An assessment of the possible impact of expansion of native woodland cover on the chemistry of Scottish freshwaters

Alexander, Clare; Cresser, Malcolm S.

doi:10.1016/0378-1127(94)03476-d

Cited by 21 publications

(10 citation statements)

References 85 publications

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“…A acidificação do solo em áreas florestais pode ser relacionada com a lixiviação de bases ou pela absorção desses elementos pelas árvores, o que seria mais evidente em solos intemperizados, pobres em nutrientes e com baixo tamponamento. Parte da acidez do solo pode estar relacionada à liberação de ácidos orgânicos durante a decomposição da serapilheira, sendo normalmente observado maior pH em água na biomassa de plantas decíduas que coníferas (ALEXANDER e CRESSE, 1995 , sem alteração em profundidade, com maiores teores no solo sob pinus com 20 anos de idade (P20) e no campo nativo, na camada de 0,0 a 0,05 cm. Na média das profundidades, os maiores teores de fósforo foram constatados no P20 (Tabela 4).…”

Section: Resultsunclassified

Carbono orgânico e atributos químicos do solo em áreas florestais

et al. 2008

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RESUMO -O objetivo deste estudo foi avaliar teores de carbono orgânico e atributos químicos do solo em áreas localizadas em Campo Belo do Sul, SC, nos seguintes usos da terra: campo nativo (CN); floresta de pinus (Pinus taeda) com 12 anos (P12); floresta de pinus com 20 anos (P20); reflorestamento de araucária (Araucaria angustifolia) com 18 anos (A18); e mata nativa de araucária (MN). O solo foi amostrado de forma sistemática, com oito repetições, coletando-se as camadas de 0,0-0,05; 0,05-0,1; 0,1-0,2; e 0,2-0,4 m. Os reflorestamentos com pinus e araucária mantiveram os estoques de C orgânico na camada do solo de 0,0-0,4 m em níveis equivalentes aos de mata e campo, totalizando de 12,5 a 14,2 kg m -2 . A acidez do solo e os teores de P disponível foram maiores, na média das camadas analisadas, no tratamento P20. Entre os nutrientes, verificaram-se teores baixos a médios de P disponível e de K, Ca e Mg trocável.Palavras-chave: Acidez do solo, nutrientes e reflorestamento. ORGANIC CARBON AND SOIL CHEMICAL ATTRIBUTES IN FOREST AREAS ABSTRACT -The objective of this work was to evaluate organic carbon contents and soil chemical attributes in forest areas in Campo Belo do Sul, Santa Catarina, Brazil, with the following land use: native grassland (NG); 12-year-old loblolly pine (Pinus taeda) reforestation (P12); 20-year-old loblolly pine reforestation (P20); 18-year-old araucaria (Araucaria angustifolia) reforestation (A18); and native forest with araucaria (NF).

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Section: Resultsunclassified

Carbono orgânico e atributos químicos do solo em áreas florestais

et al. 2008

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“…Replacement of Calluna-dominated moorland with forest vegetation could have potential implications for the quality and quantity of upland water resources . For example, a number of workers have suggested that enhanced acid deposition on forest canopies, increased base cation uptake and production of acidic litter may have an acidifying eect on soils and stream water (Alexander and Cresser, 1994;Soulsby et al, 1997b). The development of deeper rooting trees may, however, increase groundwater contributions to stream¯ow if more water penetrates through macropores in horizons that currently impede drainage (Soulsby and Reynolds, 1992).…”

Section: Discussionmentioning

confidence: 98%

Hydrogeochemistry of shallow groundwater in an upland Scottish catchment

Soulsby

Chen

Ferrier³

et al. 1998

Hydrol. Process.

137

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Abstract:The hydrogeochemistry of shallow groundwater has been characterized in the Allt a' Mharcaidh catchment in the Scottish Cairngorms in order to: (i) assess the spatial and temporal variation in groundwater chemistry; (ii) identify the hydrogeochemical processes regulating its evolution; and (iii) examine the in¯uence of groundwater on the quality and quantity of stream¯ow. Shallow groundwater in super®cial drift deposits is circumneutral (pH $ 7 . 1) and base cation concentrations are enriched compared with precipitation and drainage water from overlying podzolic soils. Modelling with NETPATH suggests that the dominant geochemical processes that account for this are the dissolution of plagioclase, K-feldspar and biotite. Groundwater emerging as springs from weathered granite underlying high altitude (4900 m) alpine soils shows similar characteristics, though weathering rates are lower, probably as a result of reduced residence times and lower temperatures. Chemical hydrograph separation techniques using acid neutralizing capacity (ANC) and Si as tracers show that groundwater is the dominant source of base¯ow in the catchment and also buers the chemistry of stream water at high¯ows: groundwater may account for as much as 50±60% of annual runo in the catchment. Climate and land use in the Cairngorms are vulnerable to future changes, which may have major implications for hydrogeological processes in the area. #

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“…Soil samples taken close to the experimental area and representing the same soil formation and supporting native vegetation showed similar pH values (Table 1). However, it is well known that pine plantations may acidify the soil (ALEXANDER; CRESSER, 1995;BRANDÃO;LIMA, 2002;INGERSLEV, 1997;LILIENTFEIN et al, 2000;SOUZA;SOUZA, 1981;PADUA et al, 2006).…”

Section: Resultsmentioning

confidence: 99%

<b>Liming and fertilisation in <i>Pinus taeda</i> plantations with severe nutrient deficiency in savanna soils

et al. 2014

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ABSTRACT. Soils with high acidity and low exchangeable bases may be responsible for low yields of Pinus taeda in a forest plantation at Jaguariaíva, Paraná State, Brazil. The aim of this study was to evaluate the effect of liming and fertilisation, applied over litter, on two selected areas with Pinus taeda plantations. Soil, litter and pine needles were evaluated for K, Ca and Mg concentrations and soil acidity parameters. Seven treatments were applied: (i) complete (N, P, K, Zn, Cu, B, Mo, and lime); (ii) without N, P, and K;

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An assessment of the possible impact of expansion of native woodland cover on the chemistry of Scottish freshwaters

Cited by 21 publications

References 85 publications

Carbono orgânico e atributos químicos do solo em áreas florestais

Carbono orgânico e atributos químicos do solo em áreas florestais

Hydrogeochemistry of shallow groundwater in an upland Scottish catchment

<b>Liming and fertilisation in <i>Pinus taeda</i> plantations with severe nutrient deficiency in savanna soils

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