tree layer


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tree layer

n
(Environmental Science) See layer2
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The habitat has a tree layer composed of four species, and dominated by Cypress Cupressus sp with 91.
This contract is for the supply and planting of shrubs and herbaceous strata, planting the tree layer, the development of green-spaces, maintenance of green spaces, and management of topsoil platform.
Ideally, you should aim for the tree layer providing about fifty percent coverage.
However, response of the herbaceous layer to disturbance is more difficult to predict than tree layer response.
Plot size of 10x10m was used for tree layer, 4x4m for woody undergrowth up to 3m in height and 1x1m for herb layer (Schemnitz, 1980).
The aquatic layer was comprised of submerged or floating plants; the ground layer was restricted to bryophytes; the herbaceous stratum was characterized as vegetation less than 1 m in height; the shrub layer was characterized as vegetation with diameter at breast height (DBH) [less than or equal to] 4 cm; the tree layer was characterized as vegetation with living stems > 4 cm DBH.
Of course, in alternative conditions of the tree layer (clearings, young and open stand), the study of the influence of soil properties on plant cover and vice versa is complicated.
In terms of the tree layer (DBH [greater than or equal to] 10cm), the tropical seasonal forests in Xishuangbanna share several similar ecological characteristics, including forest profiles, physiognomic characteristics, species richness, density of stems for individual tree species and diameter sizeclasses with equatorial lowland rain forests (Zhu 1997).
The successful establishment of the tree layer on the semicoke dumps reduces significantly dust emissions (Kaar, 2003).
They defined the tree layer as those trees with a diameter at breast height (dbh) of greater than 9.
The most prosperous in the naturally recovered stands are silver birch (Betula pendula Roth) in tree layer and different willow species (Salix sp.