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Portail d'information géographique

Résultats de la recherche (11 résultats)

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Par Collection Par Auteur Par Date Par Sujet Par Titre
  • Geography matters in a globalized world
  • 1999
  • Global patterns and family matters : life history and the Ukrainian pioneer diaspora
  • 1999
  • Patent places : size matters
  • 1999
  • evidence of human habitation (i.e., the midden model). Ash and organic matter were deposited to form these patches. Fertility of the soils has persisted long after cultural manipulation has ceased. - (SLD)
  • 1999
  • stand on drift sand were grazed for 7 years at high and moderate intensities. The humus profiles of these 2 sites and of a control site were sampled at various scales to assess changes in grass biomass, thickness of ectorganic horizons, organic matter
  • 1999
  • The AA. consider the magnitude and duration of enhanced nutrient losses in particulate matter from newly burnt Eucalyptus globulus and Pinus pinaster forests in the Águeda River Basin, wet mediterranean climate of north-central Portugal
  • 1999
  • Canada ; Environment ; Garden ; Green space ; Landscape ; Legislation ; Mat-vegetation ; Niagara ; North America ; Private space ; United States of America ; Urban environment ; Urban landscape
  • 1999
  • of calciumcarbonate and organic matter, and has a leptokurtic to extremely leptokurtic grain-size distribution.
  • 1999
  • This paper presents that the mean age of phytoliths and soil organic matter (SOM) in the uppermost 2.6 m of a latosol in central southern Brazil increases with depth in a regular, quantifiable fashion. The mean age of particles at each level results
  • 1999
  • The AA. report a rate of production for 14CO in calcite. They use cryogenic methods to separate in situ cosmogenic 14CO from in situ cosmogenic 14CO2, or from biological 14C present as organic matter or as CaCO3. With the rate of production
  • 1999
  • Mitigation wetlands constructed in southeastern Virginia during the past decade have experienced problems with inappropriate water levels, excessive erosion and sedimentation, low levels of soil organic matter, overly compacted substrates
  • 1999