Short-term effects of thinning on soil CO2 , N2 O and CH4 fluxes in Mediterranean forest ecosystems

The Science of the Total Environment
Gianluigi MazzaAlessandra Lagomarsino

Abstract

In Mediterranean ecosystems an increasing demand for in situ trace gas exchange data is emerging to enhance the adaptation and mitigation strategies under forest degradation. Field-chamber green-house gas fluxes and site characteristics were analysed in two Mediterranean peri-urban pine forests showing degradation symptoms. We examined the effect of different thinning interventions on soil CO2, CH4 and N2O fluxes, addressing the relationships with the environmental variables and C and N contents along forest floor-soil layers. Soil temperature resulted as the main driving variable for CO2 efflux and CH4 uptake. Soil moisture content and organic matter availability affected CO2 emission patterns in the two sites. N2O fluxes showed a positive correlation with soil moisture under wetter climatic conditions only. GHG fluxes showed significant correlations with C and N content of both forest floor and mineral soil, especially in the deepest layers, suggesting that it should be considered, together with environmental variables when accounting GHG fluxes in degraded forests. Short-term effects of thinning on CO2 emissions were dependent on disturbance induced by logging operations and organic matter inputs. After thinning CH4 uptake i...Continue Reading

References

Mar 26, 2010·Nature·Ben Bond-Lamberty, Allison Thomson
May 29, 2013·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Klaus Butterbach-BahlSophie Zechmeister-Boltenstern
Nov 1, 2013·Journal of Environmental Quality·Maria Arlene Adviento-BorbeBruce A Linquist
Dec 2, 2015·Environmental Science and Pollution Research International·Héctor García-GómezRocío Alonso

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Citations

Sep 13, 2020·The Science of the Total Environment·Alessandra LagomarsinoRoberta Pastorelli

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