Relationships Among Basin Area,
Sediment Transport Mechanisms And
Wood Storage In Mountain Basins Of The
Dolomites (Italian Alps)
Author(s)
E. Rigon, F. Comiti, L. Mao & M. A. Lenzi
Abstract
The present work analyses the linkages between basin geology, shallow
landslides, streambed morphology and debris flow occurrence in several small
watersheds of the Dolomites (Italian Alps). Field survey and GIS analysis were
carried out in order to seek correlations among basin area, basin geology, spatial
frequency of landslides, in-channel wood storage, and local bed slope.
Keywords: large woody debris, landslides, bed morphology, Alps.
1 Introduction
Along with sediments, shallow landslides in forested basins supply channels with
wood elements, which may have a strong impact on both channel
morphology/stability and on debris flow dynamics.
Headwater channels, which make up 60–80% of the cumulative channel
length in mountainous terrain [10, 11], are characterized by a strong coupling
between hillslope and channel processes, in contrast to lowland streams. The
switch between different transport mechanisms (e.g., bedload transport to debris
flows) in the same channel often depends on the occurrence of shallow
landslides feeding sediment in otherwise sediment-limited systems. Along with
sediments, shallow landslides in forested basins supply channels with wood
elements, which may have a strong impact on both channel morphology/stability
Keywords
large woody debris, landslides, bed morphology, Alps.
Related Book
Other papers in this volume
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