Annual Carbon Budget of Biogenic Greenhouse Gases under Mixed Land Use: Lgov District as a Model Object of the Central Chernozem Zone of Russia

Karelin, D.V.; Sukhoveeva, O.E.; Glagolev, M.V.; Dobryanskiy, A.S.; Sabrekov, A.F.; I, V.Z.

Авторы: Karelin D.V., Sukhoveeva O.E., Glagolev M.V., Dobryanskiy A.S., Sabrekov A.F., I V.Zamotaev
Журнал: Eurasian Soil Science
Том: 56
Номер: 8
Год издания: 2023
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 1043
Последняя страница: 1054
Оригинальные версии: Годовой бюджет углеродсодержащих биогенных парниковых газов при смешанном землепользовании: Льговский район как модельный объект центрального черноземья
DOI: 10.1134/S1064229323600872
Аннотация: A comprehensive study of the net annual balance of biogenic carbon-containing greenhouse gaseshas been performed for Lgov administrative district (Kursk oblast) in the chernozem zone of the European part of Russia. The data sources include field estimates of carbon dioxide and methane exchange between soil and atmosphere, above- and below-ground phytomass stocks, models parameterized on these data, official statistical and meteorological information, and published scientific sources. Sugar industry wastewater treatment infiltration fields are responsible for 26% of CH4 emissions from the territory of the district, although they occupy only 0.04% of its area. The maximum of CO2 emission from soils is observed at the soil water content of 30 vol %; above this value, methane emission begins to rise linearly reaching its maximum in waterlogged habitats, including those of infiltration fields. Another significant local source of methane is compost storages (22%). However, water reservoirs, oxbow lakes and ponds are the largest local source of CH4 (43%). Among the main net sources of CO2 emission, the combustion of fossil fuels by transport and agricultural machinery predominates (22.3%). In contrast to methane, whose emission is mainly determined by powerful point sources, the input of net fluxes of CO2 positively correlates with their area. Currently observed relatively small net CO2 flux in the district area (–6.4 g C m–2 per year) is decisively overlapped by local methane sources (+95 g C–CO2 equiv m–2 per year). The influence of the land use and methods of calculation on the C balance of the territory under study and a way of its transformation into a carbon-neutral state are discussed.
Добавил в систему: Карелин Дмитрий Витальевич

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Annual Carbon Budget of Biogenic Greenhouse Gases under Mixed Land Use: Lgov District as a Model Object of the Central Chernozem Zone of Russiaстатья

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