Methane fluxes during the cold season: distribution and mass transfer in the snow cover of bogs

Smagin, A.V.; Shnyrev, N.A.

Авторы: Smagin A.V., Shnyrev N.A.
Журнал: Eurasian Soil Science
Том: 48
Номер: 8
Год издания: 2015
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 823
Последняя страница: 830
Оригинальные версии: Потоки метана в холодное время года: распределение и массоперенос в снежном покрове болот
DOI: 10.1134/S1064229315080086
Аннотация: Fluxes and profile distribution of methane in the snow cover and different landscape elements of an oligotrophic West-Siberian bog (Mukhrino Research Station, Khanty-Mansiisk autonomous district) have been studied during a cold season. Simple models have been proposed for the description of methane distribution in the inert snow layer, which combine the transport of the gas and a source of constant intensity on the soil surface. The formation rates of stationary methane profiles in the snow cover have been estimated (characteristic time of 24 h). Theoretical equations have been derived for the calculation of small emission fluxes from bogs to the atmosphere on the basis of the stationary profile distribution parameters, the snow porosity, and the effective methane diffusion coefficient in the snow layer. The calculated values of methane emission significantly (by 2–3 to several tens of times) have exceeded the values measured under field conditions by the closed chamber method (0.008–0.25 mg C/(m^2 h)), which indicates the possibility of underestimating the contribution of the cold period to the annual emission cycle of bog methane.
Добавил в систему: Шнырев Николай Андреевич

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Methane fluxes during the cold season: distribution and mass transfer in the snow cover of bogsстатья

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