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A Decision Support System for Management of Mires in the Forest Supported by: Deutsche Bundesstiftung Umwelt First results of a research project (2006.

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Presentation on theme: "A Decision Support System for Management of Mires in the Forest Supported by: Deutsche Bundesstiftung Umwelt First results of a research project (2006."— Presentation transcript:

1 A Decision Support System for Management of Mires in the Forest Supported by: Deutsche Bundesstiftung Umwelt First results of a research project (2006 – 2009) Humboldt Universität zu Berlin, Division of Soil Science and Site Science (Prof. J. Zeitz, B. Hasch, H. Lotsch) University of Applied Science Eberswalde, Department of Vegetational Science and Applied Plant Ecology (Prof. V. Luthardt, R. Meier)

2 A Decision Support System for Management of Mires in the Forest (DSS-WAMOS) Object of investigation Definition - Forest mire Forest mires (in terms of DSS-WAMOS) are defined as mires (with or without wood) connected to forest. The catchment area is predominantly covered with wood - which has a significant impact on the water supply situation of the mire.

3 A Decision Support System for Management of Mires in the Forest (DSS-WAMOS) WATER DEFICIENCY drainage-systems lowering of the regional ground water table unnatural composition of forest stand in the catchment area Background: pressures on forest mires

4 A Decision Support System for Management of Mires in the Forest (DSS-WAMOS) Background: previous restoration practice 49 % of the projects showed only slight degree of success* 75 % of the restoration projects (n = 53) were accomplished without any further site analysis or simply based on inspection of the site low transparency regarding the aspired development objective and decision relevant parameter disregard of abiotic parameter (water supply and nutrient budget) *Evaluation criteria here was the development of the mire water level (spacial / temporal) in % 6% 49% 23% Degree of success (n=53) high mid low not evaluated

5 A Decision Support System for Management of Mires in the Forest (DSS-WAMOS) Project objective What shall the DSS-WAMOS provide? Derive an individually adapted, optimal proposal for restauration measures in forest mires: –high reliability at rather low data-requirement –high transparency and simple practicability (dichotomous decision trees) –provision of expertise and professional decision-relevant information –point out possible incertainties and additional investigations if necessary

6 A Decision Support System for Management of Mires in the Forest (DSS-WAMOS) Identification of decision-relevant parameter: evaluation of technical literature and guidelines concerning the restoration of mires experts talks on restoration with participants from science and practice analysis of restoration projects analysis of existent DSS-components concerning its applicability Development and validation of the DSS-structure Model part: elaborate decision trees in a modular concept validation in selected mires (test areas) Methods

7 A Decision Support System for Management of Mires in the Forest (DSS-WAMOS) Basic structure of the DSS-WAMOS model part Section objective of restoration" Section determination of measures development objective (intended water level and pattern of use) water availability restriction caused by land use module spacial resistance/ utilisation" module rewetting potential module self-eutrophication" module nutrient discharge" protection of species and habitats module water regime"

8 A Decision Support System for Management of Mires in the Forest (DSS-WAMOS) DSS-WAMOS – development objective – Matrix () = under reserve: * = practicable not until removal of all limitation ** = conservation of species and habitats has priority in case maintenance is secured

9 A Decision Support System for Management of Mires in the Forest (DSS-WAMOS) Basic structure of the DSS-WAMOS model part Section objective of restoration" Section determination of measures development objective (intended water level and pattern of use) matrix hydraulic measures management strategy module catchment area" module maintenance water availability restriction caused by land use module spacial resistance/ utilisation" module rewetting potential module hydraulic situation module self-eutrophication" module nutrient discharge" protection of species and habitats module water regime"

10 A Decision Support System for Management of Mires in the Forest (DSS-WAMOS) Handelt es sich um ein geneigtes Moor? ja nein Entwässerungsanlagen vorhanden? ja nein keine wasserbauliche Maßnahme Waldmoor-Kartierung Ortskenntnis Waldmoor-Kartierung Ortskenntnis Vermessung Oberboden tiefer als 15 cm stark vererdet? ja Unterlagerung durch gering zersetzten Torf? ja nein Liegt gespanntes Grundwasser im oberen Hangbereich vor? nein ja hohe Durchlässigkeit in der mineralischen Umgebung/ mineral. Untergrund? ja nein Waldmoor-Kartierung Ortskenntnis Waldmoor-Kartierung Ortskenntnis Waldmoor-Kartierung Sonderuntersuchung Ortskenntnis / Sonder- untersuchung / Probeschurf Oberboden tiefer als 15 cm stark vererdet? ja flachgründiges Moor? ja nein hohe Durchlässigkeit in der mineralischen Umgebung/ mineral. Untergrund? nein ja Maßnahmen- feld M1 Geol. Karte Ortskenntnis Geol. Karte Ortskenntnis Ortskenntnis / Sonder- untersuchung / Probeschurf Maßnahmen- feld M2 Maßnahmen- feld M3 Maßnahmen- feld M4 Maßnahmen- feld M5 Maßnahmen- feld M6 Maßnahmen- feld M7 Maßnahmen- feld M8 Maßnahmen- feld M9 module hydraulic situation Task: –determination of hydraulic measures Decision relevant parameters: –slope –mire depth –thickness of degraded topsoil –decomposition of undegraded peat layers in the subsoil –water permeability of mineral subsoil –existance of artesian ground water -kind of ditches max. 5 steps to come to a decision

11 A Decision Support System for Management of Mires in the Forest (DSS-WAMOS) DSS-WAMOS – rewetting measures – Matrix

12 A Decision Support System for Management of Mires in the Forest (DSS-WAMOS) Decision-relevant parameters module Maintenance Module Maintenance Task: –derive of adequate maintenance measures in the mire Decision relevant parameters: –feasibility of hydraulic measures –type of current land use (agriculture / commercial forestry) –species of mire grove –existance of specific kinds of shadowing-sensitive vegetation that need to be preserved –hydrostatic type of mire / oszillation ability –abundance of brown mosses –long term warrantee maintenance –density of mire grove –kind of pine-needle (short-needle / long-needle type)

13 A Decision Support System for Management of Mires in the Forest (DSS-WAMOS) differentiated, practicable basic structure manageable amount of parameters and decision steps parameters are largely available through the standardized mapping sheet of forest mires additional investigations referring to: –slope of mire surface –mire depth –ground water (especially confined ground water) additional external data / information requirement: –ground water table (trend) –geology –water quality (influx of surface water) –status of protected area / type of habitat (FFH-directive) uncertainties: –evaluation of rewetting potential (uncertain water balance) –impact assessment of nutrient remobilisation and discharge –handling of heterogeneous areas –applicability on other natural geographic region DSS-WAMOS – Conclusion

14 supported by: Deutsche Bundesstiftung Umwelt Thank you for your attention!


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