scholarly journals Landscape metrics as a tool for evaluating scenarios for flood prevention and nature conservation

2011 ◽  
Vol 25 ◽  
pp. 1-11 ◽  
Author(s):  
Sylvi Bianchin ◽  
Elke Richert ◽  
Hermann Heilmeier ◽  
Mariusz Merta ◽  
Christina Seidler

Within the framework of the project "Flood Prevention and Nature Conservation in the Weisseritz area" ("HochNatur"), a method including landscape metrics was developed and applied to assess and to compare different land use scenarios with regard to flood prevention and nature conservation. For the analysis, two sub-catchments strongly differing in land use within the Weisseritz catchment (Eastern Erzgebirge, Saxony, Germany) were selected. The first step of the evaluation procedure was a biotope assessment using three assessment criteria (naturalness, substitutability, rareness/endangerment). However, the biotope assessment did not yield any information about spatial distribution or the structural composition of the landscape. Therefore, landscape metrics were applied to analyse the structural and biotope type diversity at the landscape scale. Different landscape metrics (Shannon/Weaver diversity index, mean patch size index, Interdispersion/Juxtaposition index) and a weighting system were used to compare the different land use scenarios and the current state. The analysed catchment areas differ substantially in terms of their current state and potential measures regarding flood prevention and nature conservation depending on the location and distribution of biotope types. It was demonstrated that this method can be used for small catchment areas regardless of their land use for assessing, analysing and comparing different land use scenarios for a specific area.




2011 ◽  
Vol 103 (2) ◽  
pp. 118-128 ◽  
Author(s):  
Elke Richert ◽  
Sylvi Bianchin ◽  
Hermann Heilmeier ◽  
Mariusz Merta ◽  
Christina Seidler


River Systems ◽  
2002 ◽  
Vol 13 (3-4) ◽  
pp. 285-303
Author(s):  
Ilpo Hakala ◽  
Eeva Huitu ◽  
Suvi Mäkelä ◽  
Lauri Arvola


2008 ◽  
Vol 3 (Special Issue No. 1) ◽  
pp. S105-S115 ◽  
Author(s):  
M. Merta ◽  
C. Seidler ◽  
S. Bianchin ◽  
H. Heilmeier ◽  
E. Richert

Two different models (WBS FLAB, WaSiM-ETH) were used in the project HochNatur (flood prevention and nature conservation in the Weißeritz catchment in the Eastern Ore Mts. – Erzgebirge) to determine risk areas with quick runoff processes and to simulate the discharge. It was done in different scales, in the mesoscale Weißeritz catchment as well as two selected subcatchments with different natural and urban conditions, the Weißbach subcatchment with a well-structured landscape, the Höckenbach subcatchment with a greater part of arable land. On the basis of selected scenarios, the effect of land use changes on the runoff generation processes of an area and on the hydrograph is described. Land use changes are able to reduce the portion of quick runoff components, the water erosion and the discharge. The effect occurs especially in smaller catchments and with short heavy rains (events with a frequency of occurrence of 5–50 years). Depending on the present situation the changes have to include areas of more than 25% of the catchments area to cause a significant effect. It became apparent that nature conservation and flood prevention agree well in their requirements with the land use. A rich structured landscape proved to be extraordinarily positive for both, flood prevention and nature conservation.



2012 ◽  
Vol 19 (6) ◽  
pp. 1431-1436 ◽  
Author(s):  
Qiao LUO ◽  
Ke-Lin WANG ◽  
Qin-Xue WANG


Hydrology ◽  
2021 ◽  
Vol 8 (3) ◽  
pp. 102
Author(s):  
Frauke Kachholz ◽  
Jens Tränckner

Land use changes influence the water balance and often increase surface runoff. The resulting impacts on river flow, water level, and flood should be identified beforehand in the phase of spatial planning. In two consecutive papers, we develop a model-based decision support system for quantifying the hydrological and stream hydraulic impacts of land use changes. Part 1 presents the semi-automatic set-up of physically based hydrological and hydraulic models on the basis of geodata analysis for the current state. Appropriate hydrological model parameters for ungauged catchments are derived by a transfer from a calibrated model. In the regarded lowland river basins, parameters of surface and groundwater inflow turned out to be particularly important. While the calibration delivers very good to good model results for flow (Evol =2.4%, R = 0.84, NSE = 0.84), the model performance is good to satisfactory (Evol = −9.6%, R = 0.88, NSE = 0.59) in a different river system parametrized with the transfer procedure. After transferring the concept to a larger area with various small rivers, the current state is analyzed by running simulations based on statistical rainfall scenarios. Results include watercourse section-specific capacities and excess volumes in case of flooding. The developed approach can relatively quickly generate physically reliable and spatially high-resolution results. Part 2 builds on the data generated in part 1 and presents the subsequent approach to assess hydrologic/hydrodynamic impacts of potential land use changes.





2015 ◽  
Vol 39 (1) ◽  
pp. 45-60 ◽  
Author(s):  
Beata Babczyńska-Sendek ◽  
Agnieszka Błońska ◽  
Izabela Skowronek

Abstract Human activity is a factor strongly influencing the current state of vegetation. The abandonment of traditional land use enables uncontrolled secondary succession. Libanotis pyrenaica, a host plant for Orobanche bartlingii, is a great example of species that spread as a result of this process, especially in the area of the Silesian-Cracow Upland. The aim of this study is to show that the expansion of L. pyrenaica caused by changes in land use promotes spreading of O. bartlingii - a species rare in Poland and Europe. During the field research conducted in the last decade, further localities of O. bartlingii were found. The gathered data were summarized to supplement the known distribution of the species and to present floristic and ecological characteristics of the phytocenoses with the participation of L. pyrenaica and O. bartlingii.



2021 ◽  
Vol 69 ◽  
pp. 102310
Author(s):  
Meghan Graham MacLean ◽  
Matthew J. Duveneck ◽  
Joshua Plisinski ◽  
Luca L. Morreale ◽  
Danelle Laflower ◽  
...  


2021 ◽  
pp. 1-20
Author(s):  
Raziye Hale Topaloğlu ◽  
Gül Asli Aksu ◽  
Yusuf Alizade Govarchin Ghale ◽  
Elif Sertel


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