Zobraziť v EDS

Carbon allocation to roots of suppressed Norway spruce increases immediately after selection harvest

Uložené v:
Podrobná bibliografia
Názov: Carbon allocation to roots of suppressed Norway spruce increases immediately after selection harvest
Autori: Lehtonen, Aleksi, Heikkinen, Juha, Boroski, Chainey A., Tikkasalo, Olli Pekka, Rinne-Garmston, Katja T., Sahlstedt, Elina, Korkiakoski, Mika, Kärkönen, Anna, Lintunen, Anna, Mäkinen, Harri, Peltoniemi, Mikko, de Quesada, Gonzalo, Salmon, Yann, Young, Giles, Mäkipää, Raisa, Oren, Ram
Prispievatelia: Department of Agricultural Sciences, Institute for Atmospheric and Earth System Research (INAR), Viikki Plant Science Centre (ViPS), Department of Forest Sciences, Ecosystem processes (INAR Faculty of Agriculture and Forestry), Forest Ecology and Management, Micrometeorology and biogeochemical cycles
Informácie o vydavateľovi: Elsevier B.V.
Rok vydania: 2025
Zbierka: Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto
Predmety: Carbon isotope composition (δC), Continuous-cover forestry (CCF), Harvest release effect, Norway spruce, Root growth, Selection harvest, Forestry
Popis: Selection harvesting in fertile, drained peatlands is an alternative for even-aged forestry, where clearcutting takes place at the end of each rotation period. Avoiding clear-cuts has been promoted due to reducing negative externalities, like nutrient loading to waterways and significant greenhouse gas emissions after harvesting. Our aim was to understand the responses of suppressed Norway spruce trees to selection harvesting. We analysed biomass accumulation and priorities of carbon allocation to stems, proximal roots and distal roots. We quantified carbon isotope composition (delta 13C) and cross-sectional growth of proximal (supporting) roots and distal (water and nutrient transportation) roots. The study took place in a drained, fertile boreal peatland site in southern Finland, where a selection harvest was conducted in 2016, while an area as a control was left untouched. Our results show that suppressed Norway spruce trees increased their cross-sectional growth of proximal roots and distal roots twice as much as that of the stem during the first five years after the selection harvest. The timing and magnitude of carbon allocation to proximal roots and distal roots were immediate and equal, underlining the fact that trees were investing in mechanical support and nutrient and water uptake. These results show that the climate benefits of selection harvest were not delayed. Instead of immediate growth of stems, we found immediate growth of roots. ; Peer reviewed
Druh dokumentu: article in journal/newspaper
Popis súboru: application/pdf
Jazyk: English
Relation: We thank the field staff of the Natural Resources Institute Finland and the Finnish Meteorological Institute for contributing by collecting field data used in this study. The authors would like to thank the ICOS CP for providing the meteorological data used in this study. We would like to thank Natalia Kiuru for assistance in the sample preparation for the LA-IRMS analysis. This work was supported by the Research Council of Finland funding for the BiBiFe project \u201CBiogeochemical and biophysical feedbacks from forest harvesting to climate change\u201D (nr. 325680) and by the Horizon Europe project FORWARDS \u201CThe ForestWard observatory to secure resilience of European forests\u201D (nr. 101084481). KRG acknowledges funding from the European Research Council (ERC, 755865) and the Research Council of Finland (343059). ALi acknowledges funding by the Research Council of Finland \u201CManaging forests for climate change mitigation\u201D (347782, European Union \u2013 NextGenerationEU instrument), \u201CAtmosphere and Climate Competence Center Research Flagship\u201D (ACCC, 337549, 357902), \u201CThe role of bark in tree survival under drought stress\u201D (355142). This work was supported by the Research Council of Finland funding for the BiBiFe project \u201CBiogeochemical and biophysical feedbacks from forest harvesting to climate change\u201D (nr. 325680) and by the Horizon Europe project FORWARDS \u201CThe ForestWard observatory to secure resilience of European forests\u201D (nr. 101084481). KRG acknowledges funding from the European Research Council (ERC, 755865) and the Research Council of Finland (343059). ALi acknowledges funding by the Research Council of Finland \u201CManaging forests for climate change mitigation\u201D (347782, European Union \u2013 NextGenerationEU instrument), \u201CAtmosphere and Climate Competence Center Research Flagship\u201D (ACCC, 337549, 357902), \u201CThe role of bark in tree survival under drought stress\u201D (355142).; We thank the field staff of the Natural Resources Institute Finland and the Finnish Meteorological Institute for contributing by collecting field data used in this study. The authors would like to thank the ICOS CP for providing the meteorological data used in this study. We would like to thank Natalia Kiuru for assistance in the sample preparation for the LA-IRMS analysis.This work was supported by the Research Council of Finland funding for the BiBiFe project "Biogeochemical and biophysical feedbacks from forest harvesting to climate change" (nr. 325680) and by the Horizon Europe project FORWARDS "The ForestWard observatory to secure resilience of European forests" (nr. 101084481) . KRG acknowledges funding from the European Research Council (ERC, 755865) and the Research Council of Finland (343059) . ALi acknowledges funding by the Research Council of Finland "Managing forests for climate change mitigation" (347782, European Union - NextGenerationEU instrument) , "Atmosphere and Climate Competence Center Research Flagship" (ACCC, 337549, 357902) , "The role of bark in tree survival under drought stress" (355142) .; http://hdl.handle.net/10138/594620; 105000657329; 001456118300001
Dostupnosť: http://hdl.handle.net/10138/594620
Rights: cc_by ; info:eu-repo/semantics/openAccess ; openAccess
Prístupové číslo: edsbas.8EECD708
Databáza: BASE
Popis
Abstrakt:Selection harvesting in fertile, drained peatlands is an alternative for even-aged forestry, where clearcutting takes place at the end of each rotation period. Avoiding clear-cuts has been promoted due to reducing negative externalities, like nutrient loading to waterways and significant greenhouse gas emissions after harvesting. Our aim was to understand the responses of suppressed Norway spruce trees to selection harvesting. We analysed biomass accumulation and priorities of carbon allocation to stems, proximal roots and distal roots. We quantified carbon isotope composition (delta 13C) and cross-sectional growth of proximal (supporting) roots and distal (water and nutrient transportation) roots. The study took place in a drained, fertile boreal peatland site in southern Finland, where a selection harvest was conducted in 2016, while an area as a control was left untouched. Our results show that suppressed Norway spruce trees increased their cross-sectional growth of proximal roots and distal roots twice as much as that of the stem during the first five years after the selection harvest. The timing and magnitude of carbon allocation to proximal roots and distal roots were immediate and equal, underlining the fact that trees were investing in mechanical support and nutrient and water uptake. These results show that the climate benefits of selection harvest were not delayed. Instead of immediate growth of stems, we found immediate growth of roots. ; Peer reviewed