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Chapitre d'ouvrage
Eddy covariance measurements over forests
Abstract : In the 1970s, scientists met with difficulties in estimating fluxes over tall vegetation, like forests, using flux-gradient relationship (Raupach 1979). The roughness of the exchanging surface drive to efficient turbulent mixing reducing the concentration gradient and invalidating Monin-Obukhov similarity theory (Lenschow 1995). In the 1990s, the eddy covariance (EC) method was developed and turned out to be very promising for CO2, latent, and sensible heat exchange quantification over these tall ecosystems. When the first networks of EC measurements were implemented (EuroFlux, Valentini et al. 2000; Ameriflux, Running et al. 1999), they included then a majority of forest sites. The other reasons for this historical forest leading position were their large terrestrial cover (FAO 2005 report) and their potentiality to store carbon over long periods (Valentini 2003).
https://hal.archives-ouvertes.fr/hal-01267913
Contributeur : Archive Ouverte Prodinra <>
Soumis le : jeudi 4 février 2016 - 20:42:31
Dernière modification le : samedi 6 juin 2020 - 06:32:52
Contributeur : Archive Ouverte Prodinra <>
Soumis le : jeudi 4 février 2016 - 20:42:31
Dernière modification le : samedi 6 juin 2020 - 06:32:52
