Soil C/N influences the carbon flux and partitioning in control and fertilized mini-plots of Pinus radiata in New Zealand

Patterns of carbon flux and partitioning were examined in highly stocked (40,000 stems ha-1) control and fertilized mini-plots of Pinus radiata D. Don at five sites, which covered a wide climatic and edaphic gradient on the South Island of New Zealand. The gross-primary productivity (GPP) and the pa...

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Autores principales:	Bown,Horacio E, Watt,Michael S, Clinton,Peter W, Mason,Euan G
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2011
Materias:	Gross- primary productivity net-primary productivity nitrogen Pinus radiata D. Don phosphorus total below-ground carbon flux whole carbon budget
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000200013
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spelling	oai:scielo:S0718-162020110002000132011-09-01Soil C/N influences the carbon flux and partitioning in control and fertilized mini-plots of Pinus radiata in New ZealandBown,Horacio EWatt,Michael SClinton,Peter WMason,Euan G Gross- primary productivity net-primary productivity nitrogen Pinus radiata D. Don phosphorus total below-ground carbon flux whole carbon budget Patterns of carbon flux and partitioning were examined in highly stocked (40,000 stems ha-1) control and fertilized mini-plots of Pinus radiata D. Don at five sites, which covered a wide climatic and edaphic gradient on the South Island of New Zealand. The gross-primary productivity (GPP) and the partitioning of the GPP to the above- and below-ground productivity and respiration were determined using a carbon budget approach. All of the components of the GPP, the above-ground net primary productivity (ANPP [r² = 0.67, P ≤ 0.01]), above-ground plant respiration (APR [r² = 0.66, P ≤ 0.01]), and total below-ground carbon flux (TBCF [r² = 0.41, P ≤ 0.01]) significantly increased with the GPP, but the ANPP:GPP, APR:GPP and TBCF:GPP ratios were not significantly correlated to the GPP (P > 0.41). The TBCF:GPP ratio significantly increased with the soil C:N ratio (r² = 0.93, P ≤ 0.01), with a concomitant decrease in the APR:GPP ratio (r² = -0.88, P < 0.001) without a significant effect on the ANPP:GPP ratio (P > 0.32). None of these fractions were correlated to the soil total or extractable phosphorus (P > 0.32). Although periodic and intensive measurements were required to determine the whole carbon budget in the ten plots, by necessity, the number of sites was limited, and, therefore, our results would require further confirmation using whole carbon budgets from a wider range of soil and environmental conditions.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.38 n.2 20112011-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000200013en10.4067/S0718-16202011000200013
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Gross- primary productivity net-primary productivity nitrogen Pinus radiata D. Don phosphorus total below-ground carbon flux whole carbon budget
spellingShingle	Gross- primary productivity net-primary productivity nitrogen Pinus radiata D. Don phosphorus total below-ground carbon flux whole carbon budget Bown,Horacio E Watt,Michael S Clinton,Peter W Mason,Euan G Soil C/N influences the carbon flux and partitioning in control and fertilized mini-plots of Pinus radiata in New Zealand
description	Patterns of carbon flux and partitioning were examined in highly stocked (40,000 stems ha-1) control and fertilized mini-plots of Pinus radiata D. Don at five sites, which covered a wide climatic and edaphic gradient on the South Island of New Zealand. The gross-primary productivity (GPP) and the partitioning of the GPP to the above- and below-ground productivity and respiration were determined using a carbon budget approach. All of the components of the GPP, the above-ground net primary productivity (ANPP [r² = 0.67, P ≤ 0.01]), above-ground plant respiration (APR [r² = 0.66, P ≤ 0.01]), and total below-ground carbon flux (TBCF [r² = 0.41, P ≤ 0.01]) significantly increased with the GPP, but the ANPP:GPP, APR:GPP and TBCF:GPP ratios were not significantly correlated to the GPP (P > 0.41). The TBCF:GPP ratio significantly increased with the soil C:N ratio (r² = 0.93, P ≤ 0.01), with a concomitant decrease in the APR:GPP ratio (r² = -0.88, P < 0.001) without a significant effect on the ANPP:GPP ratio (P > 0.32). None of these fractions were correlated to the soil total or extractable phosphorus (P > 0.32). Although periodic and intensive measurements were required to determine the whole carbon budget in the ten plots, by necessity, the number of sites was limited, and, therefore, our results would require further confirmation using whole carbon budgets from a wider range of soil and environmental conditions.
author	Bown,Horacio E Watt,Michael S Clinton,Peter W Mason,Euan G
author_facet	Bown,Horacio E Watt,Michael S Clinton,Peter W Mason,Euan G
author_sort	Bown,Horacio E
title	Soil C/N influences the carbon flux and partitioning in control and fertilized mini-plots of Pinus radiata in New Zealand
title_short	Soil C/N influences the carbon flux and partitioning in control and fertilized mini-plots of Pinus radiata in New Zealand
title_full	Soil C/N influences the carbon flux and partitioning in control and fertilized mini-plots of Pinus radiata in New Zealand
title_fullStr	Soil C/N influences the carbon flux and partitioning in control and fertilized mini-plots of Pinus radiata in New Zealand
title_full_unstemmed	Soil C/N influences the carbon flux and partitioning in control and fertilized mini-plots of Pinus radiata in New Zealand
title_sort	soil c/n influences the carbon flux and partitioning in control and fertilized mini-plots of pinus radiata in new zealand
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000200013
work_keys_str_mv	AT bownhoracioe soilcninfluencesthecarbonfluxandpartitioningincontrolandfertilizedminiplotsofpinusradiatainnewzealand AT wattmichaels soilcninfluencesthecarbonfluxandpartitioningincontrolandfertilizedminiplotsofpinusradiatainnewzealand AT clintonpeterw soilcninfluencesthecarbonfluxandpartitioningincontrolandfertilizedminiplotsofpinusradiatainnewzealand AT masoneuang soilcninfluencesthecarbonfluxandpartitioningincontrolandfertilizedminiplotsofpinusradiatainnewzealand
_version_	1714202132714881024

Soil C/N influences the carbon flux and partitioning in control and fertilized mini-plots of Pinus radiata in New Zealand

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