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Résultats de la recherche (212 résultats)

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  • Programmes pan-européens de recherche sur les modifications des paysages
  • Europe ; Human impact ; Land use ; Landscape ; Landscape dynamics ; Landscape ecology ; Research programme
  • Action anthropique ; Dynamique du paysage ; Ecologie du paysage ; Europe ; Paysage ; Programme de recherche ; Utilisation du sol
  • Author reports on Pan-European research programmes and networks specialised in the field of landscape ecology. The main aim of these programmes is to clarify the relations between physical geographical conditions, anthropogenic effects and land use
  • 2002
  • Arctic Region ; Atmospheric dynamics ; Environment ; Global change ; International cooperation ; Ocean atmosphere interaction ; Palaeo-ecology ; Research programme
  • Arctique ; Changement global ; Coopération internationale ; Dynamique de l'atmosphère ; Ecodynamique ; Environnement ; Interaction océan-atmosphère ; Paléo-écologie ; Programme de recherche
  • Analyse des perspectives de recherches sur l'environnement des hautes latitudes dans le contexte de programmes internationaux sur l'étude de l'Arctique, développés, approuvés et mis en oeuvre ces dernières années. Une attention particulière est
  • portée à l'examen du programme ACYS d'étude de la dynamique de l'hydro- et de l'atmosphère et de leur interaction aux hautes latitudes dans le contexte des changements globaux du climat ainsi qu'à l'analyse des données paléo-écologiques.
  • 2002
  • La dynamique spatiale et temporelle des écosystèmes au coeur des programmes de préservation de l'environnement.
  • Ecosystem ; Environmental conservation ; Forest ; Heathland ; Human impact ; Nature conservation ; Vegetation dynamics
  • 2002
  • Applied geomorphology ; Coastal geomorphology ; Environmental management ; Erosion ; Fluvial dynamics ; France ; Geoarchaeology ; Geography ; Geomorphology ; Inter-disciplinary approach ; Internationalization ; Karst ; Research ; Years 1990-99
  • échelles spatio-temporelles. Les travaux français s'inscrivent de plus en plus dans des programmes interdisciplinaires et/ou internationaux, et intègrent souvent une dimension appliquée.
  • 2002
  • A nonlinear dynamical model of landslide evolution
  • A nonlinear dynamical model for the evolution of landslide is proposed. The parameters of this model are obtained through an improved iterative algorithm of inversion developed in the paper. Based on the nonlinear dynamical model and nonlinear
  • dynamical systems (NDS) theory, the approaches to determining the Lyapunov exponents, the predictable timescale and the stability criterion of the evolutional state of landslide are given. A case study of the Xintan slope is presented to illustrate
  • the capability and merit of the nonlinear dynamic model.
  • 2002
  • Vegetation growth in rivers : influences upon sediment and nutrient dynamics
  • Biomass ; Ecosystem ; Fluvial dynamics ; Geochemistry ; Nutrient ; Sediment transport ; Stream ; Vegetation
  • of macrophyte growth on instream nutrient dynamics is discussed as an illustration of the potential for macrophytes to affect fluvial system functioning.
  • 2002
  • Disturbance effects of human activities on Rangifer tarantus habitat : implications for life history and population dynamics
  • Arctic Region ; Biogeography ; Ecosystem ; Habitat ; Human impact ; Population dynamics ; Subarctic zone ; Zoogeography
  • 2002
  • European integration and the spatial dynamics of manufacturing-employment change
  • Competitiveness ; Employment ; Europe ; European Union ; European integration ; Industrial branch ; Industry ; Job creation ; Location ; Shift-share analysis ; Spatial dynamics ; Specialization
  • This dynamics is examined in thirteen European Union countries between 1978 and 1996, mainly through the utilisation of shift-share techniques. The key finding is that the geography of manufacturing employment has remained almost intact
  • 2002
  • Spatial economic networks with multicriteria producers and consumers : statics and dynamics
  • Consumption ; Decision ; Market ; Multi-criteria analysis ; Network ; Production ; Spatial economy ; Spatial system ; System dynamics
  • 2002
  • Channel dynamics of a medium sized lowland river (Mulde, Sachsen-Anhalt, Germany)
  • Aerial photography ; Erosion ; Fluvial processes ; Germany ; Historical mapping ; Hydrology ; Landscape ; Landscape dynamics ; Saxony-Anhalt
  • 2002
  • Mires of Finland : regional and local controls of vegetation, landforms, and long-term dynamics
  • Biostratigraphy ; Climatic variation ; Ecosystem ; Finland ; Holocene ; Humid environment ; Palaeo-environment ; Peat bog ; Typology ; Vegetation dynamics
  • zone, the aapa mire zone, and the palsa mire zone. Research on Finnish peat deposits has also shown that not all peat-stratigraphical changes are caused by past climate variations. They can also be due to the natural growth dynamics of the mires
  • 2002
  • Coastal dune ; Coastal dynamics ; Coastal geomorphology ; Doline ; Fluvial dynamics ; Geomorphology ; Hydrology ; Land use ; Landscape dynamics ; Malagasy Republic ; Thematic map ; Tropical karst ; Vegetation ; Vegetation dynamics
  • 2002
  • Fluvial sediment transport dynamics in small alpine rivers. First results from two upper Bavarian catchments
  • 2002
  • Computational fluid dynamics and the physical modelling of an upland urban river
  • This paper describes the application of a commercially available, three-dimensional computational fluid dynamic (CFD) model to simulate the flow structure in an upland river that is prone to flooding. Simulations use a rectangular channel geometry
  • 2002
  • Similarities and dissimilarities between the dynamics of sand and dust during wind erosion of loamy sandy soil
  • The AA. examine the aeolian dynamics of sand and dust during a wind erosion event on loamy sandy soil in Northern Germany. The large percentage of dust (up to 32%) in the topsoil and the high frequency of wind erosion events make the region suitable
  • 2002
  • Dynamics of secondary airflow and sediment transport over and in the lee of transverse dunes
  • Recent research literature on secondary airflow and sediment transport patterns over flow-transverse dunes is reviewed. Various issues surrounding the behaviour, modelling and sedimentological implications of near-surface airflow dynamics over dunes
  • 2002
  • Urban rent and urban dynamics : the determinants of urban development in Italy
  • City size ; Demographic change ; Housing cost ; Italy ; Land rent ; Periurban development ; Town ; Urban attraction ; Urban dynamics ; Urban growth
  • 2002
  • Age structure and regeneration dynamics of sugar maple at the deciduous/boreal forest ecotone, Ontario, Canada
  • Boundary ; Canada ; Climatic warming ; Deciduous forest ; Ecosystem ; Ecotone ; Forest ; Global change ; Microclimate ; Ontario ; Vegetation dynamics
  • 2002
  • Atmospheric dynamics ; Caspienne Sea ; Coastal dynamics ; Coastal environment ; European part of Russia ; Ocean-atmosphere interface ; Storm wave ; Wind
  • 2002
  • Effects of environmental changes on hydrology and riverbed dynamics in the Congola-basin, NE Nigeria
  • 2002