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Résultats de la recherche (127 résultats)

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  • sites were selected in 3 categories of land use/vegetation cover (green forest, pine forest and cropped areas). Infiltration is extremely rapid under green forest but falls considerably under pine forest and in formerly cropped soils. The statistical
  • the vulnerability of Andisols' soil properties and infiltration to land use modification, while also highlighting the influence of the type of forest cover present.
  • 2012
  • Changes in physico-chemical, microbial and enzymatic activities during restoration of degraded sodic land : Ecological suitability of mixed forest over monoculture plantation
  • Biogeochemistry ; Ecological restoration ; India ; Land use ; Mixed forest ; Reforestation ; Saline soil ; Soil ; Soil properties ; UttarPradesh
  • Aprovechamiento del suelo ; Biogeoquímica ; India ; Propiedades del suelo ; Repoblacíon forestal ; Suelo ; Suelo salino ; Uttar Pradesh
  • plantations as well as mixed forest. Increase in water holding capacity (WHC), organic carbon, soil nutrients, microbial biomass (MB), microbial counts, CO2 flux and enzymatic activities showed significant improvement in the soil quality of rehabilitated sites
  • 2012
  • Algeria ; Cartography ; Forest ; Forest fire ; Interannual variability ; Risk ; Risk management ; Spatial variation
  • Algería ; Bosque ; Cartografía ; Gestión del riesgo ; Incendio forestal ; Riesgo ; Variabilidad interanual ; Variación espacial
  • 2012
  • The paper develops a spatial rural economy model of adaptation to rural change that accounts for a multitude of rural enterprises across a diversity of ecosystems in South America using household surveys. Adoptions of crops, livestock, forests
  • and both specialized and diversified enterprises are modeled. Livestock, forests, and a diversification into crops, livestock, and forests are key adaptation strategies. Adaptation behaviours are closely tied with ecosystem changes under global warming.
  • 2012
  • What determines forest litter decomposition ? Global trends and local variance
  • Biogeochemistry ; Forest ; Geochemistry ; Litter ; Model ; Plant species ; Soil ; Soil properties ; Temperate zone ; Tropical zone
  • determinants of litter decomposition rate. There is a failure of existing models to predict properly litter decay rate in many cases. These include especially ecosystems from outside the temperate climate, such as boreal and wet tropical forests. The existing
  • 2012
  • Determination of most appropriate distance between water diversions on skid trails in the mountainous forest, north of Iran
  • Agroforestry ; Applied hydrology ; Forest ; Gilan ; Iran ; Mountain ; Overland flow ; Slope gradient ; Soil erosion ; Water erosion ; Watershed
  • is recommended to decrease surface runoff and soil loss in forest operations.
  • 2012
  • Biodiversity ; Decision making process ; Environmental conservation ; Forest ; Forest policy ; Forest resources ; Malagasy Republic ; Management ; Territory
  • Biodiversidad ; Bosque ; Estrategia de actores ; Gestión ; Madagascar ; Política forestal ; Protección del medio ambiente ; Recursos forestales ; Territorio
  • 2012
  • Discourse analysis as an instrument to reveal the pivotal role of the media in local acceptance or rejection of a wildlife management project. A case study from the Bavarian Forest National Park
  • Les AA évaluent le projet de gestion de la population des cerfs initié par le Bavarian Forest National Park au travers de l’analyse de discours. Ils expliquent que la communication et la participation de tous les acteurs concernés est indispensable
  • 2012
  • [b4] Bavarian Forest National Park, Dept. of Research and Documentation, Grafenau, Allemagne
  • Community forest management on the agricultural frontier : charcoal makers, immigrant associations and land claims in Ankarafantsika, North-West Madagascar
  • Forest ; Forest resources ; Land ; Malagasy Republic ; Man-environment relations ; Management ; Migration ; Nature conservation ; Rural community ; Settlement history
  • 2012
  • The changes in land use, landscape structure and heterogeneity in Bela krajina were compared over a time interval of 220 years and linked to the socioeconomic factors. A significant increase of forested areas in the past 220 years is evident, which
  • has led to forestation of open pastures. The study shows that the present landscape structure is substantially different from those in past and reflects the current social and economic features. - (IKR)
  • 2012
  • Conflict ; Custom ; Deregulation ; Environmental management ; Forest ; Forest resources ; Land ; Land grabbing ; Malagasy Republic
  • 2012
  • Aggregate ; Arid area ; Carbon ; Cultivated land ; Forest ; Land use ; Murcia ; Precipitation ; Semi-arid area ; Soil erosion ; Soil properties ; Spain ; Water erosion
  • and on the type of particles mobilised by erosion under natural rainfall and under different land uses (non-disturbed forested area, and a non-irrigated olive cropland) at plot scale are presented. Labile (particulate organic carbon, POC) and stable (mineral
  • associated organic carbon, MOC) carbon pools were measured in soil and sediments. OC in soil aggregates explained the effect of rainfall on carbon mobilisation. The results showed that OC enrichment ratios were higher in olive than in forest in events of low
  • intensity and that the total eroded OC was higher in olive than in forest in events of high intensity.
  • 2012
  • Impact of forest fires on geomorphic processes in the Tyrolean Limestone Alps
  • Alps (The) ; Austria ; Erosion rate ; Forest fire ; Impact ; Model ; Mountain ; Slope dynamics ; Soil erosion ; Tirol
  • Alpes ; Austria ; Dinámica de vertiente ; Erosión de los suelos ; Impacto ; Incendio forestal ; Modelo ; Montaña ; Tirol ; Velocidad de erosión
  • 2012
  • Biogeochemistry ; Carbon ; Carbon sequestration ; Forest ; Geochemistry ; Litter ; Model ; Organic materials ; Pine
  • scale to predict carbon sequestration rates in pine forests.
  • 2012
  • [b1] Dept. of Forest Sciences, Univ., Helsinki, Finlande
  • Forest vegetation in the southeastern United States extends westward beyond the Ozark and Ouachita plateaus in Arkansas and Missouri into the Central Plains. Along this transect, the transition from luxuriant forests to mixed forests and grasslands
  • 2012
  • Biodiversity ; Ecosystem ; Forest ; Geographical information system ; Human impact ; New York State ; Regression analysis ; Remote sensing ; Resource management ; Spatial variation ; Temperate zone ; Tree species ; United States of America
  • Acción antrópica ; Análisis de regresión ; Biodiversidad ; Bosque ; Ecosistema ; Especie forestal ; Estado de Nueva York ; Estados Unidos ; Gestión de los recursos ; Sistema de información geográfica ; Teledetección ; Variación espacial ; Zona
  • The AA. relate a regional survey of foliar N data from a diverse set of forest tree species in the Adirondack Park, New York, to a holistic matrix of environmental gradients thought to control spatial variability of foliar N. Stepwise multiple
  • 2012
  • This paper assesses the influence of riparian vegetation cover type on diffuse lateral sediment connectivity on valley floors and investigates biogeomorphic processes acting in forested riparian zones of a medium-sized agricultural catchment
  • by the respective type of riparian vegetation cover. Forested riparian zones significantly reduce sediment inputs and act as strong disconnectors between the catchment area and the river channel. Topographical features called root dams emerge from biogeomorphic
  • processes in forested riparian zones and act as buffers that limit the connectivity between landscape compartments.
  • 2012
  • Land-cover changes during the past 50 years in the semi-arid tropical forest region of northern Peru
  • Agricultural land use ; Altitude ; Deforestation ; Forest ; Northern Peru ; Peru ; Plant cover ; Semi-arid area ; Space time ; Vegetation dynamics
  • 2012
  • Chile ; Data processing ; Forest ; Forest fire ; Mountain ; Remote sensing ; Vegetation index
  • Bosque ; Chile ; Incendio forestal ; Montaña ; Teledetección ; Tratamiento de datos ; Índice de vegetación
  • 2012
  • Estimación de la biomasa residual procedente de la gestión forrestal en Bizkaia
  • Basque Country ; Biomass ; Cartography ; Energy ; Energy potential ; Forest ; Forestry ; Geographical information system ; Spain ; Spatial analysis ; Spatial distribution
  • 2012