标题：Quantification of potential recruitment of large woody debris in mountain catchments considering the effects of vegetation on hydraulic and geotechnical bank erosion and shallow landslides
摘要：Large woody debris (LWD) exacerbates flood damages near
civil structures and in urbanized areas and the awareness of LWD as a risk
is becoming more and more relevant. The recruitment of “fresh” large
woody debris has been documented to play a significant role of the total
amount of wood transported during flood events in mountain catchments.
Predominately, LWD recruitment due to hydraulic and geotechnical bank
erosion and shallow landslides contribute to high volumes of wood during
floods. Quantifying the effects of vegetation on channel and slope
processes is extremely complex. This manuscript therefore presents the
concepts that are being implemented in a new modelling framework that
aims to improve the quantification of vegetation effects on LWD
recruitment processes. One of the focuses of the model framework is the
implementation of the effect of spatio-temporal distribution of root
reinforcement in recruitment processes such as bank erosion and shallow
landslides in mountain catchments. Further, spatio-temporal precipitation
patterns will be considered using a probabilistic approach to account for
the spatio-temporal precipitation variability to estimate a LWD recruitment
correction coefficient. Preliminary results are herein presented and
discussed in form of a case study in the Swiss Prealps.
其他摘要：Large woody debris (LWD) exacerbates flood damages near civil structures and in urbanized areas and the awareness of LWD as a risk is becoming more and more relevant. The recruitment of “fresh” large woody debris has been documented to play a significant role of the total amount of wood transported during flood events in mountain catchments. Predominately, LWD recruitment due to hydraulic and geotechnical bank erosion and shallow landslides contribute to high volumes of wood during floods. Quantifying the effects of vegetation on channel and slope processes is extremely complex. This manuscript therefore presents the concepts that are being implemented in a new modelling framework that aims to improve the quantification of vegetation effects on LWD recruitment processes. One of the focuses of the model framework is the implementation of the effect of spatio-temporal distribution of root reinforcement in recruitment processes such as bank erosion and shallow landslides in mountain catchments. Further, spatio-temporal precipitation patterns will be considered using a probabilistic approach to account for the spatio-temporal precipitation variability to estimate a LWD recruitment correction coefficient. Preliminary results are herein presented and discussed in form of a case study in the Swiss Prealps.
