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Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Soil organic matter stabilization and carbon-cycling enzyme activity are affected by land management
Author(s): Blonska, Ewa
Lasota, Jaroslaw
da Silva, Gilka Rocha Vasconcelos
Vanguelova, Elena
Ashwood, Frank
Tibbett, Mark
Watts, Kevin
Lukac, Martin
Keywords: enzyme activity
soil carbon accumulation
soil organic matter fraction
Issue Date: 2020
Citation: Blonska E, Lasota J, da Silva GRV, Vanguelova E, Ashwood F, Tibbett M, Watts K & Lukac M (2020) Soil organic matter stabilization and carbon-cycling enzyme activity are affected by land management. Annals of Forest Research, 63 (1), pp. 71-86.
Abstract: Increasing carbon (C) storage in soil is a key aspect of climate change mitigation strategies and requires an understanding of the impacts of land management on soil C cycling. The primary aim of this study is to investigate how land management impacts key soil organic matter stabilization and cycling processes affecting soil C storage. Soil sampling was undertaken across seven transects crossing the boundary between agriculture and forestry. The transects covered 3 pasture (AP) and 4 arable (AA) fields combined with 3 young secondary woodlands (50-60 years old - WY) and 4 mature/ancient semi-natural woodlands (110 to >400 years old – WM). Physical fractionation of soil organic matter pools was performed, together with pH, carbon and nitrogen content, as well as activity of four enzymes associated with C transformation in the soil. Woodland soils were associated with significantly higher content of light fraction C and greater enzyme activity in comparison to agricultural soils. Enzyme activity and soil organic C decreased with soil depth regardless of land-use type. We did not, however, observe any effect of the distance from the land use boundary on either enzyme activity and soil C pools. Our results indicate that analysis of soil organic matter (SOM) fractions can act as an indicator of decomposition rates of SOM in forest and agricultural ecosystems.
DOI Link: 10.15287/afr.2019.1837
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