Canal blocking optimization in restoration of drained peatlands
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 avai...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Copernicus GmbH
2020
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/115417 |
| _version_ | 1855521166671740928 |
|---|---|
| author | Urzainki, I. Laurén, A. Palviainen, M. Haahti, K. Budiman, A. Basuki, I. Netzer, M. Hökkä, H. |
| author_browse | Basuki, I. Budiman, A. Haahti, K. Hökkä, H. Laurén, A. Netzer, M. Palviainen, M. Urzainki, I. |
| author_facet | Urzainki, I. Laurén, A. Palviainen, M. Haahti, K. Budiman, A. Basuki, I. Netzer, M. Hökkä, H. |
| author_sort | Urzainki, I. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| 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. |
| format | Journal Article |
| id | CGSpace115417 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Copernicus GmbH |
| publisherStr | Copernicus GmbH |
| record_format | dspace |
| spelling | CGSpace1154172023-12-08T19:25:22Z Canal blocking optimization in restoration of drained peatlands Urzainki, I. Laurén, A. Palviainen, M. Haahti, K. Budiman, A. Basuki, I. Netzer, M. Hökkä, H. peatlands ecological restoration hydrology 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. 2020-10-02 2021-10-14T11:40:10Z 2021-10-14T11:40:10Z Journal Article https://hdl.handle.net/10568/115417 en Open Access Copernicus GmbH 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 |
| spellingShingle | peatlands ecological restoration hydrology Urzainki, I. Laurén, A. Palviainen, M. Haahti, K. Budiman, A. Basuki, I. Netzer, M. Hökkä, H. Canal blocking optimization in restoration of drained peatlands |
| title | Canal blocking optimization in restoration of drained peatlands |
| title_full | Canal blocking optimization in restoration of drained peatlands |
| title_fullStr | Canal blocking optimization in restoration of drained peatlands |
| title_full_unstemmed | Canal blocking optimization in restoration of drained peatlands |
| title_short | Canal blocking optimization in restoration of drained peatlands |
| title_sort | canal blocking optimization in restoration of drained peatlands |
| topic | peatlands ecological restoration hydrology |
| url | https://hdl.handle.net/10568/115417 |
| work_keys_str_mv | AT urzainkii canalblockingoptimizationinrestorationofdrainedpeatlands AT laurena canalblockingoptimizationinrestorationofdrainedpeatlands AT palviainenm canalblockingoptimizationinrestorationofdrainedpeatlands AT haahtik canalblockingoptimizationinrestorationofdrainedpeatlands AT budimana canalblockingoptimizationinrestorationofdrainedpeatlands AT basukii canalblockingoptimizationinrestorationofdrainedpeatlands AT netzerm canalblockingoptimizationinrestorationofdrainedpeatlands AT hokkah canalblockingoptimizationinrestorationofdrainedpeatlands |