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Résultats de la recherche (12 résultats)

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Par Collection Par Auteur Par Date Par Sujet Par Titre
  • Pedogenic carbonate cutans as a record of the Holocene history of relic tundra-steppes of the Upper Kolyma Valley (North-Eastern Asia)
  • Asian part of Russia ; C 14 dating ; Carbonate ; Cold area ; Ecosystem ; Holocene ; Microstructure ; Palaeo-environment ; Soil ; Soil properties ; Steppe ; Tundra
  • insufficient to provide the desired reliability for paleo-landscape reconstructions. Nevertheless, the combination of absolute dating, cutan morphology and composition has shed light on the Holocene evolution of tundra-steppes in North-Eastern Asia.
  • 1998
  • Arid area ; Atmospheric circulation ; Bibliography ; Climatology ; Energy balance ; Forest ; Mesoclimate ; Microclimate ; Periglacial features ; Semi-arid area ; Tundra ; Urban climate
  • , and mostly high-latitude ice, snow, permafrost and tundra landscapes).
  • 1998
  • Satellite-derived vegetation index and cover type maps for estimating carbon dioxide flux for arctic tundra regions
  • Alaska ; Carbon dioxide ; Data processing ; LANDSAT ; MSS ; Polar region ; Remote sensing ; SPOT ; Tundra ; Vegetation ; Vegetation index ; Watershed
  • 1998
  • macrofossils of more than 20 species, dominated by those of open mineral soils that in North America occur largely in the tundra and open tundra-forest ecotone of northern Canada. Ice-wedge casts occur in the sand.
  • 1998
  • Biogeography ; Conifer ; Ecotone ; Forest ; Geographical information system ; Habitat ; Model ; Montana ; Mountain ; National park ; Periglacial features ; Remote sensing ; Tundra ; United States of America
  • Alpine periglacial environments within the forest-alpine tundra ecotone (FATE) may be among the first to reflect changes in habitat characteristics as a consequence of climatic change. This paper describes several promising data collection
  • 1998
  • Altitude ; Altitudinal zonation ; Cryoturbation ; Freezing ; Mongolia ; Mountain ; Periglacial features ; Permafrost ; Slide rocks ; Slope deposit ; Solifluction ; Steppe ; Taiga ; Tundra
  • 1998
  • Aquifer ; Canada ; Cold area ; Drainage ; Micromorphology ; Northwest Territories ; Patterned ground ; Periglacial features ; Permafrost ; Tundra
  • 1998
  • . Climate has changed from humid subtropical (Oligocene) into frigid (subarctic) with tundra development (Late Pleistocene). All these conditions have formed recent surface pattern. Many processes are now very slow, but they changed many times in Late
  • 1998
  • Arkhangelsk ; Cold area ; European part of Russia ; History of geography ; Komi ; Subarctic area ; Tundra ; Twentieth Century
  • 1998
  • Arctic Region ; Cold area ; Environment ; Fluvioglacial features ; Geographical information system ; Modelling ; Sandur ; Spitsbergen ; Svalbard ; Tundra ; Vegetation
  • 1998
  • Altitudinal zonation of vegetation ; Arid area ; Boundary ; Climate ; Cold area ; Forest ; Handbook ; Mangrove ; Natural landscape ; Phytogeography ; Population dynamics ; Relief ; Savanna ; Soil ; Soil properties ; Teaching of geography ; Tundra
  • 1998
  • Asian part of Russia ; Eastern Siberia ; Freeze-thaw cycle ; Geomorphogenesis ; Krasnoyarsk ; Landform evolution ; Microrelief ; Periglacial features ; Tundra
  • 1998