Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1098/rspb.2009.2208 |
Periodic versus scale-free patterns in dryland vegetation | |
von Hardenberg, Jost3; Kletter, Assaf Y.1; Yizhaq, Hezi2; Nathan, Jonathan2; Meron, Ehud1,2 | |
通讯作者 | Meron, Ehud |
来源期刊 | PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES |
ISSN | 0962-8452 |
出版年 | 2010 |
卷号 | 277期号:1688页码:1771-1776 |
英文摘要 | Two major forms of vegetation patterns have been observed in drylands: nearly periodic patterns with characteristic length scales, and amorphous, scale-free patterns with wide patch-size distributions. The emergence of scale-free patterns has been attributed to global competition over a limiting resource, but the physical and ecological origin of this phenomenon is not understood. Using a spatially explicit mathematical model for vegetation dynamics in water-limited systems, we unravel a general mechanism for global competition: fast spatial distribution of the water resource relative to processes that exploit or absorb it. We study two possible realizations of this mechanism and identify physical and ecological conditions for scale-free patterns. We conclude by discussing the implications of this study for interpreting signals of imminent desertification. |
英文关键词 | water-limited ecosystems self-organization vegetation patterns scale-free patterns desertification mathematical modelling |
类型 | Article |
语种 | 英语 |
国家 | Israel ; Italy |
收录类别 | SCI-E |
WOS记录号 | WOS:000276997700019 |
WOS关键词 | BANDED VEGETATION ; SEMIARID ECOSYSTEMS ; ARID ECOSYSTEMS ; SOIL ; FACILITATION ; KALAHARI ; WATER ; COMPETITION ; PATCHINESS ; FEEDBACKS |
WOS类目 | Biology ; Ecology ; Evolutionary Biology |
WOS研究方向 | Life Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology |
来源机构 | Ben-Gurion University of the Negev |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/166111 |
作者单位 | 1.Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel; 2.Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, IL-84990 Sede Boqer, Israel; 3.ISAC CNR, I-10133 Turin, Italy |
推荐引用方式 GB/T 7714 | von Hardenberg, Jost,Kletter, Assaf Y.,Yizhaq, Hezi,et al. Periodic versus scale-free patterns in dryland vegetation[J]. Ben-Gurion University of the Negev,2010,277(1688):1771-1776. |
APA | von Hardenberg, Jost,Kletter, Assaf Y.,Yizhaq, Hezi,Nathan, Jonathan,&Meron, Ehud.(2010).Periodic versus scale-free patterns in dryland vegetation.PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,277(1688),1771-1776. |
MLA | von Hardenberg, Jost,et al."Periodic versus scale-free patterns in dryland vegetation".PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 277.1688(2010):1771-1776. |
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