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  • The role of leaf inclination, leaf orientation and plant canopy architecture in soil particle detachment by raindrops
  • Experimentation ; Plant canopy ; Rainfall simulation ; Soil erosion ; Splash ; Typology
  • The aim was to determine whether these morphological parameters are important predictors of soil detachment and should therefore be included in erosion models or whether, as is the case in many models, percentage canopy and canopy height alone
  • are adequate to represent the effects of vegetation. Since the role of canopy cover and canopy height is well recognized in erosion models, the experimental programme was designed within a relatively narrow range of values for these parameters so
  • Modeling land-surface albedos from vegetation canopy architecture
  • Canopy ; Climatology ; Deciduous forest ; Desert ; Forest ; Model ; Radiation ; United States ; Vegetation
  • A model of radiation transfer in plant canopies is used to predict vegetation albedos. The model is described and the results of simulations for three representative canopy types (tropical rainforest, Sonoran desert and mid-latitude deciduous forest
  • Atmospheric optical depth effects on angular anisotropy of plant canopy reflectance
  • Determine wether changes in atmospheric aerosol optical depth would effect changes in bi-directionnal reflectance distribution of vegetation canopies. The atmospheric optical depth must be considered for accurate remote sensing and in situ data
  • Shear stress partitioning in sparsely vegetated desert canopies
  • Aeolian features ; Arid area ; Arizona ; Experimentation ; Plant canopy ; Semi-arid area ; Soil erosion ; United States of America ; Wasteland ; Wind erosion ; Wind speed
  • used to evaluate the partitioning of shear velocities and shear stresses between the plant canopy and the surface. Results are discussed with the goal of assessing the protection provided by sparse vegetation against wind erosion.
  • Shear velocity ratios were derived for 6 neighbouring localities representing rangeland, abandoned farmland and a playa, in the semi-arid region of the Sonoran Desert. Near-surface and above-canopy wind speeds, mostly below saltation threshold, were
  • Classification and ecology of closed-canopy forest in Ghana
  • 7types de forêt dense ont été reconnus, nommés et cartographiés, à la suite d'une analyse multivariée faisant intervenir floristique (749 espèces de plantes vasculaires), structure, régénération, types biologiques, pluviométrie, sol, altitude
  • Vegetative and optical characteristics of four-row crop canopies
  • A partir des mesures de réflectance, détermine les coefficients d'absorption, de diffusion et la réflectance asymptotique sur les bandes 1, 2, 3, et 4 de TM, et montre l'influence des facteurs caractéristiques de la plante sur les différentes bandes
  • Microclimatic differences between and within canopy gaps in a temperate rainforest
  • Climate ; Forest ; Microclimate ; New Zealand ; Plant canopy ; Radiation ; Solar radiation ; Temperature
  • Radial growth responses of three co-occuring species to small canopy disturbances in a secondary hardwood forest on the Cumberland Plateau, Tennessee
  • Biogeography ; Dendroecology ; Dendrology ; Forest ; Plant species ; Tennessee ; United States of America ; Vegetation dynamics
  • The AA. analyzed the radial growth patterns of Liriodendron tulipifera, Acer rubrum, and Acer saccharum growing in 39 canopy gaps in a mature secondary hardwood forest on the Cumberland Plateau in Tennessee to compare species-specific growth
  • responses to small canopy disturbances. They tested for differences between mean radial growth increases during the year of release initiation (i.e., first year of discernible growth increase) over the year prior, mean percent growth increases during
  • the year of release initiation over the year prior, mean release durations, and mean lag times between canopy gap formation and radial growth response. These findings provide information on the successional pathway of the forest, the physiological responses
  • of these species to small canopy openings, and the applicability of these species to reconstruct canopy gap formation in secondary stands from tree-ring records.
  • Leaf area index retrieval based on canopy reflectance and vegetation index in eastern China
  • China ; Jiangsu ; LANDSAT ; Model ; Plant canopy ; Remote sensing ; Thematic Mapper ; Tropical zone ; Vegetation index
  • , dominated by bamboo, tea plant and greengage. The AA. discuss the sensitivity of parameters in the LAI retrieval model, and retrieve a suitable LAI model for the sub-tropical vegetation based on Landsat TM data, and validate the model with ground-based LAI
  • 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.
  • Mound development as an interaction of individual plants with soil, water erosion and sedimentation processes on slopes
  • Arid area ; Ecosystem ; Mediterranean area ; Microrelief ; Plant species ; Slope ; Slope dynamics ; Slope gradient ; Soil erosion ; Spain ; Splash ; Valencia ; Water erosion
  • In this study, the influence of 3 representative species of the Mediterranean matorral on slope microtopography is determined and the processes that take part in the development of microtopographic structures beneath the plant canopy are identified
  • . The influence of slope gradient, plant species and plant parameters on the shape and height of microtopographic studies is also studied. Main processes were identified as affecting mound development in the studied field site : sedimentation, differential
  • interrill erosion, differential splash erosion and bioturbation. Plant species interact in different ways with these processes.
  • Agroforestry ; Biomass ; Brazil ; Forest ; Microclimate ; Moisture ; Pará ; Plant canopy ; Radiation
  • . This study focuses not only on the distribution of solar radiation, which varies with canopy coverage and microclimatic parameters among sites, but also on the growth of trees covering pimenta.
  • Transfert hydrique dans le végétal. III. Simulation de l'influence des paramètres du couvert sur l'évolution diurne du potentiel hydrique foliaire. (Water transfer in plants. III. Simulation of the influence of the canopy's parameters on the diurnal
  • Absorption racinaire ; Auto-écologie ; Cycle de l'eau ; Ecologie ; Ecologie végétale ; Ecosystème ; Evapotranspiration ; Flux ; Géographie physique ; Modèle ; Méthodologie ; Potentiel hydrique foliaire ; Teneur en eau de la plante ; Transfert
  • Extension of a uniform canopy reflectance model to include row effects
  • Biomasse ; Effet de rang ; Généralités sur la géographie ; Image satellite ; Landsat ; Modèle ; Plante cultivée ; Prévision ; Récolte ; Réflectance ; Télédétection ; Végétation
  • réflectance des plants par modulation de la densité de végétation à travers les rangs suit une procédure parallèle à celle d'une couverture uniforme. Les prévisions utilisant le modèle en rang pour le blé montrent que les effets de rang sont plus importants
  • dans le canal MSS 5 et peuvent entraîner une sous-estimation de la biomasse des plants.
  • Cycle de l'eau ; Détermination au champ ; Ecologie ; Ecologie végétale ; Ecosystème ; Géographie physique ; Luzern ; Méthodologie ; Plante cultivée ; Teneur en eau de la plante ; Transfert hydrique ; Végétation
  • A previously presented model for water circulation within plants suggested a method for determining, from transpiration and water potential measurements, the amounts of water lost and recovered during the course of the day by the plant canopy
  • here include the root system contribution| for the lucerne canopy studied, this contribution corresponds to two third of the water lost by the plant. And in conclusion, the possibilities of increasing accuracy while simultaneously simplifying
  • . Applied to a lucerne canopy over a period of about twenty days, this method led to a set of plausible results which thus seem to confirm the model's validity. As opposed to the case of other methods which apply only to the aerial parts, the data obtained
  • Africa ; Central Africa ; Central African Republic ; Congo ; Cultivated plants ; Forest ; Phytogeography ; Plant canopy ; Remote sensing ; Savanna ; Vegetation map
  • Afrique ; Afrique centrale ; Carte de la végétation ; Centrafricaine, république ; Congo ; Couvert végétal ; Forêt ; Phytogéographie ; Plante cultivée ; Savane ; Télédétection
  • Utilisation de la fluorescence des plantes en télédétection
  • Biogeography ; Photosynthesis ; Plant canopy ; Remote sensing ; Research technique ; Vegetation
  • Using LIDAR data to map gullies and headwater streams under forest canopy : South Carolina, USA
  • Cartography ; Digital elevation model ; Geomorphology ; Gully erosion ; Plant canopy ; Soil erosion ; South Carolina ; Topography ; United States of America
  • Regional soil erosion assessment from remote sensing data in rehabilitated high density canopy forests of southern China
  • Afforestation ; China ; Erosion control ; Forest ; Fujian ; Methodology ; Plant canopy ; Remote sensing ; Soil erosion ; Southern China ; Vegetation index
  • A mapping method was developed by integrating remote sensing parameters to identify eroded areas under high density canopy in the Changting County, Fujian Province. The remotely sensed vegetation indices, vegetation fractional canopy (VFC) and leaf
  • Vegetation canopy and radiation controls on permafrost plateau evolution within the discontinuous permafrost zone, Northwest Territories, Canada
  • Aerial photography ; Canada ; Climatic change ; LiDAR ; Northwest Territories ; Periglacial features ; Permafrost ; Plant canopy ; Plateau ; Radiation ; Remote sensing ; Satellite imagery ; Spatial variation ; Vegetation
  • show that vegetation is prone to reduced canopy fractional cover and reduced canopy heights at the edges of plateaus. Increased incident shortwave radiation may result in augmented thawing of permafrost and increased meltwater runoff, which further