Effects of climatic changes on carbon dioxide and water vapor fluxes in boreal forest ecosystems of European part of Russia

Olchev, Alexander; Novenko, Elena; Desherevskaya, O.; Krasnorutskaya, Kristina; Kurbatova, S. A.

doi:10.1088/1748-9326/4/4/045007

Cited by 15 publications

(7 citation statements)

References 10 publications

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“…The gaseous exchange between the atmosphere and the peatlands is governed by photosynthetic fixation of CO 2 from the atmosphere and by soil and vegetation respiration losses of CO 2 . The balance between them is known as the net ecosystem exchange (NEE) of CO 2 (Bubier et al 2003;Olchev et al 2009;Golovatskaya and Dyukarev 2012;Helfer et al 2015). The other major gaseous emission of C into the atmosphere is accounts for methane (CH 4 ), which is produced via anoxic decay of the soil organic matter (Saunois et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Net Ecosystem Exchange, Gross Primary Production And Ecosystem Respiration In Ridge-Hollow Complex At Mukhrino Bog

Dyukarev

Godovnikov²,

Karpov³

et al. 2019

GES

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The continuous field measurements of net ecosystem exchange (NEE) of CO 2 were provided at ridge-hollow oligotrophic bog in the Middle Taiga zone of West Siberia, Russia in 2017-2018. The model of net ecosystem exchange of CO 2 was suggested to describe the influence of different environmental factors on NEE and to estimate the total carbon budget of the bog over the growing season. The model uses air and soil temperature, incoming photosynthetically active radiation (PAR) and water table depth, as the key factors influencing gross primary production (GPP) and ecosystem respiration (ER). The model coefficients were calibrated using the data collected by automated soil CO 2 flux system with two transparent long-term chambers placed at large hollow and small ridge sites. Experimental and modeling results showed that the Mukhrino bog acted over the study period as a carbon sink, with an average NEE of-87.7 gC m-2 at the hollow site and-50.2 gC m-2 at the ridge site. GPP was-344.8 and-228.5 gC m-2 whereas ER was 287.6 and 140.9 gC m-2 at ridge and hollow sites, respectively. Despite of a large difference in NEE estimates between 2017 and 2018 the growing season variability of NEE were quite similar.

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Section: Introductionmentioning

confidence: 99%

Net Ecosystem Exchange, Gross Primary Production And Ecosystem Respiration In Ridge-Hollow Complex At Mukhrino Bog

Dyukarev

Godovnikov²,

Karpov³

et al. 2019

GES

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“…The increased demand for meat and dairy products have produced strong pressure on agro-pastoral lands where transitional economies with frequent institutional shifts, water resource scarcity and climate conditions interact to alter DLB ecosystems and societies. The geopolitical systems are diverse, but most countries in the region are either developing or transitional economies with great demands for meat and dairy production (Ojima and Chuluun 2008).…”

Section: Research Focus 6: Pressure On Agriculture and Pastoral Produmentioning

confidence: 99%

Northern Eurasia Future Initiative (NEFI): facing the challenges and pathways of global change in the twenty-first century

Groisman

Shugart

Kicklighter

et al. 2017

Prog Earth Planet Sci

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During the past several decades, the Earth system has changed significantly, especially across Northern Eurasia. Changes in the socioeconomic conditions of the larger countries in the region have also resulted in a variety of regional environmental changes that can have global consequences. The Northern Eurasia Future Initiative (NEFI) has been designed as an essential continuation of the Northern Eurasia Earth Science Partnership Initiative (NEESPI), which was launched in 2004. NEESPI sought to elucidate all aspects of ongoing environmental change, to inform societies and, thus, to better prepare societies for future developments. A key principle of NEFI is that these developments must now be secured through science-based strategies codesigned with regional decision-makers to lead their societies to prosperity in the face of environmental and institutional challenges. NEESPI scientific research, data, and models have created a solid knowledge base to support the NEFI program. This paper presents the NEFI research vision consensus based on that knowledge. It provides the reader with samples of recent accomplishments in regional studies and formulates new NEFI science questions. To address these questions, nine research foci are identified and their selections are briefly justified. These foci include warming of the Arctic; changing frequency, pattern, and intensity of extreme and inclement environmental conditions; retreat of the cryosphere; changes in terrestrial water cycles; changes in the biosphere; pressures on land use; changes in infrastructure; societal actions in response to environmental change; and quantification of Northern Eurasia's role in the global Earth system. Powerful feedbacks between the Earth and human systems in Northern Eurasia (e.g., mega-fires, droughts, depletion of the cryosphere essential for water supply, retreat of sea ice) result from past and current human activities (e.g., large-scale water withdrawals, land use, and governance change) and potentially restrict or provide new opportunities for future human activities. Therefore, we propose that integrated assessment models are needed as the final stage of global change assessment. The overarching goal of this NEFI modeling effort will enable evaluation

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“…To describe the dependence of ET and TR on air temperature a quadratic type of function is used whereas the dependence of ET and TR on precipitation is parameterized by a linear function. The dependence of ET and TR on the proportion of spruce trees in a mixed forest stand is also parameterized by a quadratic function that allows the description of e.g., the higher ET and TR for the mixed (spruce-deciduous) forest in comparison with monospecific spruce or deciduous ones of the same tree age, biomass, height, etc (Olchev et al 2009).…”

Section: Regression Model For Reconstruction Of Pet Et and Tr Of Formentioning

confidence: 99%

“…Air temperature, precipitation and species compositions of the forest during the Holocene will be reconstructed from available paleobotanic data for the study area (Novenko et al 2009b(Novenko et al , 2009a. The coefficients in the regression model will be determined from statistical analysis of the results of modeling estimations of ET, PET and TR provided by a process-based Mixfor-SVAT model (Oltchev et al 2002a, Olchev et al 2009…”

Section: Introductionmentioning

confidence: 99%

Estimation of potential and actual evapotranspiration of boreal forest ecosystems in the European part of Russia during the Holocene

Olchev

Novenko

2011

Environ. Res. Lett.

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A simple regression model for calculating annual actual evapotranspiration (ET) and potential evapotranspiration (PET), as well as annual transpiration (TR) of mature boreal forests grown in the European part of Russia in the Holocene using paleoclimatic and paleobotanical data (air temperature, precipitation, forest species compositions) is presented. The model is based on nonlinear approximations of annual values of ET, TR and PET obtained by the Levenberg-Marquardt method using the results of numerical simulations of ET, TR and PET provided by a process-based Mixfor-SVAT model for forests with different species compositions under various thermal and moistening conditions. The results of ET, TR and PET reconstructions for the Holocene show large variability and high correlation with the air temperature pattern. Minimal values of ET and PET are obtained for the Younger Dryas cold phase (11.0-10.0 14 C kyr BP) when ET varied between 320 and 370 mm yr −1 and PET varied between 410 and 480 mm yr −1 . During the Late Atlantic periods of the Holocene (4.5-5.1 14 C kyr BP), ET and PET reached maximal values (ET: 430-450 mm yr −1 and PET: 550-570 mm yr −1 ).

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Effects of climatic changes on carbon dioxide and water vapor fluxes in boreal forest ecosystems of European part of Russia

Cited by 15 publications

References 10 publications

Net Ecosystem Exchange, Gross Primary Production And Ecosystem Respiration In Ridge-Hollow Complex At Mukhrino Bog

Net Ecosystem Exchange, Gross Primary Production And Ecosystem Respiration In Ridge-Hollow Complex At Mukhrino Bog

Northern Eurasia Future Initiative (NEFI): facing the challenges and pathways of global change in the twenty-first century

Estimation of potential and actual evapotranspiration of boreal forest ecosystems in the European part of Russia during the Holocene

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