Ecosystem Services Of Natural Floodplain
Segment - Lužnice River, Czech Republic
Author(s)
D. Pithart, K. Křováková, J. Žaloudík, T. Dostál, J Valentová,
P. Valenta, J. Weyskrabová & J. Dušek
Abstract
The river Lužnice floodplain in south Bohemia with a preserved floodplain
ecosystem and hydrological regime has been investigated for selected ecosystem
services (ES): flood mitigation, biodiversity refuge, carbon sequestration, and
production of commodities. Two contrasting scenarios at 5 km long studying
floodplain segment were compared: near-nature state as it is (Scenario A) and
virtually transformed floodplain (Scenario B). For the flood mitigation service, we
used an output from hydraulic analysis of modelled flood events (model FAST 2D)
showing the effective retention volume 2.3 mil m3 for A and 0.83 m3 for B. For
monetary evaluation, we used the method of replacement cost of this retention
volume. For biodiversity refuge, the value of biotopes (real for A and arbitrary for
B) and their contribution to the floodplain area were analysed according to the
Hessen method. Carbon sequestration was measured by eddy-covariance method.
All ES for both scenarios were converted to monetary value and scenarios A and B
were compared. The contribution of particular ES to the total ecosystem value
showed the importance of flood mitigation and biodiversity refugium compared to
other services. Overall floodplain value was estimated as 17 213 EUR ha.-1.yr-1 for
state as it is (A) and 6 254 EUR ha.-1.yr-1 for transformed floodplain (B), i.e. virtual
floodplain transformation decreased its value to 36%.
Keywords: floodplain, ecosystem services, monetary evaluation flood mitigation,
carbon sequestration, biodiversity.
Keywords
floodplain, ecosystem services, monetary evaluation flood mitigation,
carbon sequestration, biodiversity
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