气候变化领域集成服务门户(CCPortal): Interannual variability in the ecosystem CO2 fluxes at a paludified spruce forest and ombrotrophic bog in the southern taiga

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DOI	10.5194/acp-23-2273-2023
	Interannual variability in the ecosystem CO2 fluxes at a paludified spruce forest and ombrotrophic bog in the southern taiga
	Mamkin, Vadim; Avilov, Vitaly; Ivanov, Dmitry; Varlagin, Andrey; Kurbatova, Julia
发表日期	2023
ISSN	1680-7316
EISSN	1680-7324
起始页码	2273
结束页码	2291
卷号	23 期号:3 页码:19
英文摘要	Climate warming in high latitudes impacts CO2 sequestration of the northern peatlands through the changes in production and decomposition processes. The response of the net CO2 fluxes between ecosystems and the atmosphere to climate change and weather anomalies can vary across forest and non-forest peatlands. To better understand the differences in CO2 dynamics at forest and non-forest boreal peatlands induced by changes in environmental conditions, the estimates of interannual variability in the net ecosystem exchange (NEE), total ecosystem respiration (TER), and gross primary production (GPP) was obtained at two widespread peatland ecosystems - paludified spruce forest and the adjacent ombrotrophic bog in the southern taiga of west Russia using 6 years of paired eddy covariance flux measurements. Both positive and negative annual and growing season air temperature and precipitation anomalies were observed in the period of measurement (2015-2020). Flux measurements showed that, in spite of the lower growing season TER (332 +/- 17 ... 339 +/- 15 gC m(-2)) and GPP (442 +/- 13 ... 464 +/- 11 gC m(-2)) rates, the bog had a higher CO2 uptake rates (NEE was -132 +/- 11... -108 +/- 6) than the forest, except for the warmest and the wettest year of the period (2020), and was an atmospheric CO2 sink in the selected years, while the forest was a CO2 sink or source, depending on the environmental conditions. Growing season NEE at the forest site was between -142 +/- 48 and 28 +/- 40 gC m(-2), TER between 1135 +/- 64 and 1366 +/- 58 gC m(-2), and GPP between 1207 +/- 66 and 1462 +/- 107 gC m(-2). Annual NEE at the forest was between -62 +/- 49 and 145 +/- 41 gC m(-2), TER between 1429 +/- 87 and 1652 +/- 44 C m(-2), and GPP between 1345 +/- 89 and 1566 +/- 41 gC m-2, respectively. Under the anomalously warm winter conditions with sparse and thin snow cover (2019/2020), the increased daily GPP, TER, and net CO2 uptake at the forest was observed, while at the bog, the changes in CO2 fluxes between the warm and cold winters were not significant. This study suggests that the warming in winter can increase the CO2 uptake of the paludified spruce forests of the southern taiga in non-growing seasons.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000938006400001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273509
作者单位	Russian Academy of Sciences; Saratov Scientific Center of the Russian Academy of Sciences; Severtsov Institute of Ecology & Evolution; HSE University (National Research University Higher School of Economics)
推荐引用方式 GB/T 7714	Mamkin, Vadim,Avilov, Vitaly,Ivanov, Dmitry,et al. Interannual variability in the ecosystem CO2 fluxes at a paludified spruce forest and ombrotrophic bog in the southern taiga[J],2023,23(3):19.
APA	Mamkin, Vadim,Avilov, Vitaly,Ivanov, Dmitry,Varlagin, Andrey,&Kurbatova, Julia.(2023).Interannual variability in the ecosystem CO2 fluxes at a paludified spruce forest and ombrotrophic bog in the southern taiga.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(3),19.
MLA	Mamkin, Vadim,et al."Interannual variability in the ecosystem CO2 fluxes at a paludified spruce forest and ombrotrophic bog in the southern taiga".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.3(2023):19.