Résumé :
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Evaporation in the Uplands both adresses and attempts to resolve the controversy concerning the effects of afforestation on evaporation and water resources.It deals with the historical background to the problem,in relation to earlier studies and the theoretical basis of evaporation models,and carries on to describe the comprehensive research programme which was initiated to resolve the arguments.Experimental techniques and new theoretical developments-including a new stochastic approach to interception modelling-are described in sufficient detail for methods to be followed and extended by other researchers.Although the study area was limited to the uplands of the United Kingdom,both the research programme and the results and models produced are relevant to other forested areas of the world since they also have bearing on wider issues such as the global energy balance and the greenhouse effect.For practitioners in the water industry,a pratical example is given of the use of models to assess the effects of afforestation on catchment runnoff.
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