Saturday, September 12, 2009

Forest ecosystems

Forests are formed by a community of plants,which is predominatlystructurally defined by its trees,shrubs,climbers and ground cover .Natural vegestation looks and is vastly different from a group of planted trees in orderly rows.The most'natural'undisturbed forests are located mainly in our national parks and wildlife sanctuaries.The landscapes that make up various types of forests look very different from each other .Their distinctive appearence are fascinating aspects of nature.each forest type forms a habibat for a specific community of animals that are adapated to live in it.
The non-living or boiticaspects of the forest: The type of forest depends upon the abiotic conditions at the site.The forest on mountains and hills differ from those along river valleys .The vegetation is specific to the amount of rainfall and the local temperature ,which vary according to latitude and soil type.

The living or the biotic aspects of the forest:The plants and animals form communities that are specific to each forest type.For instance ,confierous trees occir in the Himalayas;mangrove trees occur in river deltas;thron trees grow arid areas.The snow leopard lives in himalyas while the leopard tiger live in the forests in the rest of India.wild sheep and goats live high up in the himlayas ,and many of the birds of the Himalayan forests are different from those in the rest of India.The evergreen forests of the westren Ghats and North-east India have the richest diersity of plant and animal species.

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