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首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Formation and dynamics of vegetated fluvial landforms follow the biogeomorphological succession model in a channelized river
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Formation and dynamics of vegetated fluvial landforms follow the biogeomorphological succession model in a channelized river

机译：植被的河流地貌的形成和动态沿着通道河流的生物常规继承模型

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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 Isere 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. (c) 2020 John Wiley & Sons, Ltd.
机译：水力术过程和河岸植物之间的反馈驱动河流走廊的景观动态和植被连续。我们根据法国通道的Isere河流的观察来描述生物果断反馈对植被河流地貌的形成和动态的影响。通道横向局限于堤道，大多拉直。从20世纪70年代初到20世纪90年代末，交替的酒吧逐渐且受植被殖民的严重殖民。本文提出了一种特殊的机会，以分析河流地貌与裸砾石条与成熟普通林中植被连续的时间调整，因为生物果断相互作用。基于航空照片的GIS分析（在1948年至1996年间），我们展示了1996年观察到的河道内植被栏中的时空组织植被和植被的生物稳定效应，不同年龄和不同年龄的杆之间的相互作用。移动性。 1996年的现场测量反映了沉积动力学和河岸植被继承之间的强烈正面反馈，从而导致植被棒的构建。几何和植被变量的高度显着的统计关联（共同惯量分析= 0.41，P <0.001）在仅一个轴上解释了95％的变异性，支持在地貌变化之间存在非常强烈的反馈（即转换小裸露的交替酒吧到河流覆盖着成熟陆森林和植被连续的河流地貌）。这种动态反映了氟尿生物果断演替模型，如提交人所述早期所述。 （c）2020 John Wiley＆Sons，Ltd。

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