Résultats de la recherche (127 résultats)
- > 1993 (supprimer)
Affinez votre recherche
Par Collection Par Auteur- BARSCH, D., (Editeur scientifique) (2)
- MAUSBACHER, R., (Editeur scientifique) (2)
- RIEDACKER, A., (Editeur scientifique) (2)
- SIMON, L. (2)
- Universität Kaiserslautern. Fachbereich Mathematik, Allemagne, (Université de soutenance) (2)
- ANDERSON, P. M. (1)
- BARSCH, H. (1)
- BERG, M.P. (1)
- BERNARD-ALLÉE, P. (1)
- BIRKELAND, P. W. (1)
- BLASCHKE, P. M. (1)
- BOTTNER, P. (1)
- BOX, E. (1)
- BREYMEYER, A. (1)
- BRIFFA, K. R. (1)
- BROWN, A.G. (1)
- BRUBAKER, L. B. (1)
- BUTOVEC, G.N. (1)
- BÉGUIN, E. (1)
- CALVO DE ANTA, R. (1)
- 1993 (127)
- Forest ; Forest policy ; Forestry ; Portugal ; Stand treatment (2)
- Foresterie ; Forêt ; Politique forestière ; Portugal ; Sylviculture (2)
- Acid rain ; Atmospheric circulation ; Forest ; France ; Geochemistry ; Impact ; Multivariate analysis ; Pollution ; Precipitation ; Vosges ; Weather type (1)
- Acid rain ; Atmospheric pollution ; Bioclimatology ; Cartography ; Environment ; Forest ; France ; Historical geography ; Information ; Pollution ; Precipitation ; Press (1)
- Acid rain ; Atmospheric pollution ; Ecosystem ; Environment ; Forest ; Krigeage ; Pollution ; Spatial variation ; Statistics (1)
- Acid rain ; Climatic event ; Drought ; Ecosystem ; Forest ; Forest fire ; France ; Freezing ; Human impact ; Natural hazards ; Pollution ; Storm ; Wind (1)
- Action anthropique ; Allemagne ; Bayern ; Chaîne de sols ; Forêt ; Propriétés du sol ; Pédologie (1)
- Action anthropique ; Arbre ; Biogéographie ; Cap-Vert ; Carte de la végétation ; Dynamique de la végétation ; Formation arbustive ; Forêt ; Paysage ; Sahel ; Savane ; Sénégal ; Variation saisonnière ; Végétation (1)
- Action anthropique ; Argentine ; Ecosystème ; Environnement ; Exploitation forestière ; Forêt ; Gestion des ressources ; Montagne ; Pâturage ; Ressource naturelle ; Zone subtropicale (1)
- Action anthropique ; Australie ; Feu ; Forêt ; Forêt tropicale ; Mousson ; Northern Territory ; Photo-interprétation ; Urbanisation ; Utilisation du sol (1)
- Action anthropique ; Banat ; Drainage artificiel ; Erosion des sols ; Evolution du sol ; Irrigation ; Roumanie ; Sol (1)
- Action anthropique ; Belgorod ; Dégradation des sols ; Evolution du sol ; Forêt ; Russie ; Sol ; Steppe (1)
- Action anthropique ; Biogéographie ; Canada ; Dynamique de la végétation ; Déboisement ; Environnement ; Northwest Territories ; Végétation ; Zone froide (1)
- Action anthropique ; Canaries ; Déboisement ; Forêt ; Géographie historique ; Géomorphologie ; Paysage ; Volcanisme (1)
- Action anthropique ; Changement global ; Crue ; Dynamique de versant ; Erosion des sols ; Fluviatile ; Forêt tropicale ; Géochimie ; Géomorphologie ; Précipitation ; Type de temps ; Zone intertropicale (1)
- Action anthropique ; Changement global ; Effet de serre ; Forêt ; France ; Impact ; Pollution ; Pollution atmosphérique (1)
- Action anthropique ; Costa Rica ; Diagramme pollinique ; Feu ; Forêt ; Palynologie ; Paléo-environnement ; Paléo-écologie ; Stratigraphie ; Sédiment lacustre ; Variation climatique ; Végétation (1)
- Action anthropique ; Couvert végétal ; Forêt ; Montagne ; Protection de la nature ; Roumanie ; Utilisation du sol ; Végétation ; Zonation altitudinale (1)
- Action anthropique ; Culture sur brûlis ; Déboisement ; Développement rural ; Forêt ; Forêt tropicale ; Madagascar ; Protection de la nature ; Réserve naturelle (1)
- Action anthropique ; Diagramme pollinique ; Dynamique de la végétation ; Espagne ; Forêt ; Madrid ; Palynologie ; Paléo-environnement ; Quaternaire ; Reboisement ; Tourbe (1)
- Facteurs anthropiques de l'érosion (3)
- Emission de gaz à effet de serre : différents aspects (2)
- Some contributions to the study of landforms and geomorphic processes (2)
- A colonial tree : the eucalyptus of the Palni Hills (1)
- A comparison of earthflow movement mechanisms on forested and grassed slopes, Raukumara Peninsula, North Island, New Zealand (1)
- A questão da florestação em Portugal : um processo de longo duracão (1)
- A tree-ring densitometric transect from Alaska to Labrador. Comparison of ring-width and maximum-latewood-density chronologies in the conifer belt of northern North America (1)
- A vegetation history of the far north of New Zealand during the Late Otira (last) glaciation (1)
- Adaptations aux changements climatiques : écosystèmes et habitats du bassin du Saint-Laurent (Cornwall, Québec) (1)
- Afrique, paléoclimats et déforestation (1)
- Agriculture (1)
- Agricultures tropicales. Une sélection d'ouvrages et de périodiques francophones (1)
- Aporte comparativo de la textura en segmentacion de imagen SPOT. Aplicación al bosque de Paimpont (Ille-et-Villaine) (1)
- Apport comparatif de la texture en segmentation d'image Spot. Application à la forêt de Paimpont (I. V.) (1)
- Approche géographique de la composition chimique des précipitations vosgiennes (1)
- Arc atlantique (1)
- Balanço da florestação em Portugal nas últimas décadas (1)
- Between the forest and the big lagoon: the microeconomy of Kotu Island in the Kingdom of Tonga (1)
- Bilan du patrimoine forestier dans les cinquante dernières années (1)
- The variability of atmospheric deposition to forests. The effects of canopy structure and forest adges
- Atmospheric pollution ; Environment ; Forest ; Netherlands (The) ; Pollution
- The impact of forest canopy structure on deposition amounts was studied by extensive throughfall monitoring in thirty different forest stands in the Netherlands. It is concluded that emission reductions on a regional and (inter)national scale level
- 1993
- Tropical rain forests
- Bibliography ; Biogeography ; Biological indicator ; Deforestation ; Ecosystem ; Environment ; Forest ; Tropical rain forest ; Vegetation dynamics
- The A. briefly reviews major themes in published tropical forest research between 1991 and 1992 inclusive in an attempt to identify what questions are believed to be important.
- 1993
- Fir tree ; Forest ; Forest resources ; Forestry ; Nepal ; Resource management
- Internal dynamics of the fir forest make a steady flow of Abies spectabilis timber in Nepalese village forests impossible to sustain. Management practices exacerbate the problem. Alternative management options are presented.―(DWG)
- 1993
- Tropical deforestation and forest management under the system of concession logging: a decision-theoretic analysis
- Behaviour ; Cost-benefit analysis ; Decision ; Deforestation ; Forest ; Forest policy ; Forest resources ; Logging ; Markov chain ; Resource management ; Tropical rain forest
- 1993
- Structure and composition of a riparian forest edge
- Biogeography ; Ecology ; Floodplain ; Forest ; Iowa ; Meander ; United States ; Vegetation ; Vegetation dynamics
- To examine specific changes in vegetation initiated by the lateral migration of a river channel, the AA. quantify the structures and composition of woody trees and shrubs along a cutbank forest edge in an Iowa floodplain.
- 1993
- The Tana river forests, Kenya : small, dynamic, and endangered
- Biogeography ; Ecosystem ; Flood ; Floodplain ; Forest ; Kenya ; Nature conservation ; Stream ; Traveller's tale ; Vegetation dynamics
- 1993
- Properties, dynamics and association of soils on high elevations of the Bavarian Forest (Germany) as illustrated by a toposequence on gneiss debris
- Bavaria ; Forest ; Germany ; Human impact ; Soil catena ; Soil properties ; Soil science
- The soils were surveyed, described and examined at a remote forested high-elevation site of the Bavarian Forest (Germany). They derive from periglacial gneiss debris consisting of an upper, loose stratum and an indurated zone below. The different
- 1993
- Forest resources in a Nepali village in 1980 and 1990 : the positive influence of population growth
- Forest ; Forest resources ; Himalaya ; Land use ; Mountain ; Nepal ; Population pressure ; Resource management ; Village
- Between 1980-1990, the village of Bhogteni in the Middle Hills of central Nepal improved their forests despite an annual population growth rate of 2,5 percent. This empirical study poses provocative ideas on population pressure, resource use
- 1993
- The correlation between certain micrometeorological parameters with leaf diffusive resistances of a hardwood forest
- Atmospheric moisture ; Bioclimatology ; Climate ; Evapotranspiration ; Forest ; Microclimate ; Radiation ; Temperature ; Vegetation ; Water cycle;Water circulation
- 1993
- Political aspects of concern over Russia's foreste
- Forest ; Historical account ; Russia ; Tradition
- 1993
- Forest ; Forest policy ; Forestry ; Portugal ; Stand treatment
- L'évolution de la politique forestière au Portugal depuis le XVIIe siècle ; la formation de l'idéologie de la forestation ; la situation actuelle de la forêt portugaise.
- 1993
- Fire impacts on soil nutrients and soil erosion in a Mediterranean pine forest plantation
- Ecosystem ; Fire ; Forest ; Israel ; Rill wash;Runoff ; Soil ; Soil erosion ; Soil properties ; Soil science
- wildfire at the end of summer 1988. The results suggest that light and moderate forest fires may increase soil fertility without cousing a marked difference in soil runoff and erosion.
- 1993
- Structural variation and dynamics of lodgepole pine forests in Lassen Volcanic National Park, California
- Biogeography ; California ; Climatic variability ; Forest ; Microclimate ; National park ; Pine ; Soil properties ; United States ; Vegetation dynamics
- Diameter structure, age/diameter regressions, and stem dispersion patterns reveal spatial variability in lodgepole pine forest structure and dynamics in Lassen Volcanic National Park (LVNP). Spatial variability in this early successional species
- 1993
- Periglacial overlaying strata in the Bavarian forest methods for their stratigraphic division and questions about their ecological significance
- Bavaria ; Ecology ; Forest ; Germany ; Loess ; Pedogenesis ; Periglacial features ; Soil properties ; Stratigraphy
- Character and stratigraphic division of the overlaying strata of the Bavarian Forest are described. The differentiation of stratum boundaries carried out in the field is verified by means of a wide spectrum of laboratory analyses. Different
- 1993
- Macrofossil and tree-ring evidence for a long-term forest succession and Mid-Holocene Hemlock decline
- Biogenic action;Biogenic process ; Biostratigraphy ; Canada ; Dendrochronology ; Dendrology ; Dune ; Forest ; Holocene ; Palaeo-environment ; Palaeoclimate ; Palynology ; Quaternary ; Quebec
- The objective of this study is to provide a record of the long-term development of forests on dune soils progressively affected by paludification. The assemblage of large fossil tree stems was analyzed to test the pathogen hypothesis and to evaluate
- 1993
- Forest ; Forest policy ; Forestry ; Portugal ; Stand treatment
- 1993
- A comparison of earthflow movement mechanisms on forested and grassed slopes, Raukumara Peninsula, North Island, New Zealand
- Surface movement rates on forested earthflows are 2-3 orders of magnitude less than those on grassed earthflows. Subsurface deformation results largely from extension flow on grassed earthflows and from compression flow on forested earthflows
- . A rafting mechanism in which blocks of roots from individual trees interact with those of neighbouring trees to retard surface movement is used to explain deformation profiles of forested earthflows. The rheology of earthflow materials is changed
- 1993
- Some meteorological conditions associated with forest fires in Galicia (Spain)
- Applied climatology ; Atmospheric dynamics ; Atmospheric moisture ; Correlation ; Fire ; Forecast ; Forest ; Galicia ; Spain
- 1993
Effects on bedload transport of experimental removal of woody debris from a forest gravel-bed stream
- Effects on bedload transport of experimental removal of woody debris from a forest gravel-bed stream
- Alaska ; Carrying capacity ; Channel geometry ; Ecosystem ; Fluvial processes ; Forest
- 1993
- Agroforestry ; Deforestation ; Forest ; Land use ; Organic materials ; Savanna ; Soil ; Soil erosion ; Tropical zone
- This article reviews the current status of organic matter in tropical soils beneath forest and savanna vegetation types and the contribution made to atmospheric carbon dioxide concentrations from decomposition processes in the soil and as a result
- of tropical forest clearance. The second aim is to examine the role of soil organic matter in stabilizing soil structure, in nutrient cycling and in ion retention in tropical soils and to assess the effects of forest clearance and subsequent cultivation
- 1993