Variations in Global Soil Moisture During the Past Decades: Climate or Human Causes?
文献类型：期刊论文
| 作者 | Liu, Yangxiaoyue; Yang, Yaping; Song, Jia |
| 刊名 | WATER RESOURCES RESEARCH
 |
| 出版日期 | 2023-07-01 |
| 卷号 | 59期号:7页码:e2023WR034915 |
| 关键词 | soil moisture spatial-temporal variation attribution analysis climatic causes human causes |
| ISSN号 | 0043-1397 |
| DOI | 10.1029/2023WR034915 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | As a sensitive climate change indicator, global multi-depth soil moisture (SM) has undergone great variation due to warming trends during the past decades. Here, we investigate the evolutionary pattern of SM and then carry out an attribution analysis from climate and human perspectives. The results reveal an unbalanced surface and rootzone variation trend during 1980-2020. The surface soil had approximately equal proportions of drying and wetting. Nonetheless, the percentage of the wetting region is significantly higher than that of the drying region for rootzone soil. The significantly drying region is mainly distributed in habitable areas, while the remarkably wetting region is usually located in the harsh climate and tropical humid zones. According to the attribution analysis using the Feature Importance Index of the Random Forest model, Pearson correlation coefficient, Maximum information coefficient, Spearman rank correlation coefficient, and Granger causality with 99% statistical significance, both climatic and human factors presented significant impacts on SM. Specifically, air temperature and evaporation are thought to be the primary climatic factors affecting the seasonal and long-term variability of SM, respectively. Irrigation water withdrawal is regarded as the dominant driving force of SM variation among six human water withdrawals, and domestic and electricity water withdrawals play indispensable roles in SM fluctuation. Additionally, SM also provides profound feedbacks on climatic factors and human water withdrawals. The global spatial-temporal SM variation along with warming temperatures could seriously risk food security and sustainable development, which needs to be addressed. |
| WOS关键词 | ERA-INTERIM ; WATER-USE ; TEMPERATURE ; VEGETATION ; MODEL ; MODIS ; PRECIPITATION ; REANALYSIS ; EMISSIONS ; SATELLITE |
| WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001042091400001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/194570]  |
| 专题 | 资源与环境信息系统国家重点实验室_外文论文 |
| 作者单位 | 1.Institute of Geographic Sciences & Natural Resources Research, CAS 2.Chinese Academy of Sciences |
| 推荐引用方式 GB/T 7714 | Liu, Yangxiaoyue,Yang, Yaping,Song, Jia. Variations in Global Soil Moisture During the Past Decades: Climate or Human Causes?[J]. WATER RESOURCES RESEARCH,2023,59(7):e2023WR034915. |
| APA | Liu, Yangxiaoyue,Yang, Yaping,&Song, Jia.(2023).Variations in Global Soil Moisture During the Past Decades: Climate or Human Causes?.WATER RESOURCES RESEARCH,59(7),e2023WR034915. |
| MLA | Liu, Yangxiaoyue,et al."Variations in Global Soil Moisture During the Past Decades: Climate or Human Causes?".WATER RESOURCES RESEARCH 59.7(2023):e2023WR034915. |
入库方式： OAI收割
来源：地理科学与资源研究所
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