Infodoc : Sciences, Techniques et Culture

A network for the long term observation of forest ecosystems has been established in the Observatoire pérenne de l’environnement (Permanent Environmental Observatory) created by the National Agency for Radioactive Wastes. The network is located at the boundary between the Meuse and Haute-Marne départements and comprises some hundred permanent inventory points. The forests in the network consist in 75% of high forests at various stages of development, half of which are adult stands. Five major soil types were identified in the observation network and the forest sites accommodate a rich variety of species, although the variability of the environment is limited on the scale of the network as a whole. Land utilisation has changed since the beginning of the 19th century, with the contracti[...]

A network for the long term observation of forest ecosystems has been established in the Observatoire pérenne de l’environnement (Permanent Environmental Observatory) created by the National Agency for Radioactive Wastes. The network is located at the boundary between the Meuse and Haute-Marne départements and comprises some hundred permanent inventory points. The forests in the network consist in 75% of high forests at various stages of development, half of which are adult stands. Five major soil types were identified in the observation network and the forest sites accommodate a rich variety of species, although the variability of the environment is limited on the scale of the network as a whole. Land utilisation has changed since the beginning of the 19th century, with the contraction of cultivated areas that tend to be taken over by forests.
Un réseau d’observation de l’évolution à long terme des écosystèmes forestiers a été mis en place dans l’Observatoire pérenne de l’environnement institué par l’Agence nationale des déchets radioactifs. Situé à la limite des départements de la Meuse et de la Haute-Marne, le réseau est constitué d’une centaine de points d’inventaires permanents. Les massifs forestiers du réseau sont composés à 75 % de futaies à différents stades de développement, la moitié d’entre elles étant des peuplements adultes. Cinq grands types de sols ont été individualisés sur le réseau d’observation et les stations forestières sont très riches en espèces, même si la variabilité des milieux reste limitée à l’échelle de l’ensemble du réseau. L’utilisation des sols a évolué depuis le début du XIXe siècle. On note principalement le recul des zones cultivées au profit des surfaces boisées.