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  • Alaska ; Arctic Region ; Biogeochemical cycle ; Canada ; Cold area ; Geochemistry ; Latitude ; Nitrogen ; Patterned ground ; Spatial analysis ; Tundra
  • Alaska ; Análisis espacial ; Canada ; Ciclo biogeoquímico ; Geoquímica ; Latitud ; Nitrógeno ; Suelo figurado ; Tundra ; Zona fría ; Ártica
  • Small patterned-ground features (PGFs) in the Arctic have unique soil properties that vary with latitude and may greatly affect tundra biogeochemistry. Because nitrogen availability can strongly limit arctic vegetation growth, the AA. examined how
  • soil nitrogen transformations differ between PGFs and the surrounding inter-PGF tundra along an arctic latitudinal gradient. The 8 study sites are located from the Alaskan Low Arctic to the Canadian High Arctic. The soils were incubated for 21 days at 9
  • 2012
  • Prostranstvennaâ struktura èkotona tundra-taïga na plato Putorana (po kosmičeskim snimkam sverhvysokogo razrešeniâ)
  • Asian part of Russia ; Eastern Siberia ; Ecotone ; Forest ; Putorana Plateau ; Remote sensing ; Spatial structure ; Spectral analysis ; Taiga ; Tundra ; Vegetation ; Vegetation map
  • Análisis espectral ; Bosque ; Ecotono ; Estructura espacial ; Mapa de la vegetación ; Rusia de Asia ; Siberia oriental ; Taiga ; Teledetección ; Tundra ; Vegetación
  • 2012
  • Asian part of Russia ; Graphics ; Landscape analysis ; Model ; Natural environment ; Russian Far East ; Tundra ; Typology
  • Análisis del paisaje ; Extremo Oriente ruso ; Medio natural ; Modelo ; Representación gráfica ; Rusia de Asia ; Tipología ; Tundra
  • 2012
  • Arctic Region ; Asian part of Russia ; Climatic change ; Human impact ; Nature conservation ; Northern Russia ; Permafrost ; Phytomass ; Tundra ; Vegetation ; Vegetation degradation ; West Siberia
  • Acción antrópica ; Cambio climático ; Degradación de la vegetación ; Fitomasa ; Pergelisol ; Protección de la naturaleza ; Rusia de Asia ; Siberia occidental ; Tundra ; Vegetación ; Ártica
  • 2012
  • and at undisturbed sites. In general, the slope, sedimentology and biogeochemistry of stabilised and undisturbed zones differ, independent of their age or location. Organic carbon contents were lower in slumps than in the surrounding tundra, and the density
  • 2012
  • , expressed as freezing and thawing n-factors, vary significantly with vegetation type and hence elevational band, with the lowest values for the forested zone and the highest for non-maritime alpine tundra. Equilibrium modelling carried out for one site
  • 2012