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Portail d'information géographique

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Par Collection Par Auteur Par Date Par Sujet Par Titre
  • The evolution of land use in Giant Forest, Sequoia National Park
  • 1987
  • Forest fire and the natural sol erosion regima in the Colorado Front Range
  • Des mesures de l'érosion des sols sur cinq bassins versants forestés font apparaître un taux d'érosion trois fois supérieur au taux normal, à la suite de feux de forêt. Ceux-ci seraient dans une large mesure responsables du départ de sédiment à long
  • 1987
  • Determining the rate of forest conversion in Mato Grosso, Brazil using Landsat MSS and AVHRR data
  • 1987
  • A survey of humid tropical forests in Jamaica, carried out by the A. in 1986, indicates a 3.3 % per annum rate of deforestation for 1980-86. But, despite significant commercial lumber production, large clear fellings are rare and most modification
  • of the forest is due to expansion of small-scale farming and pastoral activity. As uncontrolled deforestation is adversely affecting watersheds and inducing serious flooding, some form of control and management is urgently required. - (DB)
  • 1987
  • Structural and functional features of mesophytic forests in the East-Central United States
  • 1987
  • Paleoenvironmental changes at the northern limit of the Subantarctic Nothofagus forest, Lat 37 oS, Argentina in XII INQUA Congress Issue.
  • 1987
  • Between 1933 and 1975 more than 147,000 ha of forest were destroyed by fire in northwestern Oregon. The A. documents the economic and cadastral effects of this catastrophe. Now regenerated, the area is becoming a recreational site for metropolitan
  • 1987
  • The 150 km from Campeche to Sisal includes petenes, small tropical forests with special hydrological and weather characteristics and a human use that included chicle gathering and logging. - (DWG)
  • 1987
  • A reexamination of late Pleistocene boreal forest reconstructions for the southern High Plains
  • 1987