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(Article of periodic en Anglais - 2013)

Document title

Mass-balance modeling of mineral weathering rates and CO2 consumption in the forested, metabasaltic Hauver Branch watershed, Catoctin Mountain, Maryland, USA

Authors(s) and Affiliation(s)

PRICE J.R. (1) ; RICE K.C. (2) ; SZYMANSKI D.W. (3) ;
(1) Dept. of Earth Sciences, Univ., Millersville, ETATS-UNIS
(2) Dept. of Environmental Sciences, US Geological Survey, Charlottesville, ETATS-UNIS
(3) Dept. of Natural and Applied Sciences, Bentley Univ., Waltham, ETATS-UNIS

Abstract

Mineral weathering rates and a forest macronutrient uptake stoichiometry were determined for the forested, metabasaltic Hauver Branch watershed in north-central Maryland, USA. The stoichiometry of a deciduous biomass term was determined using multi-year weekly to biweekly stream-water chemistry for a nearby watershed, which drains relatively unreactive quartzite bedrock. Based on carbon-balance calculations, atmospheric-derived sulfuric acid is responsible for approximately 22% of the mineral weathering occurring in the watershed. It is highlighted that rising air temperatures, driven by global warming and resulting in higher precipitation, will cause the rate of chemical weathering in the Hauver Branch watershed to increase until a threshold temperature is reached. Beyond the threshold temperature, increased recharge would produce a shallower groundwater table and reduced chemical weathering rates

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2013, vol. 38, no8 [pp. 859-875]

Bibliographic references : 3 p.

Collation : 8 fig., 14 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3373

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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