Complex bog landscape model (COMBOLA) as an integrated tool for modeling of biotic turnover and peat deposit processes

International Conference and Early Career Scientists School on Environmental Observations, Modeling and Information Systems: ENVIROMIS-2018

生态环境科学;计算机科学

Zavalishin, N.N.^1 ; Dyukarev, E.A.^2 ; Kharanzhevskaya, Y.A.^3 ; Golovatskaya, E.A.^2 ; Sinyutkina, A.A.^3

Laboratory of Mathematical Ecology, A.M. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences, 3, Pyzhevsky Lane, Moscow

119017, Russia^1

Institute of Monitoring of Climatic and Ecological Systems of the Siberian Branch, Russian Academy of Sciences, 10/3, Akademicheskiy av., Tomsk

634055, Russia^2

Siberian Research Institute of Agriculture and Peat, Siberian Federal Scientific Center of Agro-Bio Technologies of the Russian Academy of Sciences, 3, Gagarina str., Tomsk

634050, Russia^3

关键词: Carbon and nitrogen;    Initial information;    Interconnected modules;    Mass balance equations;    Matter production;    Methanotrophic bacteria;    Net ecosystem exchange;    Water table depths;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/211/1/012029/pdf
DOI  :  10.1088/1755-1315/211/1/012029

来源: IOP

【 摘 要 】

Biotic cycling in ecosystems consists of live organic matter production and dead organic matter destruction. The latter is accompanied by the emission of greenhouse gases into the atmosphere. In peatland landscapes, additional conditions are imposed due to the presence of a water table depth (WTD), under which the destruction is anaerobic with methane generation, while above the WTD it is aerobic, and part of the diffusing methane is consumed by the methanotrophic bacteria. Hence, due to the complexity of heat and water transfer processes in the peat deposit and the nonlinearity of biological turnover, it is necessary to make a combination of their models. The COmplex Model of BOg LAndscapes (COMBOLA) is a set of dynamic models of carbon and nitrogen turnover, net ecosystem exchange, water balance, heat and water transport, generation and transfer of CO2 and CH4 in a peat deposit on annual, seasonal, and daily time scales. The main component includes a series of biotic turnover models - from a mass-balance equation on an annual time scale to a NEE dynamics model on a daily one. Biotic turnover can be represented by a single carbon cycle, a single nitrogen cycle or both. Another important component of the COMBOLA system is a one-dimensional vertical model of heat-water-gas exchange in a peat deposit. Thus, a number of interconnected modules constitute an integrated mathematical model of peatland landscapes adapted to any given initial information.