Solr Search · GéoProdig, portail d'information géographique

Effects of slope angle on mass movement by tree uprooting
An examination of 189 well-delineated mounds and pits in sandy soils of northern lower Michigan, all presumably formed by tree uprooting, was used to determine the effects of slope angle on morphology and volume, and to assess the potential
1995

Climate in southwestern Ontario, Canada, between AD 1610 and 1885 inferred from oxygen and hydrogen isotopic measurements of wood cellulose from trees in different hydrologic settings
Oxygen and hydrogen isotopes were measured in wood celullose and cellulose-nitrate from trees that grew in different hydrologic settings in southwestern Ontario. An isotope model that accounts for isotopic fractionations associated
1995

Himalayas. Local challenges to global agendas: conservation, economic liberalization and the pastoralists' rights movement in Tanzania. Whose woods are these? Counter-mapping forest territories in Kalimantan, Indonesia. Trees as tools, trees as text
1995

On August 28, 1981, the Crow Canyon drainage basin in central Nevada was burned by a lightning-generated wildfire that destroyed the vegetation cover consisting primarily of juniper trees, sagebrush, and desert grasses. The geomorphic impact
of the wildfire was assessed on the basis of aerial photography, measurements of sediment movement on hillslopes using charred tree trunk as erosion indicators, and surveys of the valley floor, axial channel, and alluvial fan.
1995

This study demonstrates the potential of Pinus flexilis James (Limber pine) in southwestern Alberta to provide long dendroclimatic records of precipitation. The AA. present a 487-yr reconstruction of annual precipitation based on tree-ring widths
from living and subfossil Pinus flexilis obtained from three sample sites. They compare this record with the results of previous tree-ring studies to examine the degree of synchrony between droughts in southern Alberta and other portions of the North
1995

Chile ; Competitiveness ; Economic efficiency ; Economic policy ; Forest policy ; Forestry ; Industrial policy ; Logging ; Stand treatment ; Tree species ; Wood
1995

Archeological site ; Deglaciation ; Geo-ecology ; Holocene ; Mountain ; Palaeo-environment ; Quaternary ; Soil science ; Sweden ; Tree line ; Vegetation
1995

Climate and human use define three major land-use zones in the montane oak forest of the Pacific slope of the Cordillera de Talamanca in Costa Rica. The fruit tree zone (2000 to 2300 m) is the most productive; the charcoal zone (2700-3000 m
1995

Chestnut tree ; Cévennes ; France ; Languedoc-Roussillon ; Phytogeography ; Plant canopy ; Quantitative ecology ; Remote sensing ; Spatial structure ; Vegetation index
1995

Altitude ; Deforestation ; Geographical information system ; Geomorphology ; Lithology ; Mountain ; Permafrost ; Pyrénées ; Slope gradient ; Spain ; Spatial variation ; Statistics ; Tree line
1995

The dynamics of a cliff-top dune system located at the foot of the Mackenzie Mountains was reconstructed by radiocarbon dating and tree ring analysis of forest paleosols in eolian sediments. The AA. identify the set of factors that controlled
1995

Agrarian structure ; Hedge ; Land consolidation ; Luxembourg ; Rural area ; Rural landscape ; Tree ; Vegetation ; Vegetation dynamics
1995

Arkansas ; Carrying capacity ; Channel geometry ; Flood ; Floodplain ; Fluvial processes ; Missouri ; River bed ; Tree ; United States of America ; Vegetation
1995

C 14 dating ; Moraine ; Mountain ; Palaeo-environment ; Palaeoclimate ; Palynology ; Pollen diagram ; Quaternary ; Tree line ; United States of America ; Vegetation ; Wyoming
1995

Biology and valorization of deciduous trees in agriculture abandonment mountains areas
secteurs (150 ha). Les perspectives de valorisation de la forêt spontanée sont synthétisées sur une carte de potentialités, véritable outil d'aide à la décision es élus et propriétaires.#Deciduous trees afforestations stemming from agriculture abandonment
1995

Holocene ; Italy ; Palaeo-environment ; Palaeoclimatology ; Palynology ; Peat bog ; Pollen diagram ; Quaternary ; Tree line ; Valle d'Aosta ; Vegetation
1995

La notion de montagne méditerranéenne

Biogeography ; Europe ; Flood ; France ; Hydraulic works ; Italy ; Man-environment relations ; Mediterranean area ; Mountain ; Olive tree ; Rural landscape ; Rural settlement ; Spain ; Transhumance ; Water ; Water resources
1995

events within the study site highlight a runoff-gradient pattern along the slope. Water harvesting experiments were also conducted on the slopes of the watershed. Five tree species were used for planting within the minicatchments.
1995

Based on two kinds of proxy data, a tree-ring width chronology at Huashan and the wetness/dryness grade series around Xi'an in north-central China, this present study demonstrates how different types of proxy climate records can be combined to give
1995

Résultats de la recherche (26 résultats)