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首页> 外文期刊>Geomorphology >Characterising physical habitats and fluvial hydromorphology: A new system for the survey and classification of river geomorphic units
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Characterising physical habitats and fluvial hydromorphology: A new system for the survey and classification of river geomorphic units

机译：表征自然栖息地和河流水文形态：河流地貌单位调查和分类的新系统

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摘要

Geomorphic units are the elementary spatial physical features of the river mosaic at the reach scale that are nested within the overall hydromorphological structure of a river and its catchment. Geomorphic units also constitute the template of physical habitats for the biota. The assessment of river hydromorphological conditions is required by the European Water Framework Directive 2000/60 (WFD) for the classification and monitoring of water bodies and is useful for establishing links between their physical and biological conditions. The spatial scale of geomorphic units, incorporating their component elements and hydraulic patches, is the most appropriate to assess these links. Given the weakness of existing methods for the characterisation and assessment of geomorphic units and physical habitats (e.g., lack of a well-defined spatiotemporal framework, terminology issues, etc.), a new system for the survey and characterisation of river geomorphic units is needed that fits within a geomorphologically meaningful framework.
机译：地貌单位是河流镶嵌物在到达范围内的基本空间物理特征，它们嵌套在河流及其集水区的整体水形态结构中。地貌单元也构成了生物群物理栖息地的模板。欧洲水框架指令2000/60（WFD）要求对河流的水文形态条件进行评估，以对水体进行分类和监测，这对于在其物理和生物条件之间建立联系非常有用。结合其组成元素和水力补丁的地貌单元的空间尺度最适合评估这些联系。鉴于现有用于表征和评估地貌单元和自然栖息地的方法的弱点（例如，缺乏明确的时空框架，术语问题等），需要一种新的系统来对河流地貌单元进行调查和表征符合地貌学意义上的框架。

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