ECOLEAP is a Canadian Forest Service research project that ECOLEAP est un projet de recherche du Service canadien des is aimed at improving our understanding of the environmental confor& visant & amkliorer notre comprkhension des contr6les trols on boreal and sub-boreal forest productivity and at develenvironnementaux de la productivitk de la forst borkale et suboping tools for predicting stand-level forest productivity over large bodale, et B dkvelopper des outils pour p k d k la productivitk des areas. This interdisciplinary project combines, in a coordinated peuplements sur de grands temtoires. Ce projet interdisciplinaire manner, ecophysiological and soils research, remote sensing combine de fawn coordonn6e des recherches en Wologie, en 6co-research, development of scaling up procedures and process physiologie, en tkl&Etection, en spatialisation et en modklisation modelling of net primary productivity on a common set of field des processus rkgissant la productivitk primaire nette sur un sites. The process research is carried out in different forest types ensemble commun de sites de terrain. La recherche sur les proacross large climatic and productivity gradients. Remote sensing cessus est rCalis6e dans diffkrents types forestiers rkpartis le provides timely stand information such as composition, leaf long de gradients climatiques et de productivitk importants. La area, and absorbed radiation that are not currently available in existtkltdktection fournit des donnkes & jour sur les peuplements ing spatial databases. A geographic information system is used c o m e leur composition, leur surface foliaire, et leur absorption to integrate the diverse sources of data. Models serve both as intedu rayonnement solaire, donnks qui ne sont pas disponibles dans grators of knowledge and as vehicles for the transfer of the d'autres bases spatiales de donnkes. Un systkme d'information information and methodologies to resource managers. Current-& reference spatiale est utilist pour intkgrer les donnkes des difly there are three interrelated modelling exercises being carried fkrentes sources. Les modtles sont utilisks & la fois c o m e intCout within ECOLEAP to address different objectives of the prograteurs des connaissances et comme vkhicules de transfert des ject: an empirical, spatially explicit model of site index, a site-speinformations et mkthodologies vers les gestionnaires de la cific process model of productivity, and a spatially explicit proressource. Il y a pr6sentement trois exercices de modklisation intercess model of productivity. Application of the spatially explicit reliks dans ECOLEAP qui s'adressent & des objectifs diffkrents models will be conducted on extensive pilot regions, the first of du projet : le modele empirique spatialiske d'indice de qualitk de which is located north of Quebec City. station, le modele des processus de productivitt B l'kchelle du site, et le modele spatialisk des processus de productivit6. L'applicaKey words: modelling, GIs, remote sensing, Canadian Forest Service tion des modele...
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