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The Multispectral Canopy Reflectance Model (MCRM) by Kuusk (1995) has been used to simulate the reflectance of a sugarbeet canopy. The simulated reflectance values show high absorptance in the VIS area, compared to field measurements, and high reflectance values in the NIR area …
utvärdering av en 'mixing-layer' hypotes
A new theory for predicting the windprofile over a canopy has been evaluated. The theory was first presented by Harman and Finnigan (2007). The theory relies on the forming of a mixing-layer above the canopy, due to different mean wind in and above the canopy. Characteristics …
ett gestalningsförslag
… a mixture of mostly aspen and birch. The forest will be bright with a lighter canopy. In this part of the area, the ground level is at its highest and an artificial spring will start the small stream that creeps down towards the lake. The third zone will be the most mixed one …
… More suited are the medium or low altitude species which grow shaded in the canopy. Native to tropical habitats, Vireya is tender and need protection from frost but also from over heated green houses. Minimum temperatures should be around 8 °C in winter and not over 28 °C in …
en metodstudie
… important, but also to quantify the degree of fire damage to the tree canopy. Such data are important for assessing the conservation value, and to support planning and management of the burned area in the future. I have examined how to estimate the status of tree crowns after …
användning av vedartade marktäckare i anläggning
… effectively by competing for nourishment and water, but above all, by the canopy of the ground covers that prevent the weeds from getting enough light. In that way the woody groundcovers can effectively compete with the annual weeds. However, to get rid of the perennial weeds …
… between 5 - 15 m compared to the habitat class young forest. Visibility and canopy cover were estimated for selected and random bed-sites for fawns marked in 2009, and as expected the selected bed-sites showed significantly lower visibility and higher amount of canopy cover than …
… subsequent sampling occasions as well as through spatial distribution in the canopy. Needle samples were taken on two different levels and four different directions within the crown of each tree, at three subsequent sampling occasions after stem injection on August 25, 2009 …
… diameter and crown diameter and its LAIIndirect measurements with the LAI-2000 canopy analyzer (LiCor Inc, Lincoln, Nebraska) were made at 9 different plots, which have been earlier established for measurements of sapflow within the ”Tree, carbon and water project”. Each of the …
… Habitat specialists associated with older forests are first affected. When the canopy closes again after a clear-cutting species that prefer open habitats reduces and those who prefer mature/closed forests increase. In this study we compare differences in diversity and community …
… as a continuum. The objectives of this study were to investigate how different canopy cover affected tree species traits for 34 tree species in an enrichment planted tropical secondary rain forest, and if tree species growth response to increased light after a shade adjustment …
early effects of canopy properties on light conditions at the forest floor
Tropisk regnskog i Sydostasien är ett av de områden som hyser störst biodiversitet i världen, av vilken stora ytor är hotat. Ön Borneo drabbades av en katastrof åren 1982-1983 efter att väderfenomenet El Niño orsakat torka med vidsträckta skogsbränder som följd. Detta lämnade …
… in the control, which probably depend on the fact that the stand had a high canopy closure with large litterfall and low level of light to the ground. Intensive fertilization in older pine stands seems thus to bring negative consequences for the reindeer and the reindeer …
… uppskattas med hjälp av registrerad data från instrumentet LAI-2000 Plant Canopy Analyzer. LAI-2000 registrerar förhållandet mellan den strålningsmängd som når toppen av vegetationstäcket och den strålning som transmitteras ner genom bladverket. Definitionen av bladyteindex är …
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… and studied in the Öresund region focusing on their vegetation structure and canopy stratification. Crown height and tree height together with crown projections where the main parameters used to evaluate the structure of the stands. The data was analyzed using a wide range of …
