Authors:
Ari Laurén, Hannu Hökkä, Samuli Launiainen, Marjo Palviainen, Aleksi Lehtonen and Anssi Ahtikoski
Book:
Proceedings of the 15th International Peat Congress
Venue:
Kuching
Keywords:
drainage, hydrology, mathematical-modeling, nutrition, peatland-forests
Documentfile:
ipc16p529-532lauren.hokka_.etal_.pdf
Summary:
SUMMARY
We built and applied peatland simulator Susi that allows simultaneous assessment of economic benefits and adverse environmental effects of peatland forest drainage. The process based simulator was constructed on the following theoretical framework: Forest growth in peatlands is nutrient limited; principal source of nutrients is the decomposition of organic matter. Excess water decreases O2 diffusion and slows down the nutrient release. Drainage increases O2 diffusion and consequently organic matter decomposition, CO2 efflux, and nutrient supply, and enhances the growth of forest. Profitability of the drainage operation depends on costs, gained extra yield and its allocation into timber assortments, and the rate of interest. The performance of hydrology and forest growth part of the simulator was tested against independent datasets. The results showed a clear relation between the…