inscription
Portail d'information géographique

Résultats de la recherche (3594 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • Acción antrópica ; Aprovechamiento del suelo ; Bosque ; Desarrollo regional ; Eslovenia ; Karstificación ; Plantación forestal ; Repoblacíon forestal ; Siglo 19 ; Siglo 20 ; Siglo 21
  • Forest ; Forest stand ; Human impact ; Karstification ; Land use ; Nineteenth Century ; Reforestation ; Regional development ; Slovenia ; Twentieth Century ; Twenty-first century
  • In this paper the intense land-use changes in the Karst region and the surrounding karst areas is presented. People first thoroughly cleared the previously forested landscape, and then in the nineteenth century planned reforestation began. After
  • the Second World War uncontrolled afforestation predominated. At the beginning of the twenty-first century, predominantly low-quality forest already covered two-thirds of the Karst region. - (IKR)
  • Bosque ; Dinámica de la vegetación ; Estados Unidos ; Modelo ; Modelo logit ; Ocupación del suelo ; Plantación forestal ; Vegetación ; Árbol
  • Forest ; Forest stand ; Land utilisation ; Logit model ; Model ; Tree ; United States of America ; Vegetation ; Vegetation dynamics
  • Biodiversidad ; Bosque ; Discontinuidad ; Europa ; Explotación forestal ; Gestión ; Linde del bosque ; Paisaje ; Plantación forestal
  • Biodiversity ; Discontinuity ; Europe ; Forest ; Forest edge ; Forest stand ; Landscape ; Logging ; Management
  • Campo semiárido ; Campo árido ; Degradación de los suelos ; Lucha contra la erosión ; Plantación ; Propiedades del suelo ; Suelo ; Turquía ; Árbol
  • [b2] Forest Management Directorate, Pazar, Turquie
  • Aprovechamiento del suelo ; Campo semiárido ; Carbono ; China ; Degradación del medio ambiente ; Geoquímica ; Plantación ; Propiedades del suelo ; Restauración ecológica ; Suelo cultivado ; Árbol
  • in economic forests than in protective forests and were higher in evergreen coniferous forests than in broadleaved deciduous forests.
  • China ; China del Sur ; Conífero ; Ecología ; Estación experimental ; Modelo ; Nitrógeno ; Plantación ; Zona subtropical
  • PnET-CN model describes the biogeochemical cycles of carbon (C) and nitrogen (N) and can assist in estimating carbon sequestration potential. For validation of PnET-CN, data from coniferous forest plantations in southern China was used. The results
  • obtained from the validation test revealed that PnET-CN model can be used to simulate carbon sequestration of planted coniferous forests in southern China to a high level of precision. Sensitivity analysis suggests that great care should be taken
  • in developing generalizations as to how forests will respond to a changing climate. Future improvement of PnET-CN should focus on seasonal foliar N dynamics and the effects of water stress on autotrophic respirations in subtropical coniferous plantations
  • Data processing ; Eucalyptus ; Forest ; KwaZulu-Natal ; LiDAR ; Plant canopy ; Plantation ; Remote sensing ; South Africa
  • Bosque ; Cubierta vegetal ; Eucalipto ; Plantación ; Teledetección ; Tratamiento de datos
  • This study explores the utility of small-footprint, discrete return lidar data in deriving important forest structural attributes with the primary objective of estimating plot-level mean tree height, dominant height, and volume of Eucalyptus grandis
  • -based approaches for forest structural assessment in commercial plantations, even though further research is required on improving stems per hectare (SPHA) estimation.
  • Bienes raíces ; Biodiversidad ; Comunidad rural ; Derecho de propiedad ; Desarrollo ; Desigualdad social ; Geografía del desarrollo ; Gestión del medio ambiente ; Medio ambiente ; Plantación forestal ; Relación hombre-medio ambiente ; Sociedad rural
  • Africa ; Biodiversity ; Development ; Development geography ; Environment ; Environmental management ; Forest stand ; Land ; Man-environment relations ; Property right ; Rural community ; Rural society ; Social inequality
  • Acción antrópica ; Arbolado ; Erosión de los suelos ; Plantación ; Velocidad de erosión
  • The case study was established in Alfisols and slopes ranging from 30 to 60% in Guanacaste, Costa Rica, and compares secondary forests with mature teak plantations and young teak plantations under different management regimes. The common myth
  • of high soil erosion rates in teak plantations is refuted. Moderate or low erosion rates are usually found in teak plantations. Prescribed fires in some plantations have probably caused the false myth. It is concluded that poor forest management
  • Atribución de espacio ; Bienes raíces ; Coparticipación ; Estados Unidos ; Estrategia territorial ; Medio ambiente ; Neoliberalismo ; Plantación forestal ; Propiedad fundaria ; Protección del medio ambiente
  • Environment ; Environmental conservation ; Forest stand ; Land ; Landed property ; Michigan ; Neo liberalism ; Partnership ; Spatial allocation ; Territorial strategy ; United States of America
  • Análisis espacial ; Aprovechamiento del suelo ; Arboricultura ; Cadena de Markov ; Chile ; Metodología ; Modelo ; Ocupación del suelo ; Plantación ; Prospectiva ; Repoblacíon forestal
  • Bienes raíces ; Comunidad rural ; Grupo social ; Plantación ; Política gubernamental ; Repoblacíon forestal ; Resiliencia ; Silvicultura ; Unidad familiar ; Viêt Nam ; Vulnerabilidad
  • Altitude ; Burma ; China ; Expansion ; Forest ; Frontier region ; Hevea ; Laos ; Plantation ; Slope gradient ; Spatial analysis ; Topography ; Yunnan
  • Altitud ; Análisis espacial ; Birmania ; Bosque ; China ; Hevea ; Inclinación de la vertiente ; Laos ; Plantación ; Región fronteriza ; Topografía ; Yunnan
  • Ecología ; Estudio de impacto ; Geografía histórica ; Plantación ; Protección del medio ambiente ; Repoblacíon forestal ; Silvicultura ; África del Sur
  • Agrología ; Azores ; Erosión de los suelos ; Erosión hídrica ; Eucalipto ; Fuego ; Lucha contra la erosión ; Plantación ; Portugal ; Propiedades del suelo ; Práctica de cultivo ; Simulacíon de lluvia
  • [b2] US Dept. of Agriculture, Forest Service, Rocky Mountain Research Station, ID, Moscow, Etats-Unis
  • From forest struggle to forest citizens ? Joint forest management in the unquiet woods of India's Jharkhand
  • Forest ; Forest policy ; Forest resources ; Forestry ; India ; Logging ; Participation ; Resource management
  • The AA. consider the role played by forest struggles and forest intellectuals in the rewriting of India's forest policies. They also evaluate the utility of a moral economy framework in guiding joint forest management policies. They draw on village
  • -level fieldwork to highlight the value of an approach to the management of Degraded Protected Forests that offer a key role to active and informed forest citizens.
  • Forest ; Index ; Landscape ecology ; Methodology ; Slovenia
  • The article presents methodology of defining forest fragmentation on raster data. Eight indices (forest proportion, forest continuity, moderated weighted forest area, edge zone proportion, average forest depth, average forest dismemberment, average
  • distance from the forest, average forest isolation) quantitatively define forest dismemberment, fragmentation respectively forest disintegration stage. Presented methodology is partly adopted, further modified and adapted to Slovenian conditions. - (IKR)
  • Ecological studies of mixed forests in Nopporo National Forest, Central Hokkaido, Japan. Relations between the distribution of aged forests and environmental factors
  • In Nopporo National Forest, thirteen forest communities which were determined by dominant species and three soil types were observed. - (SGA)
  • 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
  • The basics of sustainable forest management in forest promotional complexes
  • Biodiversity ; Concept ; Dead wood ; Decision making process ; Ecosystem ; Environmental management ; Forest ; Forestry ; Sustainable development
  • The intent to create Forest Promotional Complex (FPC) was introducing a new quality to Polish forestry – by taking into account social preference for forests, by embracing local community needs, by compromising forest production with nature
  • protection and to introduce the rules of sustainable and balanced forest development. Main subject of this study is a dead wood and its ecological functions in managed forests and chosen FPC reserves. The problem of naturalization or ecologisation of forest
  • [b1] Forest Ecology Unit, Forest Research Unit, Raszyn, Pologne