Formation and dynamics of vegetated fluvial landforms follow the biogeomorphological succession model in a channelized river
Formation and dynamics of vegetated fluvial landforms follow the biogeomorphological succession model in a channelized river
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河道化河流中植被河流地貌的形成和动态遵循生物地貌演替模型
DOI：
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发表时间：
2020
影响因子：
3.3
通讯作者：
J. Steiger
中科院分区：
文献类型：
--
作者：
D. Corenblit;F. Vautier;E. González;J. Steiger
水文地貌过程和河岸植物之间的反馈驱动着河流廊道的景观动态和植被演替。我们描述了植被河流地貌的形成和动态的基础上，从在法国的伊泽尔河渠化的观测结果的生态反馈的后果。该通道横向受限于隆起，且大部分是直的。从1970年代初到1990年代末，交替的酒吧逐渐但大量的植被殖民化。这种情况下提出了一个特殊的机会，分析河流地貌和植被演替之间的时间调整，从裸露的砾石酒吧成熟的高地森林的结果，dumeomorphological相互作用。基于对航空照片（1948年至1996年）的GIS分析，我们表明1996年观察到的河道内植被沙洲的时空组织是由植被的生物构建和生物稳定效应以及不同年龄、大小和流动性的沙洲之间的相互作用造成的。1996年的实地测量反映了沉积动力学和河岸植被演替之间的强烈正反馈导致了植被酒吧的建设。地貌和植被变量之间的高度显著的统计关联（协惯性分析的RV = 0.41，p < 0.001）仅在一个轴上解释了95%的变异性，支持地貌变化之间存在非常强的反馈（即小的裸露交替沙洲转变为成熟高地森林覆盖的河流地貌，以及植被演替）。这种动态反映了作者先前描述的河流地貌演替模式。© 2020约翰威利父子有限公司
Feedback between hydrogeomorphological processes and riparian plants drives landscape dynamics and vegetation succession in river corridors. We describe the consequences of biogeomorphological feedback on the formation and dynamics of vegetated fluvial landforms based on observations from the channelized Isère River in France. The channel was laterally confined with embankments and mostly straightened. From the beginning of the 1970s to the end of the 1990s, alternate bars were progressively but heavily colonized by vegetation. This context presented an exceptional opportunity to analyse temporal adjustments between fluvial landforms and vegetation succession from bare gravel bars to mature upland forest as the consequence of biogeomorphological interactions. Based on a GIS analysis of aerial photographs (between 1948 and 1996), we show that the spatiotemporal organization of vegetated bars within the river channel observed in 1996 resulted from a bioconstruction and biostabilization effect of vegetation and interactions between bars of varying age, size and mobility. Field measurements in 1996 reflected how a strong positive feedback between sedimentary dynamics and riparian vegetation succession resulted in the construction of the vegetated bars. A highly significant statistical association of geomorphological and vegetation variables (RV of co‐inertia analysis = 0.41, p < 0.001) explained 95% of the variability in just one axis, supporting the existence of very strong feedback between geomorphological changes (i.e. the transformation of small bare alternate bars to fluvial landforms covered by mature upland forest, and vegetation succession). Such dynamics reflect the fluvial biogeomorphological successions model, as described by the authors earlier. © 2020 John Wiley & Sons, Ltd.
影响因子：
3.9
作者：
J. A. Stallins;D. Corenblit
通讯作者：
J. A. Stallins;D. Corenblit
影响因子：
3.3
作者：
Eichel, Jana;Corenblit, Dov;Dikau, Richard
通讯作者：
Dikau, Richard
影响因子：
3.3
作者：
Gurnell, Angela
通讯作者：
Gurnell, Angela