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Soil CO(2) Efflux in a Mixed Pine-Oak Forest in Valsaín (Central Spain)
Soil-surface CO(2) efflux and its spatial and temporal variation were investigated in a southern Mediterranean, mixed pine-oak forest ecosystem on the northern slopes of the Sierra de Guadarrama in Spain from February 2006 to July 2006. Measurements of soil CO(2) efflux, soil temperatures, and moist...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
TheScientificWorldJOURNAL
2007
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5901050/ https://www.ncbi.nlm.nih.gov/pubmed/17450294 http://dx.doi.org/10.1100/tsw.2007.7 |
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author | Inclán, Rosa De la Torre, Daniel Benito, Marta Rubio, Agustín |
author_facet | Inclán, Rosa De la Torre, Daniel Benito, Marta Rubio, Agustín |
author_sort | Inclán, Rosa |
collection | PubMed |
description | Soil-surface CO(2) efflux and its spatial and temporal variation were investigated in a southern Mediterranean, mixed pine-oak forest ecosystem on the northern slopes of the Sierra de Guadarrama in Spain from February 2006 to July 2006. Measurements of soil CO(2) efflux, soil temperatures, and moisture were conducted in nine 1963-m(2) sampling plots distributed in a gradient around the ecotone between Pinus sylvestris L. and Quercus pyrenaica Lam. forest stands. Total soil organic matter, Walkey-Black C, particulate organic matter, organic matter fraction below 53 μm, total soil nitrogen content, total soil organic carbon content, and pH were also measured under three representative mature oak, pine, and mixed pine-oak forest stands. Soil respiration showed a typical seasonal pattern with minimums in winter and summer, and maximums in spring, more pronounced in oak and oak-pine stands. Soil respiration values were highest in pine stands during winter and in oak stands during spring and summer. Soil respiration was highly correlated with soil temperatures in oak and pine-oak stands when soil moisture was above a drought threshold of 15%. Below this threshold value, soil moisture was a good predictor of soil respiration in pine stands. Greater soil organic matter, particulate organic matter, Walkey-Black C, total organic C, and total N content in pine compared to oak sites potentially contributed to the greater total soil CO(2) efflux in these stands during the winter. Furthermore, opposing trends in the organic matter fraction below 53 μm and soil respiration between plots suggest that in oak stands, the C forms are less affected by possible changes in use. The effects of soil properties on soil respiration were masked by differences in soil temperature and moisture during the rest of the year. Understanding the spatial and temporal variation even within small geographic areas is essential to assess C budgets at ecosystem level accurately. Thus, this study bears important implications for the study of large-scale ecosystem dynamics, particularly in response to climatic change. |
format | Online Article Text |
id | pubmed-5901050 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2007 |
publisher | TheScientificWorldJOURNAL |
record_format | MEDLINE/PubMed |
spelling | pubmed-59010502018-06-03 Soil CO(2) Efflux in a Mixed Pine-Oak Forest in Valsaín (Central Spain) Inclán, Rosa De la Torre, Daniel Benito, Marta Rubio, Agustín ScientificWorldJournal Short Communication Soil-surface CO(2) efflux and its spatial and temporal variation were investigated in a southern Mediterranean, mixed pine-oak forest ecosystem on the northern slopes of the Sierra de Guadarrama in Spain from February 2006 to July 2006. Measurements of soil CO(2) efflux, soil temperatures, and moisture were conducted in nine 1963-m(2) sampling plots distributed in a gradient around the ecotone between Pinus sylvestris L. and Quercus pyrenaica Lam. forest stands. Total soil organic matter, Walkey-Black C, particulate organic matter, organic matter fraction below 53 μm, total soil nitrogen content, total soil organic carbon content, and pH were also measured under three representative mature oak, pine, and mixed pine-oak forest stands. Soil respiration showed a typical seasonal pattern with minimums in winter and summer, and maximums in spring, more pronounced in oak and oak-pine stands. Soil respiration values were highest in pine stands during winter and in oak stands during spring and summer. Soil respiration was highly correlated with soil temperatures in oak and pine-oak stands when soil moisture was above a drought threshold of 15%. Below this threshold value, soil moisture was a good predictor of soil respiration in pine stands. Greater soil organic matter, particulate organic matter, Walkey-Black C, total organic C, and total N content in pine compared to oak sites potentially contributed to the greater total soil CO(2) efflux in these stands during the winter. Furthermore, opposing trends in the organic matter fraction below 53 μm and soil respiration between plots suggest that in oak stands, the C forms are less affected by possible changes in use. The effects of soil properties on soil respiration were masked by differences in soil temperature and moisture during the rest of the year. Understanding the spatial and temporal variation even within small geographic areas is essential to assess C budgets at ecosystem level accurately. Thus, this study bears important implications for the study of large-scale ecosystem dynamics, particularly in response to climatic change. TheScientificWorldJOURNAL 2007-03-21 /pmc/articles/PMC5901050/ /pubmed/17450294 http://dx.doi.org/10.1100/tsw.2007.7 Text en Copyright © 2007 Rosa Inclán et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Short Communication Inclán, Rosa De la Torre, Daniel Benito, Marta Rubio, Agustín Soil CO(2) Efflux in a Mixed Pine-Oak Forest in Valsaín (Central Spain) |
title | Soil CO(2) Efflux in a Mixed Pine-Oak Forest in Valsaín (Central Spain) |
title_full | Soil CO(2) Efflux in a Mixed Pine-Oak Forest in Valsaín (Central Spain) |
title_fullStr | Soil CO(2) Efflux in a Mixed Pine-Oak Forest in Valsaín (Central Spain) |
title_full_unstemmed | Soil CO(2) Efflux in a Mixed Pine-Oak Forest in Valsaín (Central Spain) |
title_short | Soil CO(2) Efflux in a Mixed Pine-Oak Forest in Valsaín (Central Spain) |
title_sort | soil co(2) efflux in a mixed pine-oak forest in valsaín (central spain) |
topic | Short Communication |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5901050/ https://www.ncbi.nlm.nih.gov/pubmed/17450294 http://dx.doi.org/10.1100/tsw.2007.7 |
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