Carbon budget recovery and role of coarse woody debris in post-logging forest ecosystems of Southern Siberia

Forest harvesting is a major human-caused disturbance affecting carbon budgets in forest ecosystems. This study was concerned with post-logging carbon pool changes in Scots pine (Pinus sylvestris) and Siberian fir (Abies sibirica) stands. To understand carbon budget recovery trends following logging...

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Autor principal:	Mukhortova,Ludmila
Lenguaje:	English
Publicado:	Universidad Austral de Chile, Facultad de Ciencias Forestales 2012
Materias:	carbon budget logging phytomass coarse woody debris decomposition
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002012000300005
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spelling	oai:scielo:S0717-920020120003000052014-11-05Carbon budget recovery and role of coarse woody debris in post-logging forest ecosystems of Southern SiberiaMukhortova,Ludmila carbon budget logging phytomass coarse woody debris decomposition Forest harvesting is a major human-caused disturbance affecting carbon budgets in forest ecosystems. This study was concerned with post-logging carbon pool changes in Scots pine (Pinus sylvestris) and Siberian fir (Abies sibirica) stands. To understand carbon budget recovery trends following logging, carbon stock and fluxes were measured in stands differing in time since logging. In both Scots pine and fir stands disturbed by logging, the tree phytomass contribution to the carbon budget decreased drastically, whereas the coarse woody debris (CWD) carbon pool exhibited a marked increase. Sixty years following logging, the Scots pine stand carbon storage was almost 70 % of that prior to logging and the ratio between the phytomass and soil organic matter was the same as before the disturbance. While the phytomass carbon showed a similar trend in the fir stand of the same age, it was less than on the control stand. In a 50-55-year-old fir stand, 26 years since harvesting, the phytomass carbon recovered only by 15 %. Siberian fir and Scots pine logging sites differed in CWD loading and decomposition rate. The phytomass dynamics and CWD loading values obtained suggest that Scots pine stands which have experienced logging are most likely carbon sinks, as was clear from the phytomass production exceeding organic matter decomposition-caused fluxes. Conversely, logged fir ecosystems are likely to be sources of carbon to the atmosphere due to a large CWD loading, faster rate of its decomposition, and slow phytomass increment.info:eu-repo/semantics/openAccessUniversidad Austral de Chile, Facultad de Ciencias ForestalesBosque (Valdivia) v.33 n.3 20122012-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002012000300005en10.4067/S0717-92002012000300005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	carbon budget logging phytomass coarse woody debris decomposition
spellingShingle	carbon budget logging phytomass coarse woody debris decomposition Mukhortova,Ludmila Carbon budget recovery and role of coarse woody debris in post-logging forest ecosystems of Southern Siberia
description	Forest harvesting is a major human-caused disturbance affecting carbon budgets in forest ecosystems. This study was concerned with post-logging carbon pool changes in Scots pine (Pinus sylvestris) and Siberian fir (Abies sibirica) stands. To understand carbon budget recovery trends following logging, carbon stock and fluxes were measured in stands differing in time since logging. In both Scots pine and fir stands disturbed by logging, the tree phytomass contribution to the carbon budget decreased drastically, whereas the coarse woody debris (CWD) carbon pool exhibited a marked increase. Sixty years following logging, the Scots pine stand carbon storage was almost 70 % of that prior to logging and the ratio between the phytomass and soil organic matter was the same as before the disturbance. While the phytomass carbon showed a similar trend in the fir stand of the same age, it was less than on the control stand. In a 50-55-year-old fir stand, 26 years since harvesting, the phytomass carbon recovered only by 15 %. Siberian fir and Scots pine logging sites differed in CWD loading and decomposition rate. The phytomass dynamics and CWD loading values obtained suggest that Scots pine stands which have experienced logging are most likely carbon sinks, as was clear from the phytomass production exceeding organic matter decomposition-caused fluxes. Conversely, logged fir ecosystems are likely to be sources of carbon to the atmosphere due to a large CWD loading, faster rate of its decomposition, and slow phytomass increment.
author	Mukhortova,Ludmila
author_facet	Mukhortova,Ludmila
author_sort	Mukhortova,Ludmila
title	Carbon budget recovery and role of coarse woody debris in post-logging forest ecosystems of Southern Siberia
title_short	Carbon budget recovery and role of coarse woody debris in post-logging forest ecosystems of Southern Siberia
title_full	Carbon budget recovery and role of coarse woody debris in post-logging forest ecosystems of Southern Siberia
title_fullStr	Carbon budget recovery and role of coarse woody debris in post-logging forest ecosystems of Southern Siberia
title_full_unstemmed	Carbon budget recovery and role of coarse woody debris in post-logging forest ecosystems of Southern Siberia
title_sort	carbon budget recovery and role of coarse woody debris in post-logging forest ecosystems of southern siberia
publisher	Universidad Austral de Chile, Facultad de Ciencias Forestales
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002012000300005
work_keys_str_mv	AT mukhortovaludmila carbonbudgetrecoveryandroleofcoarsewoodydebrisinpostloggingforestecosystemsofsouthernsiberia
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Carbon budget recovery and role of coarse woody debris in post-logging forest ecosystems of Southern Siberia

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