DOI: 10.1002/2015GL065688
论文题名: Noise-driven cooperative dynamics between vegetation and topography in riparian zones
作者: Vesipa R. ; Camporeale C. ; Ridolfi L.
刊名: Geophysical Research Letters
ISSN: 0094-8575
EISSN: 1944-8306
出版年: 2015
卷: 42, 期: 19 起始页码: 8021
结束页码: 8030
语种: 英语
英文关键词: ecomorphodynamics
; ecosystem engineers
; riparian vegetation
; state-dependent dichotomous noise
Scopus关键词: Ecology
; Ecosystems
; Rivers
; Stochastic models
; Stochastic systems
; Topography
; Vegetation
; Cooperative dynamics
; Dichotomous noise
; ecomorphodynamics
; Ecosystem engineer
; Riparian ecosystem
; Riparian vegetation
; Stochastically dominated
; Suitable conditions
; Probability density function
; biomass
; ecomorphology
; ecosystem engineering
; fluvial geomorphology
; noise
; probability density function
; riparian zone
; stochasticity
; survival
; topography
; vegetation cover
英文摘要: Riparian ecosystems exhibit complex biotic and abiotic dynamics, where the triad vegetation-sediments-stream determines the ecogeomorphological features of the river landscape. Random fluctuations of the water stage are a key trait of this triad, and a number of behaviors of the fluvial environment can be understood only taking into consideration the role of noise. In order to elucidate how randomness shape riparian transects, a stochastic model that takes into account the main links between vegetation, sediments, and the stream is adopted, emphasizing the capability of vegetation to alter the plot topography. A minimalistic approach is pursued, and the probability density function of vegetation biomass is analytically evaluated in any transect plot. This probability density function strongly depends on the vegetation-topography feedback. We demonstrate how the vegetation-induced modifications of the bed topography create more suitable conditions for the survival of vegetation in a stochastically dominated environment. Key Points A stochastic model elucidates how random variations of water stage shape riparian transects A key feature of the model is to consider that vegetation alters the plot topography Vegetation modifies the topography for creating conditions more suitable to its survival © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946935562&doi=10.1002%2f2015GL065688&partnerID=40&md5=bff71154ef0d717e98e5a7b51af599fb
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8191
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Turin, Italy
Recommended Citation:
Vesipa R.,Camporeale C.,Ridolfi L.. Noise-driven cooperative dynamics between vegetation and topography in riparian zones[J]. Geophysical Research Letters,2015-01-01,42(19).