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Wind throw is the toppling of a tree due to the force of the wind, this exposes the root plate and adjacent soil beneath the tree and influences slope stability. Wind throw is a factor when considering one tree on a slope; however, it is of lesser importance when considering general slope stability for a body of trees as the wind forces involved represent a smaller percentage of the potential ...
The vertical stratification of a community is determined largely by the life forms of plants their size , branching and leaves which is influenced by the vertical gradient of light. Vertical classification of vegetation in a forest showing the tree, shrub and herb layers and the forest floor.
As far as plants and vegetation are concerned, the accumulation of salts in the soil adversely affects their physiology and morphology by increasing the osmotic pressure of the soil solution, altering the plant’s mineral nutrition, and accumulating specific ions to toxic concentrations in the plants.
Gravitropism is an integral part of plant growth, orienting its position to maximize contact with sunlight, as well as ensuring that the roots are growing in the correct direction. Growth due to gravitropism is mediated by changes in concentration of the plant hormone auxin within plant cells.
[2] [7] For mountains located in deserts, extreme high temperatures also limit the ability of large deciduous or coniferous trees to grow near the base of mountains. [8] In addition, plants can be especially sensitive to soil temperatures and can have specific elevation ranges that support healthy growth. [9]
The growth of trees is another source of disturbance, creating a micro-scale heterogeneity which is still visible in soil horizons once trees have died. [190] By passing from a horizon to another, from the top to the bottom of the soil profile, one goes back in time, with past events registered in soil horizons like in sediment layers.
Green wall the Simon Fraser University, Burnaby, British Columbia, Canada.. A green wall is a vertical built structure intentionally covered by vegetation. [1] Green walls include a vertically applied growth medium such as soil, substitute substrate, or hydroculture felt; as well as an integrated hydration and fertigation delivery system.
A geophyte (earth+plant) is a plant with an underground storage organ including true bulbs, corms, tubers, tuberous roots, enlarged hypocotyls, and rhizomes. Most plants with underground stems are geophytes but not all plants that are geophytes have underground stems. Geophytes are often physiologically active even when they lack leaves.
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