Laura Heimsch, Karoliina Huusko, Kristiina Karhu, Kevin Z. Mganga, Subin Kalu, Liisa Kulmala, Effects of a tree row on greenhouse gas fluxes, growing conditions and soil microbial communities on an oat field in Southern Finland, Agriculture, Ecosystems & Environment, Volume 352, 2023, 108525, ISSN 0167-8809, https://doi.org/10.1016/j.agee.2023.108525
Effects of a tree row on greenhouse gas fluxes, growing conditions and soil microbial communities on an oat field in Southern Finland
|Author:||Heimsch, Laura1; Huusko, Karoliina2; Karhu, Kristiina3,4;|
1Finnish Meteorological Institute, P.O. Box 503, FI-00101 Helsinki, Finland
2Ecology and Genetics Research Unit, P.O. Box 3000, FI-90014 University of Oulu, Finland
3Department of Forest Sciences, P.O. Box 27, FI-00014 University of Helsinki, Finland
4Helsinki Institute of Life Science (HiLIFE), P. O. Box 56 00014 University of Helsinki, Finland
5Copernicus Institute of Sustainable Development, Utrecht University, Princetonlaan 8a, 3584 CB Utrecht, Netherlands
6Department of Agricultural Sciences, P.O. Box 27, FI-00014 University of Helsinki, Finland
7Institute for Atmospheric and Earth System Research, Forest Sciences, P.O. Box 27, FI-00014 University of Helsinki, Finland
|Online Access:||PDF Full Text (PDF, 4.2 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe20231101142305
|Publish Date:|| 2023-11-01
Agricultural ecosystems are facing critical loss of biodiversity, soil nutrients, and cultural values. Intensive crop production has caused landscape homogenisation, with trees and hedges increasingly disappearing from agricultural land. Changes in farming practices are essential to increase biodiversity and improve soil biogeochemical processes, such as nutrient cycling, soil carbon uptake, and sequestration, as well as to improve the resilience and fertility of farming systems. Agroforestry is an important practice for implementing and improving natural and cultural value of landscapes, but in northern countries, agroforestry methods remain rarely utilised. Our study was conducted in Southern Finland on an agricultural field where a row of willow and alder was planted 6 years prior to our study. We concentrated on the effects of the tree row on crop growing conditions and how far from the trees possible impacts can be observed. We studied soil properties, carbon dioxide (CO₂), nitrous oxide (N₂O), and methane (CH₄) exchange, and soil microbial communities. The impact of trees on crop growing conditions, biomass production, and greenhouse gas fluxes was modest and did not extend further than few meters from the tree row in the warm and dry growing season of 2019. N₂O and CH₄ fluxes were negligible and the tree row did not increase greenhouse gas emissions from soil. Soil microbial diversity was clearly improved by the presence of trees due to more diverse habitats. The tree row also slightly decreased the estimated annual net emissions of carbon into the atmosphere. Due to positive indications of the effects of agroforestry on biodiversity and carbon uptake, we highly recommend further studies within various agroforestry practices in Nordic countries.
Agriculture, ecosystems & environment
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
218 Environmental engineering
1172 Environmental sciences
Tiina and Antti Herlin’s foundation, The Strategic Research Council at The Academy of Finland (decision no. 327214 and 335204) and The Academy of Finland Flagship Program (decision no. 337552) are acknowledged for financial support.
© 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).