Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1098/rsta.2012.0359 |
Local properties of patterned vegetation: quantifying endogenous and exogenous effects | |
Penny, Gopal G.1; Daniels, Karen E.2; Thompson, Sally E.1 | |
通讯作者 | Penny, Gopal G. |
来源期刊 | PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
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ISSN | 1364-503X |
EISSN | 1471-2962 |
出版年 | 2013 |
卷号 | 371期号:2004 |
英文摘要 | Dryland ecosystems commonly exhibit periodic bands of vegetation, thought to form due to competition between individual plants for heterogeneously distributed water. In this paper, we develop a Fourier method for locally identifying the pattern wavenumber and orientation, and apply it to aerial images from a region of vegetation patterning near Fort Stockton, TX, USA. We find that the local pattern wavelength and orientation are typically coherent, but exhibit both rapid and gradual variation driven by changes in hillslope gradient and orientation, the potential for water accumulation, or soil type. Endogenous pattern dynamics, when simulated for spatially homogeneous topographic and vegetation conditions, predict pattern properties that are much less variable than the orientation and wavelength observed in natural systems. Our local pattern analysis, combined with ancillary datasets describing soil and topographic variation, highlights a largely unexplored correlation between soil depth, pattern coherence, vegetation cover and pattern wavelength. It also, surprisingly, suggests that downslope accumulation of water may play a role in changing vegetation pattern properties. |
英文关键词 | arid ecosystems pattern formation Fourier analysis |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000330314500007 |
WOS关键词 | BANDED VEGETATION ; SEMIARID VEGETATION ; SELF-ORGANIZATION ; WESTERN-AUSTRALIA ; FOURIER-ANALYSIS ; ARID ECOSYSTEMS ; SOIL-MOISTURE ; TIGER BUSH ; NIGER ; SYSTEMS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
来源机构 | University of California, Berkeley |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/179202 |
作者单位 | 1.Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94710 USA; 2.N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA |
推荐引用方式 GB/T 7714 | Penny, Gopal G.,Daniels, Karen E.,Thompson, Sally E.. Local properties of patterned vegetation: quantifying endogenous and exogenous effects[J]. University of California, Berkeley,2013,371(2004). |
APA | Penny, Gopal G.,Daniels, Karen E.,&Thompson, Sally E..(2013).Local properties of patterned vegetation: quantifying endogenous and exogenous effects.PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES,371(2004). |
MLA | Penny, Gopal G.,et al."Local properties of patterned vegetation: quantifying endogenous and exogenous effects".PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES 371.2004(2013). |
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