Decomposition rate of peat-forming plants in the oligotrophic peatland at the first stages of destruction

Nikonova, L. G.; Golovatskaya, E. A.; Terechshenko, N. N.

doi:10.1088/1755-1315/138/1/012013

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…Biochemical analyses, determination of ash content, and pH values were not replicated. The obtained values are comparable with those acquired previously for similar plant samples [4,37,38].…”

Section: Study Region and Characteristics Of Plant Samplessupporting

confidence: 90%

Impact of Temperature and Moisture on the Decomposition of Peat-Forming Plants: Results of a Two-Year Incubation Experiment

Nikonova,

Kurganova,

Lopes de Gerenyu

et al. 2023

Forests

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The decomposition rate of plant residues is determined by both abiotic (temperature, moisture) and biotic factors (biochemical composition). To separate the contribution of each factor to the decomposition process, long-term incubation experiments under controlled conditions are required. Two-year incubation experiments were conducted with various types of peat-forming plants (Sphagnum fuscum, Chamaedaphne calyculata, Eriophorum vaginatum, and a mixed sample consisting of 60% Sphagnum fuscum and 40% Chamaedaphne calyculata). The experiments were carried out at temperatures of 2, 12, and 22 °C, with varying moisture levels (W = 30, 60, and 90% of their water-holding capacity). In all plant samples, the highest rates of C(CO2) emission (DecR) were observed in the initial stages of decomposition. The cumulative carbon loss (Ccum) during the experiment ranged from 45 to 196 mgC/g of plant material at 22 °C and 23 to 156 mgC/g of plant material at 2 °C. The decay constant (k) for all plant samples increased with rising temperature. The results of the three-way ANOVA showed that the influence of the examined factors on the cumulative losses of C(CO2) decreased in the following order: the type of plant > temperature > moisture. Throughout the experiment, the influence of the type of plant and moisture on DecR increased, while the effect of temperature decreased. The highest temperature sensitivity (Q10 = 0.71–6.19) was observed in the low-temperature range (2–12 °C) during months 4 to 6 of incubation. These results are relevant for modeling and predicting the rate of transformation of peat organic matter under changing climatic conditions.

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Section: Study Region and Characteristics Of Plant Samplessupporting

confidence: 90%

Impact of Temperature and Moisture on the Decomposition of Peat-Forming Plants: Results of a Two-Year Incubation Experiment

Nikonova,

Kurganova,

Lopes de Gerenyu

et al. 2023

Forests

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“…Преобладание процессов связывания углерода над его эмиссией в атмосферу связано с низкими темпами трансформации органического вещества, что приводит к образованию торфа. Изучение процессов трансформации растительных остатков проведено на болотах таежной зоны [1][2][3][4][5][6][7], однако отсутствуют сведения об интенсивности этого процесса на болотах, расположенных в зоне широколиственных лесов, лесостепи и степи. Это свидетельствует об актуальности изучения особенностей разложения растительных остатков при их переходе в торфяные отложения.…”

Section: Introductionunclassified

The Changes of Chemical Parameters of Peat-Forming Plants During Decomposition Pro-Cesses on Karst-Suffusion Mires of the Middle-Russian Upland

Михайловна¹,

Ивановна²,

Викторович³

2020

JCPRM

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The variety of biosphere functions of mire ecosystems is associated with the intensity of vertical growth of peat deposits, which is correlated with the rate of decomposition of plant remains. This process depends on the complex of ecological conditions and accompanies by changes in the chemical composition of plants. For studying of dynamics of the chemical parameters of the main peat-forming plants on the model karst-suffusion mire, an experiment was conducted with the laying of plant material in the peat. Plant samples were placed in peat to a depth of 5–7 cm in different parts of the mire, which is corresponded to the original place of species growing. After 1 and 2 years, the samples were removed from the peat and elemental analysis was carried out on the CHN-analyzer Carlo Erba 1100, ash content was determined by weight method and the degree of decomposition of plant remains was done by microscopy method. The results shows, that during the 2-year experiment the degree of decomposition of plants remains was changed by different ways. The herbs are least resistant for decomposition in the peat, but sphagnum mosses are the most resistant. The process of decomposition of plant remains is accompanied by a decreasing of ash content in vascular plants and increasing in sphagnum mosses, which is associated with their ability to accumulate surface runoff substances and atmospheric dust. During the transformation of plant material the content of carbon and nitrogen are changing. The C/N ratio indicates an uneven proportion of carbon and nitrogen at different stages of decomposition in different plant species, which correlates with the degree of decomposition.

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“…В зимний период наблюдается ослабление процессов разложения, связанное с понижением активности микроорганизмов (Козловская и др., 1978; Миронычева-Токарева и др., 2013, Никонова и др., 2016, Головацкая и др., 2017). Максимальная потеря в весе наблюдается на первых этапах деструкции растительных остатков, когда микроорганизмы разрушают наиболее доступные компоненты, содержание которых со временем убывает, и, следовательно, уменьшаются потери массы (Боч, 1979;Nikonova et al, 2018).…”

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Estimate of temperature effect on the decomposition rate of peat-forming plants in a long-term laboratory experiment

Гарифулловна¹,

Николаевна²,

Овидиович³

et al. 2018

ПОС

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Цель исследования. Количественная оценка влияния температуры на скорость разложения современных растений-торфообразователей олиготрофных болот южно-таежной подзоны Западной Сибири в условиях длительного модельного эксперимента.

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Decomposition rate of peat-forming plants in the oligotrophic peatland at the first stages of destruction

Cited by 5 publications

References 6 publications

Impact of Temperature and Moisture on the Decomposition of Peat-Forming Plants: Results of a Two-Year Incubation Experiment

Impact of Temperature and Moisture on the Decomposition of Peat-Forming Plants: Results of a Two-Year Incubation Experiment

The Changes of Chemical Parameters of Peat-Forming Plants During Decomposition Pro-Cesses on Karst-Suffusion Mires of the Middle-Russian Upland

Estimate of temperature effect on the decomposition rate of peat-forming plants in a long-term laboratory experiment

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