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Carbon balance of a...
Carbon balance of a grazed savanna grassland ecosystem in South Africa
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- Räsänen, Matti (författare)
- University of Helsinki
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- Aurela, Mika (författare)
- Finnish Meteorological Institute
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- Vakkari, Ville (författare)
- Finnish Meteorological Institute
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- Beukes, Johan P. (författare)
- North-West University
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- Tuovinen, Juha-Pekka (författare)
- Finnish Meteorological Institute
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- Van Zyl, Pieter G. (författare)
- North-West University
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- Josipovic, Miroslav (författare)
- North-West University
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- Venter, Andrew D. (författare)
- North-West University
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- Jaars, Kerneels (författare)
- North-West University
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- Siebert, Stefan J. (författare)
- North-West University
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- Laurila, Tuomas (författare)
- Finnish Meteorological Institute
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- Rinne, Janne (författare)
- Lund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science,University of Helsinki,Finnish Meteorological Institute
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- Laakso, Lauri (författare)
- North-West University,Finnish Meteorological Institute
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(creator_code:org_t)
- 2017-03-07
- 2017
- Engelska 16 s.
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Ingår i: Biogeosciences. - : Copernicus GmbH. - 1726-4170 .- 1726-4189. ; 14:5, s. 1039-1054
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://www.biogeosc...
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https://lup.lub.lu.s...
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https://doi.org/10.5...
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Abstract
Ämnesord
Stäng
- Tropical savannas and grasslands are estimated to contribute significantly to the total primary production of all terrestrial vegetation. Large parts of African savannas and grasslands are used for agriculture and cattle grazing, but the carbon flux data available from these areas are limited. This study explores carbon dioxide fluxes measured with the eddy covariance method for 3 years at a grazed savanna grassland in Welgegund, South Africa. The tree cover around the measurement site, grazed by cattle and sheep, was around 15 %. The night-time respiration was not significantly dependent on either soil moisture or soil temperature on a weekly temporal scale, whereas on an annual timescale higher respiration rates were observed when soil temperatures were higher. The carbon dioxide balances of the years 2010-2011, 2011-2012 and 2012-2013 were-85 ± 16, 67 ± 20 and 139 ± 13 gC m-2yr-1, respectively. The yearly variation was largely determined by the changes in the early wet season fluxes (September to November) and in the mid-growing season fluxes (December to January). Early rainfall enhanced the respiratory capacity of the ecosystem throughout the year, whereas during the mid-growing season high rainfall resulted in high carbon uptake.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Multidisciplinär geovetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geosciences, Multidisciplinary (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
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Räsänen, Matti
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Aurela, Mika
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Vakkari, Ville
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Beukes, Johan P.
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Tuovinen, Juha-P ...
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Van Zyl, Pieter ...
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visa fler...
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Josipovic, Miros ...
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Venter, Andrew D ...
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Jaars, Kerneels
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Siebert, Stefan ...
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Laurila, Tuomas
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Rinne, Janne
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Laakso, Lauri
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Geovetenskap och ...
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och Multidisciplinär ...
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- NATURVETENSKAP
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NATURVETENSKAP
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och Geovetenskap och ...
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och Klimatforskning
- Artiklar i publikationen
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Biogeosciences
- Av lärosätet
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Lunds universitet