-situ data (R = 0.573) and a reduced unbiased root mean square error (ubRMSE = 0.027-0.047). (2) The Merged-SM accurately identified the onset, duration, and spatial extent of agricultural drought events, showing a significant negative correlation with agricultural disaster area (R =-0.418, P = 0.006). (3) Temporally, agricultural droughts across most regions of China displayed stable or alleviating trends, with particularly notable relief observed in Region VI. Spatially, 58.25 % of China's territory experienced a decrease in drought intensity, especially in the Qinghai-Tibetan Plateau, North China Plain, and southern regions, while certain areas in northern and southwestern China recorded an intensification of drought conditions. (4) The correlation between meteorological drought and agricultural drought was found to be stronger during the summer (R = 0.68) and autumn (R = 0.63) compared to winter and spring. The propagation time from meteorological drought to agricultural drought varied seasonally, being shortest in summer (2.54 months) and longest in winter (6.54 months). These findings highlight the potential of the Merged-SM dataset for improving agricultural drought monitoring and provide critical insights into the spatiotemporal dynamics and propagation mechanisms of droughts in China. |
| URL标识 | 查看原文 |
| WOS关键词 | CLIMATE-CHANGE ; HYDROLOGICAL DROUGHTS ; SATELLITE ; VARIABILITY ; SEVERITY |
| WOS研究方向 | Agriculture ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001437536700001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/213313]  |
| 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 | Zhang, Wenxiang; Han, Yan |
| 作者单位 | 1.Yunnan Normal Univ, Kunming 650500, Peoples R China 2.Yunnan Normal Univ, Fac Geog, Key Lab Plateau Geog Proc & Environm Change Yunnan, Kunming 650500, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100101, Peoples R China; 4.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Lv, Aifeng,Yang, Xianglei,Zhang, Wenxiang,et al. Integrated soil moisture fusion for enhanced agricultural drought monitoring in China[J]. AGRICULTURAL WATER MANAGEMENT,2025,311:109401. |
| APA | Lv, Aifeng,Yang, Xianglei,Zhang, Wenxiang,&Han, Yan.(2025).Integrated soil moisture fusion for enhanced agricultural drought monitoring in China.AGRICULTURAL WATER MANAGEMENT,311,109401. |
| MLA | Lv, Aifeng,et al."Integrated soil moisture fusion for enhanced agricultural drought monitoring in China".AGRICULTURAL WATER MANAGEMENT 311(2025):109401. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。