Soil moisture and temperature variation under different types of tundra vegetation during the growing season : A case study from the Fuglebekken catchment, SW Spitsbergen
Active layer ; Arctic Region ; Climatic change ; Cold area ; Cryosol ; Permafrost ; Soil moisture ; Soil properties ; Soil temperature ; Spitsbergen ; Svalbard ; Tundra ; Watershed
Cambio climático ; Cuenca hidrográfica ; Humedad del suelo ; Molisol ; Pergelisol ; Propiedades del suelo ; Spitzberg ; Temperatura del suelo ; Tundra ; Zona fría ; Ártica
carried out between June 24 and September 9 of 2008. The studied sites represented : 1) Turbic Cryosol, poorly covered by vegetation and exhibiting evidences of strong cryogenic processes; 2) Hyperskeletic Cryosol covered by a community of wet moss tundra
vegetation with variable moisture which evolves under the influence of water flowing from the adjacent mountain slopes occupied by Little Auk colonies; and 3) Haplic Cryosol covered by lichen–herb–heath tundra vegetation, located on a raised marine terrace
. It is shown that : 1) Temperature of Arctic soils is connected with influence of cold thawing water; 2) Cryosols covered by wet moss tundra vegetation are the wettest and coldest; and 3) Cryosols covered by lichen-herb-heath tundra vegetation are the driest
Vegetation-permafrost relations within the forest-tundra ecotone near Old Crow, Northern Yukon, Canada
Canada ; Cold area ; Ecotone ; Forest ; Northwest Territories ; Permafrost ; Snow ; Soil temperature ; Spatial distribution ; Tundra ; Vegetation ; Yukon
Bosque ; Canada ; Distribución espacial ; Ecotono ; Nieve ; Pergelisol ; Temperatura del suelo ; Territorios del Noroeste ; Tundra ; Vegetación ; Zona fría
Old Crow Flats is a glaciolacustrine plain that straddles the forest-tundra ecotone in northern Yukon. Annual mean near-surface permafrost temperatures (Tps) measured on the Flats between 2008 and 2011 in patches of taiga, tall shrubs and low shrubs
was trapped at the patch edge. The permafrost temperature field is heterogeneous under patchy vegetation in the forest-tundra ecotone. The data suggest that it is governed by both the snow-holding capacity of local vegetation patches and the spatial
Air temperature ; Alaska ; Arctic Region ; Biodiversity ; Biogeography ; Climatic change ; Cold area ; European part of Russia ; Permafrost ; Plant cover ; Polar region ; Thawing ; Tundra ; Yamal Peninsula
Alaska ; Biodiversidad ; Biogeografía ; Cambio climático ; Cobertura vegetal ; Deshielo ; Pergelisol ; Región polar ; Rusia de Europa ; Temperatura del aire ; Tundra ; Zona fría ; Ártica
The study was conducted on the Kaffiøyra Plain (Svalbard) at several fixed sites, which represent places typical of the region : a sandy beach, a tundra plain and a moraine ridge. Analysis includes both the ground thawing depth and its near-surface
. The results highlight a rigid climate-forest disequilibrium and falsify models suggesting extensive and swift expansion of the treeline ecotone and closed forest at the expense of alpine tundra in response to anticipated future warming during the present
by reworked loess and the occurrence of several tundra gley soils. Subsequently, a cold and more arid period of dust accumulation followed after ca. 22 ka. Intensive anthropogenic activity almost totally redeposited the Holocene black soil, demonstrating