How can only a sub-continent of Asia hold such diversification? Semi-deserts and Deserts vegetations This area receives a rainfall less than 50 cm. Owing to such geographical diversification, India is an eye-candy for nature lovers and cultural enthusiasts as well. The tropical evergreen forests, 2. Formas de vida, espectro biológico de Raunkiaer e fisionomia da vegetação. While they grow slowly in winter. Another variety of natural vegetation in India can be found in the tropical deciduous forests.
Region is warm and wet throughout the year. Near rivers density of trees increase and are of deciduous variety. The virgin vegetation, which are purely Indian are known as endemic or indigenous species but those which have come from outside India are termed as exotic plants. Kluwer Academic, Dordrecht, pp 67—80,. Infertile sites also tend to support evergreen trees. The natural vegetation consists of Sabai grass, elephant grass, coarse grass, palash, berries, Shirish, etc. Though these forests occur in climates that are warm year-round, and may receive several hundred centimeters of rain per year, they deal with long dry seasons … which last several months and vary with geographic location.
There is, however, no common time for leaf shedding. . Much of the plant cover- is in a degraded state—. The coniferous forests cover the southern slopes of Himalayas and parts of northeast India. The trees have a multi-storeyed structure with good canopy. Seth 1955 recognized 13 types of grasslands in Uttar Pradesh including Uttaranchal on the basis of moisture relations of soils and dominant species Table 11. The lowest level, or association, is thus the most precisely defined, and incorporates the names of the dominant one to three usually two species of a type.
These forests are also called monsoon forests. Much of the work on vegetation classification comes from European and North American ecologists, and they have fundamentally different approaches. They are common in regions with rainfall between 200 and 300 cm. At elevations higher than 800 metres, the rainfall is heavy, the soil is dark in colour and rich in humus, and the vegetation consists of grasses which grow forming tufts at lower attitude and a turf at higher altitude. Alpine Types: a Alpine 1. Thorn Forests: These are found in the dry regions where the rainfall is scanty.
The dry deciduous forests have a more open and dwarfish composition—the trees being more stunted and widely spaced. Ojha, Scientific Publishers, 2004, vii, 326 p,. The other notable trees of these forests are hogla, garan, gewa, golpata, gilepata, pasur etc. Many fungi have been recorded from these regions and from the country in general comprising thermophiles, psychrophiles, mesophiles, aquatic forms, marine forms, plant and animal pathogens, edible fungi and beneficial fungi and so on. The individualistic concept of the plant association. Apart from a handful of , such as , , , , and both and , has a wide variety of animals native to the country. These plants grow far apart from each other.
Forests consist of evergreen trees and deciduous trees. The natural vegetation of India changes from one region to another due to the variations in the climate and soils. In Madhya Pradesh grasslands have been studied by Tiwari, S. Some of the commercially functional trees of these forests comprise ebony, mahogany and rosewood. Many Indian species are descendants of originating in , of which India originally was a part. In the tropical zone, the grassland is common enough as a secondary seral stage and may be stable pre-climax under the influence of fire and grazing.
There are different types of climate which grow the plants on a full range of the natural plant. In 1970, a national ban on was imposed, and in 1972 the came into force. The Role of Terrestrial Vegetation in the Global Carbon Cycle: Measurement by Remote Sensing, J. It is broader than the term which refers to species composition. The trees have thick bark and their wood is generally used as fuel. The , shown on the seals of , shaded as he sought enlightenment.
The primary uses of these trees are as firewood or fuel wood, furniture, etc. There may be associated patches of canes, palms, bamboos, ferns and lianas which are found along breaks in the vegetation, for instance, along stream banks. These are as follows: i Grassy Plains: These are with short grasses. The average annual rainfall is less than 25 cm, and temperatures are very high. National Tiger Conservation Authority, Govt. Because trees lose moisture though their leaves, the shedding of leaves allows trees such as teak and mountain ebony to conserve water during dry periods. Important trees found in these forests are mahogany, ebony and rosewood.
The trees in these forests never shed their leaves all at a time in any part of the year. South India- This region has tropical type of climate. They are also found in hills of Jaintia and Khasi. How well do you know about the diverse natural? The average annual relative humidity should be 60 to 75 per cent. The Andaman and Nicobar Islands and the state of Arunachal Pradesh are some of the other regions with well preserved rain forests in India. Finally, the word forest is used, often loosely, by administrators and the general public to denote a large tract covered by trees and shrubs. Dry Tropical Types : Tropical Dry Evergreen Forests This vegetation type is confined to coastal Tamil Nadu, an area which receives about 100 cm of rainfall annually mainly from retreating monsoons, between October and December.