India has a rich biological diversity . It is one of the twelve mega bio-diversity countries of the world. It has nearly 8% of the total number of species in the world. Total no. of plant species in India- 47000 Flowering plant species- 15000 This account for 6% in the world’s total no. of flowering plants. Non flowering plant species- 32000 India occupies 10th place in the world & 4th in Asia in plant diversity. Total no. of animal species- 81000
Natural vegetation refers to a plant community which has grown naturally without any human aid and has been left undisturbed by humans for a long time. Itis otherwise known as ‘Virgin vegetation’.
RELIEF LAND SOIL CLIMATE TEMPERATURE SUNLIGHT PRECIPITATION
ECONOMIC VALUE: Wood is a major forest product. Other minor products are oil, gums & resins, tans & dyes, paper & rayon, medicines from herbs & roots etc. ENVIRONMENTAL VALUE: Checks soil erosion Increases the level of water table. Revitalizing the atmosphere. Increase the fertility of the soil. Modify the temperature,controls wind force & causes rainfall. Natural habitat for plants & animals
International Union for Conservation of Nature & Natural Resources (IUCN) has classified the species into various categories as under: Extinct species Endangered species Vulnerable species Rare species Endemic species Normal species