Global quantification of the bidirectional dependency between soil moisture and vegetation productivity
文献类型：期刊论文
| 作者 | Zhang, Wenmin; Wei, Fangli ; Horion, Stephanie; Fensholt, Rasmus; Forkel, Matthias; Brandt, Martin
|
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2022-02-15 |
| 卷号 | 313期号:0页码:108735 |
| 关键词 | CLIMATE-CHANGE LOESS PLATEAU CHINA KARST FEEDBACKS DROUGHT EARTH ATMOSPHERE CAUSALITY DRIVEN |
| ISSN号 | 0168-1923 |
| 英文摘要 | Changes in soil moisture strongly affect vegetation growth, which may in turn feed back on soil moisture by directly affecting evapotranspiration and indirectly regulating precipitation. Previous studies often focused on the unidirectional effects of soil moisture on temporal vegetation dynamics, yet bidirectional dependencies have rarely been studied. Here we analyzed the bidirectional dependency between soil moisture and vegetation productivity during 2001-2020 at a global scale using the Granger causality, and revealed strong concurrent and lagged correlations between both variables in large areas globally. Bidirectional causality between soil moisture and vegetation productivity was identified over 66% of the vegetated land areas, while considering lagged effects and controlling for temperature and solar radiation. Unidirectional effects of vegetation productivity on soil moisture, and soil moisture on vegetation productivity, were observed for 22% and 12% of vegetated land areas, respectively. For areas characterized by uni- and bidirectional dependencies, 74% of the vegetation productivity and 48% of soil moisture could be explained by optimum lag models. Finally, we observed increases in both vegetation productivity and soil moisture in 44% of the vegetated land areas, yet 36% showed an increase in vegetation productivity but a decrease in soil moisture, indicating divergent responses between greening and water availability. Identification of areas showing Granger causality between soil moisture and vegetation productivity is important for our understanding of carbon-water interactions for terrestrial ecosystems under climate change and for improving sustainable management of ecosystem services linked to the carbon-water cycle. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47267]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 通讯作者 | Zhang, Wenmin |
| 作者单位 | 1.Univ Copenhagen, Dept Geosci & Nat Resource Management, Copenhagen, Denmark 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 3.Tech Univ Dresden, Inst Photogrammetry & Remote Sensing, Fac Environm Sci, D-01069 Dresden, Germany |
| 推荐引用方式 GB/T 7714 | Zhang, Wenmin,Wei, Fangli,Horion, Stephanie,et al. Global quantification of the bidirectional dependency between soil moisture and vegetation productivity[J]. AGRICULTURAL AND FOREST METEOROLOGY,2022,313(0):108735. |
| APA | Zhang, Wenmin,Wei, Fangli,Horion, Stephanie,Fensholt, Rasmus,Forkel, Matthias,&Brandt, Martin.(2022).Global quantification of the bidirectional dependency between soil moisture and vegetation productivity.AGRICULTURAL AND FOREST METEOROLOGY,313(0),108735. |
| MLA | Zhang, Wenmin,et al."Global quantification of the bidirectional dependency between soil moisture and vegetation productivity".AGRICULTURAL AND FOREST METEOROLOGY 313.0(2022):108735. |
入库方式： OAI收割
来源：生态环境研究中心
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