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The crown of a woody plant (tree, shrub, liana) is the branches, leaves, and reproductive structures extending from the trunk or main stems. Shapes of crowns are highly variable. The major types for trees are the excurrent branching habit resulting in conoid shapes and decurrent (deliquescent) branching habit, resulting in round shapes.
Crown sprouting is the ability of a plant to regenerate its shoot system after destruction (usually by fire) by activating dormant vegetative structures to produce regrowth from the root crown (the junction between the root and shoot portions of a plant). [1] These dormant structures take the form of lignotubers or basal epicormic buds.
Firebush (Hamelia patens) can be found at most nurseries and garden centers across the South, partly because it's so well adapted to our growing conditions. It's drought tolerant but doesn't mind ...
A pineapple pit requires a huge amount of fresh manure, and manual labour to maintain the temperature of the central trench. [6] The introduction of steam ships meant that the pineapple pit became obsolete, as it was cheaper to transport fruit from overseas than to grow them under special conditions in the UK. In 2012 the cost of growing a ...
Pinus contorta is a fire-dependent species, requiring wildfires to maintain healthy populations of diverse ages. The thin bark of the lodgepole pine minimizes its defense to fire, although the heat of fire opens the cones to release the seeds. This allows the species to regenerate and maintain its place in the forest habitat. [20]
The understory is the underlying layer of vegetation in a forest or wooded area, especially the trees and shrubs growing between the forest canopy and the forest floor. Plants in the understory comprise an assortment of seedlings and saplings of canopy trees together with specialist understory shrubs and herbs.
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Crown cover is the proportion of a stand covered by the crowns of live trees. A forest stand can have a crown cover of 100% and a crown closure less than 100%. Typical stands with 100% cover but low closure are coffee agroforestry stands, where overlapping parasol-shaped crowns ensure complete cover but still allow light to penetrate at an ...