Biochar amendment increases tree growth in nutrient-poor, young Scots pine stands in Finland

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http://hdl.handle.net/10138/345931

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Palviainen , M , Aaltonen , H , Laurén , A , Köster , K , Berninger , F , Ojala , A & Pumpanen , J 2020 , ' Biochar amendment increases tree growth in nutrient-poor, young Scots pine stands in Finland ' , Forest Ecology and Management , vol. 474 , 118362 . https://doi.org/10.1016/j.foreco.2020.118362

Title: Biochar amendment increases tree growth in nutrient-poor, young Scots pine stands in Finland
Author: Palviainen, Marjo; Aaltonen, Heidi; Laurén, Ari; Köster, Kajar; Berninger, Frank; Ojala, Anne; Pumpanen, Jukka
Contributor organization: Forest Soil Science and Biogeochemistry
Department of Forest Sciences
Forest Ecology and Management
Ecosystem processes (INAR Forest Sciences)
Institute for Atmospheric and Earth System Research (INAR)
Ecosystems and Environment Research Programme
Helsinki Institute of Sustainability Science (HELSUS)
Viikki Plant Science Centre (ViPS)
Anne Ojala / Principal Investigator
Date: 2020-10-15
Language: eng
Number of pages: 8
Belongs to series: Forest Ecology and Management
ISSN: 0378-1127
DOI: https://doi.org/10.1016/j.foreco.2020.118362
URI: http://hdl.handle.net/10138/345931
Abstract: Biochar is charred material formed by the pyrolysis of organic matter. The addition of biochar to soil may offer a chance to mitigate climate change by increasing soil carbon stocks, improving soil fertility and enhancing plant growth. Vast majority of biochar studies are conducted in agricultural soils, and field experiments studying the effect of biochar on tree growth in boreal forests are lacking. We applied spruce biochar amendments of 5 and 10 Mg ha(-1) to the soil surface in young boreal Scots pine (Pinus sylvestris L.) forests in Southern Finland and studied the responses in tree growth and needle nitrogen (N) and N-15 concentrations during the first three years after treatment. The biochar amendment of 10 Mg ha(-1) increased the diameter growth of dominant trees significantly, on average by 1 mm year(-1), which corresponded to 25% increase compared to control during the three years study period. The positive growth responses were less pronounced in height than in diameter growth. The biochar amendment of 5 Mg ha(-1) increased the height growth of dominant trees by 0.16 m or 12% compared to the control during three years. Biochar amendments did not affect N and N-15 concentrations in needles. The results suggest that wood biochar amendment can be a climate-friendly method to increase tree biomass production in nutrient poor, xeric, young Scots pine forests.
Subject: 4112 Forestry
11831 Plant biology
Biochar
Growth
Nitrogen
Soil amendment
Soil management
NORWAY SPRUCE
SEEDLING GROWTH
SOIL PROPERTIES
GREENHOUSE-GAS
N2O EMISSIONS
FOREST SOILS
FERTILIZATION
BIOMASS
CARBON
DELTA-N-15
Peer reviewed: Yes
Rights: cc_by_nc_nd
Usage restriction: openAccess
Self-archived version: acceptedVersion


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