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An evergreen forest is a forest made up of evergreen trees. They occur across a wide range of climatic zones, and include trees such as conifers and holly in cold climates, eucalyptus , live oak , acacias , magnolia , and banksia in more temperate zones, and rainforest trees in tropical zones.
Tropical seasonal forests, also known as moist deciduous, monsoon or semi-evergreen (mixed) seasonal forests, have a monsoon or wet savannah climates (as in the Köppen climate classification): receiving high overall rainfall with a warm summer wet season and (often) a cooler winter dry season. Some trees in these forests drop some or all of ...
Indian Forest cover map as of 2015. Tropical evergreen forests of India are found in the Andaman and Nicobar Islands, [a] the Western Ghats, [b] which fringe the Arabian Sea, the coastline of peninsular India, and the greater Assam region in the north-east. [c] Small remnants of semi-evergreen forest are found in Odisha state.
The shrub layer is the stratum of vegetation within a habitat with heights of about 1.5 to 5 metres. This layer consists mostly of young trees and bushes, and it may be divided into the first and second shrub layers (low and high bushes). The shrub layer needs sun and little moisture, unlike the moss layer which requires a lot of water.
The canopy of a forest in Sabah, Malaysia Canopy of tropical evergreen forest, Andaman Islands Canopy layers of primary tropical forest, Thailand Macrocystis pyrifera – giant kelp – forming the canopy of a kelp forest Bamboo canopy in the Western Ghats of India Urban canopy of Atlanta, Georgia
A tropical rainforest typically has a number of layers, each with different plants and animals adapted for life in that particular area. Examples include the emergent, canopy, understory and forest floor layers. [19] [20]
Amazon River rain forest in Peru. Tropical rainforests are hot and wet. Mean monthly temperatures exceed 18 °C (64 °F) during all months of the year. [4] Average annual rainfall is no less than 1,680 mm (66 in) and can exceed 10 m (390 in) although it typically lies between 1,750 mm (69 in) and 3,000 mm (120 in). [5]
Some tropical areas may receive abundant rain the whole year round, but others have long dry seasons which last several months and may vary in length and intensity with geographic location. These seasonal droughts have a great impact on the vegetation, such as in the Madagascar spiny forests. [1] Rainforest vegetation is categorized by five layers.