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ТРАНСФОРМАЦИЯ ОРГАНИЧЕСКОГО ВЕЩЕСТВА И ДИНАМИКА УГЛЕРОДА НА БОЛОТАХ СЕВЕРНОЙ ЧАСТИ СРЕДНЕРУССКОЙ ВОЗВЫШЕННОСТИ

ТРАНСФОРМАЦИЯ ОРГАНИЧЕСКОГО ВЕЩЕСТВА И ДИНАМИКА УГЛЕРОДА НА БОЛОТАХ СЕВЕРНОЙ ЧАСТИ СРЕДНЕРУССКОЙ ВОЗВЫШЕННОСТИ

Abstract

The article discusses the results of an experiment on the transformation of different plant remains in the ecological conditions of floodplain and watershed mires which are located in the north of the Middle-Russian Upland. The objects of the study were Menyanthes trifoliata, Filipedula ulmaria, Equisetum fluviatile, Carex acutiformis and Sphagnum fallax. It is shown that the intensity of decomposition of plant residues depends on their chemical composition (ash content, C/N ratio) and biotope conditions (aeration, mineralization of mire waters). During the 12 months of the experiment, the highest values of mass loss were noted for Menyanthes trifoliata and Filipendula ulmaria, the minimum – in sphagnum moss. In the process of decomposition of plant residues, the carbon content is changing. At the same time, in a floodplain mire which is characterize by a seasonally variable hydrological regime and rich water and mineral nutrition, a decrease of carbon content was noted in plant residues. In the watershed mire, under conditions of stable moisture and poor mineral nutrition, the carbon content increases during the experiment. Carbon stocks in plant samples decreased during the experiment. However, the highest values of carbon reserves were preserved in plant samples at the watershed mire, which is correlates with carbon concentration in peat and their active vertical growth. The conducted experiment makes it possible to assess the contribution of different mire types to carbon deposition.

В статье обсуждаются результаты эксперимента по трансформации остатков разных видов растений в экологических условиях пойменного и водораздельного болот на севере Среднерусской возвышенности. Объектами исследования являлись Menyanthes trifoliata, Filipedula ulmaria, Equisetum fluviatile, Carex acutiformis и Sphagnum fallax. Показано, что интенсивность разложения растительных остатков зависит от их химического состава (зольность, соотношение C/N) и условий биотопа (аэрация, минерализация болотных вод). За 12 месяцев эксперимента наибольшие значения потери массы отмечены у вахты трехлистной и таволги вязолистной, минимальные – у сфагнового мха. В процессе разложения растительных остатков происходит изменение содержания углерода. При этом на пойменном болоте, характеризующимся сезонно-изменчивым гидрологическим режимом и богатым водно-минеральным питанием, при разложении растений отмечено снижение содержания углерода. На водораздельном болоте в условиях стабильного увлажнения и бедного минерального питания разложение растений сопровождается увеличением содержания углерода в ходе эксперимента. Запасы углерода в растительных образцах в ходе эксперимента снижались. Однако наиболее высокие значения запасов углерода сохранились в образцах растений на водораздельном болоте, что коррелирует с показателями содержания углерода в торфах и их активным вертикальным приростом. Проведенный эксперимент позволяет оценить вклад разных типов болот в депонирование углерода.

Keywords

carbon stocks, biotope conditions, болотные экосистемы, условия биотопа, mire ecosystems, запасы углерода, трансформация растительных остатков, transformation of plant residues

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold