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Impacts of stump harvesting on carbon dioxide, methane and nitrous oxide fluxes

Vestin, Patrik and Molder, Meelis and Kljun, Natascha and Cai, Zhanzhang and Hasan, Abdulghani and Holst, Jutta and Klemedtsson, Leif and Lindroth, Anders (2022). Impacts of stump harvesting on carbon dioxide, methane and nitrous oxide fluxes. Iforest. 15 , 148-162
[Research article]

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Abstract

During 2010-2013, we investigated the effects of stump harvesting on greenide (N2O) with the flux-gradient technique at four experimental plots in a hemiboreal forest in Sweden. All plots were clear-cut and soil scarified and two of the plots were additionally stump harvested. The two clear-cut plots served as control plots. Due to differences in topography, we had one wetter and one drier plot of each treatment. All plots exhibited substantial emissions of GHGs and we noted significant effects of wetness on CO2, CH4 and N2O fluxes within treatments and significant effects of stump harvesting on CO2 and N2O fluxes at the dry plots. The CO2 emissions were lower at the dry stump harvested plot than at the dry control, but when estimated emissions from the removed stumps were added, total CO2 emissions were higher at the stump harvested plot, indicating a small enhancement of soil respiration. In addition, we noted significant emissions of N2O at this plot. At the wet plots, CO2 emissions were higher at the stump harvested plot, also suggesting a treatment effect but differences in wetness and vegetation cover at these plots make this effect more uncertain. At the wet plots, we noted sustained periods (weeks to months) of net N2O uptake. During the year with simultaneous measurements of the abovementioned GHGs, GHG budgets were 1.224??103 and 1.442??103 gm-2 of CO2-equivalents at the wet and dry stump harvested plots, respectively, and 1.070??103 and 1.696??103 gm-2 of CO2-equivalents at the wet and dry control plots, respectively. CO2 fluxes dominated GHG budgets at all plots but N2O contributed with 17% at the dry stump harvested plot. For the full period 2010-2013, total carbon (CO2+CH4) budgets were 4.301??103 and 4.114??103 g m-2 of CO2-eqvivalents at the wet and dry stump harvest plots, respectively and 4.107??103 and 5.274??103 gm-2 of CO2-equivalents at the wet and dry control plots, respectively. Our results support recent studies suggesting that stump harvesting does not result in substantial increase in CO2 emissions but uncertainties regarding GHG fluxes (especially N2O) remain and more long-term measurements are needed before robust conclusions can be drawn.

Authors/Creators:Vestin, Patrik and Molder, Meelis and Kljun, Natascha and Cai, Zhanzhang and Hasan, Abdulghani and Holst, Jutta and Klemedtsson, Leif and Lindroth, Anders
Title:Impacts of stump harvesting on carbon dioxide, methane and nitrous oxide fluxes
Series Name/Journal:Iforest
Year of publishing :2022
Volume:15
Page range:148-162
Number of Pages:15
Publisher:SISEF-SOC ITALIANA SELVICOLTURA ECOL FORESTALE
ISSN:1971-7458
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Environmental Sciences (social aspects to be 507)
Keywords:CO2, CH4, N2O, Greenhouse Gas Budget, Stump Harvesting, Climate Change Mitigation, Forest Management, Hemiboreal Forest
URN:NBN:urn:nbn:se:slu:epsilon-p-117298
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-117298
Additional ID:
Type of IDID
DOI10.3832/ifor4086-015
Web of Science (WoS)000797676900001
ID Code:28170
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Landscape Architecture, Planning and Management
Deposited By: SLUpub Connector
Deposited On:01 Jun 2022 12:26
Metadata Last Modified:01 Jun 2022 12:31

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