Titre :
|
The determination of total nitrogen and total phosphorus concentrations in freshwaters from land use, stock headage and population data: Testing of a model for use in conservation and water quality management
|
Auteurs :
|
P. Johnes ;
B. Moss ;
G. Phillips
|
Type de document :
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article/chapitre/communication
|
Année de publication :
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1996
|
Format :
|
p. 451-473
|
Langues:
|
= Anglais
|
Catégories :
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EAU
|
Mots-clés:
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ROYAUME UNI
;
COURS D'EAU
;
QUALITE DE L'EAU
;
AZOTE TOTAL
;
PHOSPHORE
;
UTILISATION DU SOL
;
ACTIVITE HUMAINE
;
PREVISION
;
MODELE
|
Résumé :
|
This paper describes and tests an export coefficient model for prediction of total N and total P from: (i) land use, stock headage and human population; (ii) the export rates of N and P from these sources; and (iii) the river discharge. Such a model might be used to forecast the effects of changes in land use in the future and to hindcast past water quality to establish comparative or baseline states for the monitoring of change. Its describes how the model may be calibrated against observed data and then independently validated by testing against further observed data. This processes has been carried out for ten British rivers.
|
Source :
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Freshwater biology, vol.36
|