MooreHoule2009

Référence

Moore, J.-D. and Houle, D. (2009) Soil solution and sugar maple response to NH4NO3 additions in a base-poor northern hardwood forest of Québec, Canada. Environmental Monitoring and Assessment, 155(1-4):177-190. (Scopus )

Résumé

Nitrogen additions (NH4NO3) at rates of three- and ten-fold ambient atmospheric deposition (8.5 kg ha-1 year-1) were realised in an acid- and base-poor northern hardwood forest of Québec, Canada. Soil solution chemistry, foliar chemistry, crown dieback and basal area growth of sugar maple (Acer saccharum Marsh.) were measured. Except for a transitory increase of NO3 and NH4 concentrations, there was no persistent increase in their level in soil solution 3 years after N treatments, with the exception of one plot out of three, that received the highest N addition, beginning to show persistent and high NO3 concentrations after 2 years of N additions. Three years of N additions have significantly increased the N DRIS index of sugar maple but not N foliar concentration. Potassium, Ca and Mn foliar concentrations, as well as P and Ca DRIS indices, decreased in treated plots after 3 years. No treatment effect was observed for basal area growth and dieback rate. One unexpected result was the significant decrease in foliar Ca even in the treated plots that received low N rates, despite the absence of significant NO3-induced leaching of Ca. The mechanism responsible for the decrease in foliar Ca is not known. Our results, however, clearly demonstrate that increased N deposition at sites with low base saturation may affect Ca nutrition even when clear signs of N saturation are not observed. © Springer Science+Business Media B.V. 2008.

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@ARTICLE { MooreHoule2009,
    AUTHOR = { Moore, J.-D. and Houle, D. },
    TITLE = { Soil solution and sugar maple response to NH4NO3 additions in a base-poor northern hardwood forest of Québec, Canada },
    JOURNAL = { Environmental Monitoring and Assessment },
    YEAR = { 2009 },
    VOLUME = { 155 },
    PAGES = { 177-190 },
    NUMBER = { 1-4 },
    NOTE = { cited By 10 },
    ABSTRACT = { Nitrogen additions (NH4NO3) at rates of three- and ten-fold ambient atmospheric deposition (8.5 kg ha-1 year-1) were realised in an acid- and base-poor northern hardwood forest of Québec, Canada. Soil solution chemistry, foliar chemistry, crown dieback and basal area growth of sugar maple (Acer saccharum Marsh.) were measured. Except for a transitory increase of NO3 and NH4 concentrations, there was no persistent increase in their level in soil solution 3 years after N treatments, with the exception of one plot out of three, that received the highest N addition, beginning to show persistent and high NO3 concentrations after 2 years of N additions. Three years of N additions have significantly increased the N DRIS index of sugar maple but not N foliar concentration. Potassium, Ca and Mn foliar concentrations, as well as P and Ca DRIS indices, decreased in treated plots after 3 years. No treatment effect was observed for basal area growth and dieback rate. One unexpected result was the significant decrease in foliar Ca even in the treated plots that received low N rates, despite the absence of significant NO3-induced leaching of Ca. The mechanism responsible for the decrease in foliar Ca is not known. Our results, however, clearly demonstrate that increased N deposition at sites with low base saturation may affect Ca nutrition even when clear signs of N saturation are not observed. © Springer Science+Business Media B.V. 2008. },
    AUTHOR_KEYWORDS = { Dieback; Nitrogen fertilization; Nitrogen saturation; Soil solution; Sugar maple },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1007/s10661-008-0427-y },
    KEYWORDS = { Dieback; Nitrogen fertilization; Nitrogen saturation; Soil solution; Sugar maple, Calcium; Concentration (process); Forestry; Hardwoods; Leaching; Manganese; Manganese compounds; Meteorological problems; Nitrogen; Potassium; Soil moisture; Sugar (sucrose), Sugars, ammonium nitrate; calcium; manganese; nitrate; nitrogen; potassium, atmospheric deposition; basal area; deciduous tree; dieback; forest dynamics; nitrogen; saturation, Acer; addition reaction; article; atmospheric deposition; Canada; controlled study; dieback disease; forest management; forest soil; leaching; plant growth; plant nutrition; sugar maple, Acer; Calcium; Environmental Monitoring; Nitrates; Quebec; Soil; Soil Pollutants; Trees, Acer Saccharum; Calcium; Concentration; Fertilization; Forestry; Hardwoods; Leaching; Manganese; Manganese Compounds; Nitrogen; Potassium; Saturation; Soil; Solutions; Sugars, Canada; North America; Quebec [Canada], Acer saccharum },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-68149161002&partnerID=40&md5=20019f2a1181c65d7435b8f6e55b98b6 },
}

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