Canopy (forest)

Canopy (forest)

The canopy is one of the uppermost levels of a forest, below the emergent layer, formed by the tree crowns. "Canopy trees" refers to the trees in a forest which form the canopy. The uneven layers of the canopy is formed by both dominant and co-dominant trees. Emergents - of which there are typically one or two per hectare - reach above the canopy.Fact|date=September 2008

The canopy of a rainforest is typically 10m thick, and intercepts around 95% of sunlight.Fact|date=September 2008 With an abundance of water and a near ideal temperature, light and minerals are the two restricting factors on a tree's growth. Plants grow rapidly to reach the canopy, but have no need to grow any taller after reaching the light.

The canopy is home to unique flora and fauna not found in other layers of a forest.

The term has also been adopted by the permaculture and forest gardening community, who use the distinction between canopy and secondary trees in their seven layer design system.Fact|date=September 2008

The canopy of an individual tree refers to the extent of the outer layer of a trees leaves. Shade trees normally have a dense canopy blocking out the light from lower growing plants. The Leaf Area Index can be used to measure the density of the canopy.

Canopy is also the name given to the upper layer of trees (mostly in tropical rainforests) which cover the forest's floor and protect it from strong winds and storms. Although the canopy protects the soil from winds and storms it also keeps sunlight from reaching it as well as a considerable amount of rain. As a consequence the rainforest floor has considerably less vegetation than the rest of the forest layers.

Trees in the canopy are able to photosynthesise very rapidly thanks to the large amount of light, so it supports the widest diversity of plant as well as animal life in most rainforests. Many rainforest animals have evolved to live solely in the canopy, and will never touch the ground.

ee also

*Canopy in rainforests
*Canopy gap
*Canopy research
*Canopy walkway
*The Layers of the Rainforest
*Understory (the layer below the canopy)
*Hemispherical photography

Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Canopy (biology) — Canopy of a forest In biology, the canopy is the aboveground portion of a plant community or crop, formed by plant crowns.[1][2][ …   Wikipedia

  • Canopy research — is the field of scientific research based upon data collected in the canopy of trees.Objects* Description of plant and animal species residing in the tree summits. Mainly ancient forests and tropical forests are studied. * Study of forest… …   Wikipedia

  • Forest dynamics — describes the underlying physical and biological forces that shape and change a forest. That is, the continuous state of change that alters the composition and structure of a forest. Two basic elements of forest dynamics are: forest succession… …   Wikipedia

  • Canopy walkway — Canopy walkways are bridges between and in the canopy of a forest; mostly linked up with platforms inside or around the trees. They were originally intended as access to the upper regions of ancient forests for scientist who conduct canopy… …   Wikipedia

  • Forest Park (Queens) — Forest Park is an urban forest, one of the natural treasures of the New York City borough of Queens. It has an area of 538 acres (2.15 km²). The park is operated and maintained by the New York City Department of Parks and Recreation.City of New… …   Wikipedia

  • Forest Hill, San Francisco, California — Forest Hill is an affluent neighborhood in San Francisco, California. It is located near the middle of the city, north east of West Portal, south of the Inner Sunset and north of Dewey Boulevard. Construction on the neighborhood began in 1912, on …   Wikipedia

  • canopy — [kan′ə pē] n. pl. canopies [ME canape < ML canapeum < L conopeum < Gr kōnōpeion, couch with mosquito curtains, dim. of kōnōps, gnat] 1. a drapery, awning, or other rooflike covering fastened above a bed, throne, etc., or held on poles… …   English World dictionary

  • canopy — ► NOUN (pl. canopies) 1) a cloth covering hung or held up over a throne or bed. 2) a roof like projection or shelter. 3) the expanding, umbrella like part of a parachute. 4) the uppermost branches of the trees in a forest, forming a roof like… …   English terms dictionary

  • Forest — This article is about a community of trees. For other uses, see Forest (disambiguation). A conifer forest in the Swiss Alps (National Park) …   Wikipedia

  • canopy — noun ADJECTIVE ▪ glass ▪ dense, thick ▪ a thick canopy of branches ▪ forest, jungle, leafy, tree …   Collocations dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”