@article{gledocs_11858_9678,
author = {Kalinsky, Kira and Sieber, Ann Christin and Höper, Heinrich},
title = {Effects of water management on peatland water table and peatland subsidence},
year = {2021},
volume = {51},
pages = {13-40},

abstract = {Drained peatlands are hotspots for carbon dioxide (CO2) and nitrous oxide (N2O) emissions. In Niedersachsen, 69 % of the peatland area is used for agriculture and is responsible for 11 % of the annual CO2 and N2O emissions. Raising peatland water tables to 0.30 m below surface could reduce emissions. In this study, three water regulation methods were tested to raise water table and to maintain grassland use on bog peatlands. In the first method, weirs were installed to block ditches and retain surface runoff within the blocking ditches. For the second method, ditch impoundment, additional water was pumped into the ditches creating constant ditch water levels. The third method, subsurface irrigation, further increased the water table within the grassland by allowing water to flow from the ditch into the bog area via subsurface pipes. Ditch impoundment and subsurface irrigation methods effectively raised the bog water tables. In the summer 2020, the mean water tables for ditch impoundment and subsurface irrigation reached 0.32 m and 0.23 m below surface, while the water table with blocking ditches was much lower with 0.61 m below surface. Overall, the subsurface irrigation method successfully raised the bog water tables and reduced subsidence. Negative aspects of this method are the costs for pipes and weirs, the reduced trafficability and the increased water demand.},
note = { \url {http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9678}},
note = { \url {http://dx.doi.org/10.23689/fidgeo-5336}},
}