Record Details

Canal blocking optimization in restoration of drained peatlands

CGSpace

View Archive Info
 
 
Field Value
 
Title Canal blocking optimization in restoration of drained peatlands
 
Creator Urzainki, I.
Laurén, A.
Palviainen, M.
Haahti, K.
Budiman, A.
Basuki, I.
Netzer, M.
Hökkä, H.
 
Subject peatlands
ecological restoration
hydrology
 
Description Drained peatlands are one of the main sources of carbon dioxide (CO2) emissions globally. Emission reduction and, more generally, ecosystem restoration can be enhanced by raising the water table using canal or drain blocks. When restoring large areas, the number of blocks becomes limited by the available resources, which raises the following question: in which exact positions should a given number of blocks be placed in order to maximize the water table rise throughout the area? There is neither a simple nor an analytic answer. The water table response is a complex phenomenon that depends on several factors, such as the topology of the canal network, site topography, peat hydraulic properties, vegetation characteristics and meteorological conditions. We developed a new method to position the canal blocks based on the combination of a hydrological model and heuristic optimization algorithms. We simulated 3 d dry downs from a water saturated initial state for different block positions using the Boussinesq equation, and the block configurations maximizing water table rise were searched for by means of genetic algorithm and simulated annealing. We applied this approach to a large drained peatland area (931 km2) in Sumatra, Indonesia. Our solution consistently outperformed traditional block locating methods, indicating that drained peatland restoration can be made more effective at the same cost by selecting the positions of the blocks using the presented scheme.
 
Date 2020-10-02
2021-10-14T11:40:10Z
2021-10-14T11:40:10Z
 
Type Journal Article
 
Identifier Urzainki, I., Laurén, A., Palviainen, M., Haahti, K., Budiman, A., Basuki, I., Netzer, M., and Hökkä, H. 2020. Canal blocking optimization in restoration of drained peatlands. Biogeosciences, 17(19): 4769–4784. https://doi.org/10.5194/bg-17-4769-2020
1726-4170
https://hdl.handle.net/10568/115417
https://doi.org/10.5194/bg-17-4769-2020
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format 4769-4784
 
Publisher Copernicus GmbH
 
Source Biogeosciences