Impacts of enhanced nitrogen deposition and soil acidification on biomass production and nitrogen leaching in Chinese fir plantations

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dc.contributor.authorBlanco Vaca, Juan Antonio
dc.contributor.authorWei, Xiaohua
dc.contributor.authorJiang, Hong
dc.contributor.authorJie, Cheng-Yue
dc.contributor.authorXin, Zan-Hong
dc.contributor.departmentCiencias del Medio Naturales_ES
dc.contributor.departmentNatura Ingurunearen Zientziakeu
dc.date.accessioned2015-12-30T11:00:05Z
dc.date.available2015-12-30T11:00:05Z
dc.date.issued2012
dc.descriptionIncluye material complementarioes_ES
dc.description.abstractAtmospheric pollution levels in China are increasing quickly. Experience from other polluted regions shows that tree growth could be affected, but long-term effects of N deposition and soil acidification on Chinese forests remain mostly unknown. Soil acidification and N deposition were simulated for Chinese fir plantations in Southeast China. A factorial experiment combined four levels of rain pHs (2.5, 4.0, 5.6 and 7.0), four N deposition rates (1, 7.5, 15 and 30 kg N ha-1 y-1) and two site qualities (poor and rich sites), managed for 3 consecutive 20-year rotations. Results indicate atmospheric pollution effects are not immediate, but after 1 to 2 rotations soil acidification effects could reduce ecosystem C pools significantly (-25% and -11% in poor and rich sites, respectively). N deposition rates above 15 kg N ha-1 y-1 could offset some of the negative effects of soil acidification and led to more ecosystem C (19 and 28 Mg C ha-1 more in poor and rich sites than in low N deposition). However, at high N deposition rates (>15 kg N ha-1 y-1), N leaching losses could greatly increase, reaching 75 kg N ha-1 y-1. Moderate N deposition could increase tree biomass production and soil organic mass, resulting in increased ecosystem C, but these gains could be associated to important N leaching. Atmospheric pollution could also result in the long-term in nutrient imbalances and additional ecological issues (i.e. biodiversity loss, eutrophication, etc.) not studied here.en
dc.format.mimetypeapplication/pdfen
dc.format.mimetypeapplication/zipen
dc.identifier.doi10.1139/x2012-004
dc.identifier.issn0045-5067 (Print)
dc.identifier.issn1208-6037 (Electronic)
dc.identifier.urihttps://academica-e.unavarra.es/handle/2454/19823
dc.language.isoengen
dc.publisherNRC Research Pressen
dc.relation.ispartofCanadian Journal of Forest Research, 2012, 42(3): 437-450en
dc.relation.publisherversionhttps://dx.doi.org/10.1139/x2012-004
dc.rights© Los autoreses_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.subjectN depositionen
dc.subjectCunninghamia lanceolataen
dc.subjectFORECAST modelen
dc.subjectSustainable forest managementen
dc.subjectAtmospheric pollutionen
dc.subjectC sequestrationen
dc.titleImpacts of enhanced nitrogen deposition and soil acidification on biomass production and nitrogen leaching in Chinese fir plantationsen
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
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relation.isAuthorOfPublicatione903cbb7-371a-4cbe-966e-41bbd3332049
relation.isAuthorOfPublication.latestForDiscoverye903cbb7-371a-4cbe-966e-41bbd3332049

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