Mots-clés
Action anthropique Analyse de régression Azote foliaire Biodiversité Ecosystème Essence forestière Etats-Unis Forêt Gestion des ressources Gradient environnemental New York State Système d'information géographique Télédétection Variation spatiale Zone tempérée Biodiversity Ecosystem Forest Geographical information system Human impact New York State Regression analysis Remote sensing Resource management Spatial variation Temperate zone Tree species United States of America Acción antrópica Análisis de regresión Biodiversidad Bosque Ecosistema Especie forestal Estado de Nueva York Estados Unidos Gestión de los recursos Sistema de información geográfica Teledetección Variación espacial Zona templadaFoliar nitrogen responses to the environmental gradient matrix of the Adirondack Park, New York
Auteur(s) et Affiliation(s)
MCNEIL, B.E.
Dep. of Geology and Geography, West Virginia Univ., Morgantown, Etats-Unis
READ, J.M.
Dep. of Geography, Univ., Syracuse, Etats-Unis
DRISCOLL, C.T.
Dep. of Civil and Environmental Engineering, Univ., Syracuse, Etats-Unis
Description :
The AA. relate a regional survey of foliar N data from a diverse set of forest tree species in the Adirondack Park, New York, to a holistic matrix of environmental gradients thought to control spatial variability of foliar N. Stepwise multiple regression models developed for each species indicate that neighboring species and abiotic gradients of resource availability play a lesser role, and anthropogenic influences are the strongest drivers of spatial variability in foliar N. Moreover, they find that the plasticity of the total foliar N response to measured environmental variability is strongly related to 2 indexes of a species' resource strategy : leaf mass per area and shade tolerance. These results emphasize the potentially dominant role of humans in controlling future nutrient cycling, and suggest that spatially explicit measurements of foliar N, environmental gradients, and plant resource strategies might provide a pathway to map and forecast ecosystem services at regional scales.
Type de document :
Article de périodique
Source :
Annals of the Association of American Geographers, issn : 0004-5608, 2012, vol. 102, n°. 1, p. 1-16, nombre de pages : 16, Références bibliographiques : 3 p.
Date :
2012
Editeur :
Pays édition : Etats-Unis, Washington, DC, Association of American Geographers
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)