inscription
PORTAIL D'INFORMATION GÉOGRAPHIQUE

Résultats de la recherche (2358 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • The distribution and cover of plant species on Carnac Island, Western Australia
  • Modification of the effects of global climate change by plant cover structure in an agricultural landscape
  • Ecosystem ; Global change ; Heat balance ; Meteorology ; Model ; Plant cover ; Poland ; Rural landscape ; Vegetation ; Water balance
  • To grasp the impact of plant cover structure on heat balance structure the components of heat balance of six ecosystems and two landscapes were calculated by using a mathematical model. Three types of various meteorological conditions during
  • the growing season were taken into consideration. This analysis has shown that plant cover has mitigating capacities in relation to the presumed effects of global climate change. Thus, in attempts to predict global changes at local level, the mitigating
  • effects of plant cover must be taken into consideration.
  • Impact of plant cover on heat and water balance in agricultural landscapes located in humidity gradient
  • Agroclimatology ; Agroecosystem ; Bioclimatology ; Ecosystem ; Heat balance ; Plant cover ; Vegetation ; Water balance
  • Investigation on heat and water balance in agricultural landscape were carried out of for six years. The impact of plants cover and habitat moisture on structure of heat and water balances was studied. Observations of micrometeorological parameters
  • Remote sensing : land cover
  • AVHRR ; Bibliography ; Environment ; Environmental management ; Geographical information system ; Land use ; Plant cover ; Radar ; Remote sensing ; SPOT ; Vegetation index
  • Given the importance of land cover to the field of remote sensing and, in particular, the many physical geographical applications of remote sensing, this progress report will focus on recent developments in land cover research. Initially, reviews
  • of recent developments in land cover classification and land cover change lead into discussions on environmental management and environmental understanding. Finally, a brief summary of general developments in the field of remote sensing is provided.
  • The composition and conservation of Romania's plant cover
  • Altitudinal zonation ; Forest ; Human impact ; Land use ; Mountain ; Nature conservation ; Plant canopy ; Romania ; Vegetation
  • in intensity through the expansion of agriculture during the nineteenth century and the recent emphasis on industrial development. It is therefore essential that the diverse plant cover should be given the protection of national park or nature reserve status.
  • Effectiveness of grass cover in reducing risk of sediment generation on urban slopes : an example from Singapore
  • City;Town ; Experimental plot ; Human impact ; Plant cover ; Precipitation ; Rill wash;Runoff ; Singapore ; Slope ; Soil erosion
  • Rainfall interception and splash detachment with a Brussels sprouts plant: a laboratory simulation
  • , are determined without a plant cover and with the cover of a single Brussels sprouts plant. The detachment rate was found rather surprisingly to be inversely related to the energy of the rainfall under the plant and positively related to the number of leaves.
  • Selective transport of sediment related to rainfall kinetic energy, plant cover-stoniness and clearing
  • Experiment plot ; Grain size distribution ; Huesca ; Plant cover ; Precipitation ; Rill wash ; Roughness ; Semi-arid area ; Soil erosion ; Spain ; Splash ; Vegetation ; Water erosion
  • Vegetation succession and soil cover transformation after extreme flood : a case study from the Sázava River floodplain
  • Czech Republic ; Flood ; Floodplain ; Plant cover ; Plant succession
  • The goal of this study was to assess impact of flood on soil and vegetation cover in the Sázava river floodplain after an extreme spring flood in 2006.There was a significant difference in species' composition between eroded sites and sites on thick
  • Fluvial adjustments to soil erosion and plant cover changes in the Central Spanish Pyrenees
  • Fluvial dynamics ; Meander ; Mountain ; Plant colonization ; Pyrénées ; Reforestation ; Sediment budget ; Soil erosion ; Spain ; Stream flow ; Watershed
  • Depopulation and farmland abandonment resulted in plant recolonization in formerly cultivated areas, causing a decrease in runoff and sediment yield. As a consequence, most Pyrenean rivers tend to reduce the width of the alluvial plain
  • Environmental impact of introducing plant covers in the taluses of terraces : implications for mitigating agricultural soil erosion and runoff
  • Agropedology ; Andalusia ; Cultivated land ; Erosion control ; Granada ; Heavy metals ; Plant cover ; Soil erosion ; Spain ; Subtropical zone ; Terrace ; Water erosion ; Water quality
  • Agropédologie ; Andalucía ; Couverture végétale ; Erosion des sols ; Erosion hydrique ; Espagne ; Granada ; Lutte contre l'érosion ; Métaux lourds ; Plante aromatique ; Plante médicinale ; Qualité de l'eau ; Sol cultivé ; Terrasse ; Zone
  • The aim of this study was to test, under field conditions, the response of runoff, soil erosion, nutrient, carbon losses, and heavy-metal transport to different plant covers, including aromatic and medicinal plants and native vegetation during two
  • hydrological years. The study area is located in a coastal area of the south-eastern part of the Iberian Peninsula at Almuñécar (Granada, SE Spain). The results support the recommendation of using plant covers with multiple purposes (aromatic–medicinal–culinary
  • Typology of the districts in Czechia based on land cover structure
  • Biogeography ; Czech Republic ; District ; Plant cover ; Spatial differentiation
  • The objective of this report is to set out a district typology according to land cover structure, and this will be achieved through the use of statistical methodologies. An intermediate objective is to establish land cover change trends
  • Egységes európai felszínborítási adatbázis a Corine Land Cover program
  • Une base de données uniforme européenne du couvert végétal, le programme Corine Land Cover
  • Data base ; Environment ; Europe ; Geographical information system ; Plant canopy ; Practice of geography
  • the Corine Land Cover system can serve as the base for examination of changing land cover conditions. - (JS)
  • Remote sensing methods in medium spatial resolution satellite data land cover classification of large areas
  • AVHRR ; Cartography ; Classification ; Data processing ; Forest ; Inventory ; LANDSAT ; Methodology ; NOAA ; Plant cover ; Remote sensing
  • The objective of this paper is to review and assess general medium spatial resolution satellite remote sensing land cover classification approaches with the goal of identifying the outstanding issues that must be overcome in order to implement
  • a large-area, land cover classification protocol.
  • Remote sensing based analysis of land cover and land cover change in Central Sulawesi, Indonesia
  • Indonesia ; Land use ; Plant cover ; Remote sensing
  • In this study, the author gains information about land cover and land cover change in Central Sulawesi on the basis of a Landsat 7/ETM+ time series. He applies a modern object-oriented approach which allows the analysis of non-spectral features (e.g
  • . shape, spatial relations, thematic data) and goes beyond the pure isolated statistical examination of each pixel's spectral values offered by traditional remote sensing techniques. The gathered results on land cover change provide essential information
  • Dune mobility and vegetation cover in the southwest Kalahari Desert
  • Aeolian features ; Aeolian transport ; Arid area ; Botswana ; Desert ; Dune ; Plant cover ; Wind erosion
  • Himalayan foret-cover changes in historical perspective: a case study in the Kaghan Valley, northern Pakistan
  • Biogeography ; Deforestation ; Forest ; Himalaya ; Historical geography ; Nineteenth Century ; Pakistan ; Plant cover ; Twentieth Century
  • Tracking invasive land covers in India, or why our landscapes have never been modern
  • Agricultural intensification ; Human ecology ; India ; Land use ; Landscape ; Modernization ; Plant cover ; Rajasthan ; Remote sensing ; Resource management ; Semi-arid area
  • This article explores the land-cover effects of state-sponsored modernization efforts in the semiarid Godwar region of Rajasthan, India. Using household production information and the discourse of state planners, the research explores the land
  • covers that result from agricultural intensification, biodiversity preservation and resource conservation. Through these efforts, state planners have attempted to partition those land uses seen as social from those seen as natural and enforce a modernist
  • purification of land covers. Despite these efforts, hybride and impure land covers have proliferated across the landscape. The results of analysis is that our landscapes have never been modern.
  • Macrofossil plants and pollen assemblages on the last glacial in Sanjiang plain.
  • Analysis of fossil plants and pollen spores reveals that the climate of Sanjiang plain in the late Pleistocene was humid and cold with annual precipitation higher than that of present It was covered with cold temperature needleleaf deciduous forest
  • Influence of topography on some vegetation cover properties
  • Human impact ; Kazakhstan ; Numerical model ; Phytocenosis ; Plant cover ; Soil properties ; Topography ; Vegetation ; Vegetation dynamics ; Watershed
  • The AA. study the influence of 9 local, non-local and combined quantitative topographic characteristics on vegetation cover, altitude and density in 4 areas of the Rudny Altai. Differentiation of plant properties is shown to depend on relief
  • the advisability of the use of digital models and maps of indicated topographic characteristics in plant investigations.