Multifaceted characteristics of aridity changes and causal mechanisms in Chinese drylands
文献类型：期刊论文
| 作者 | Hu, Ying; Wei, Fangli ; Fu, Bojie; Wang, Shuai; Wang, Lanhui; Chen, Yongzhe
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| 刊名 | PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT
 |
| 出版日期 | 2022 |
| 页码 | 3091333221129870-1-16 |
| 关键词 | Aridity vapor pressure deficit soil moisture causality convergent cross mapping |
| ISSN号 | 0309-1333 |
| 英文摘要 | The water cycle is accelerating in the context of global warming. However, how the multifaceted characteristics of aridity, particularly atmospheric, hydrological, and ecological drying, change and interact with each other are largely unknown. A gap we bridged was discovering the causal relationships underlying the atmosphere-hydrosphere-biosphere nexus from the nonlinear dynamic system perspective based on convergent cross mapping (CCM). Dryland area in China has expanded since 1982, while the vegetation greenness indicated by leaf area index has been increasing during the same period. The results showed that the causality among atmospheric, hydrological, and ecological drying in different subtypes of drylands was different. In arid and semi-arid regions: vegetation changes were mainly driven by soil moisture (SM) and vapor pressure deficit (VPD), and VPD regulated SM. In hyper-arid and dry sub-humid areas: VPD dominated vegetation changes. VPD increases did not contribute to SM loss under the intense water stress in hyper-arid regions, as the soil water supply cannot meet the atmospheric water demand. In dry sub-humid areas, human disturbances have attenuated the dependence of vegetation changes on SM variability. This research pioneers complex nonlinear dynamic analyses on the multifaceted characteristics of ecosystems, which can deepen our understanding of atmosphere-vegetation-soil interactions in drylands and guide the sustainable management of dryland ecosystems in China and elsewhere. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/48419]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 作者单位 | 1.Chinese Academy of Sciences 2.Research Center for Eco-Environmental Sciences (RCEES) 3.University of Chinese Academy of Sciences, CAS 4.Beijing Normal University 5.Aarhus University |
| 推荐引用方式 GB/T 7714 | Hu, Ying,Wei, Fangli,Fu, Bojie,et al. Multifaceted characteristics of aridity changes and causal mechanisms in Chinese drylands[J]. PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT,2022:3091333221129870-1-16. |
| APA | Hu, Ying,Wei, Fangli,Fu, Bojie,Wang, Shuai,Wang, Lanhui,&Chen, Yongzhe.(2022).Multifaceted characteristics of aridity changes and causal mechanisms in Chinese drylands.PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT,3091333221129870-1-16. |
| MLA | Hu, Ying,et al."Multifaceted characteristics of aridity changes and causal mechanisms in Chinese drylands".PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT (2022):3091333221129870-1-16. |
入库方式： OAI收割
来源：生态环境研究中心
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