Model-Based Assessment Of Forest Land Management On Water Dynamics At Various Hydrological Scales - A Case Study
FOREST MANAGEMENT AND THE WATER CYCLE: AN ECOSYSTEM-BASED APPROACH(2011)
摘要
This case study follows a straight forward approach to assess forest impact on water dynamics at different scales. Investigation
in the catchment of the upper Mulde River (Saxony/Germany) explored firstly to the impact of afforestation measures on the
soil hydraulic properties. ‘False chronosequences’ were used to quantify the time-dependent dynamical character of such changes.
The findings of these experimental studies were implemented in an existing spatially distributed water budget and rainfall-runoff
model (AKWA-M®) and scaled-up for the 129 km² large catchment of the Schwarze Pockau River (Mulde River). The aim was to describe potentials
and limitations of forest impact on water balance and floods at the mesoscale. After that a small catchment (6.8 km²) in the
study area was analyzed to describe a socio-economically founded development of the land-use (historical background, site
properties, subsidy policy etc.). The objectives were (1) to describe scenarios that reflect a close-to-reality future with
different boundary conditions which could be guided by political authorities; (2) to consider climate change especially assessing
the site conditions before a flood originating rainfall event.
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