Natural resources are those gift which are directly from nature. India presents nature in all its splendour. Diversity in physical and climatic condition result in wide range of natural vegetation in different region. In their turn these provide habitat for different species of animals and birds, while rain forests are found in the Andaman, Cactus are found in the Thar desert. Similarly there are alpine forests in the Himalayas while mangroves are grown in the saline soil of Andamans. Since the beginning of our civilisation the varied natural features with its flora and fauna have influenced the life and tradition of world and enriched their natural resources. It is always believed in the interrelationship among nature, environment and people. Therefore, the efforts for conservation of biodiversity and natural resources should be in tune with the processes and its occurrence in space and time from micro level to mega level. The present book is based on numerous materials, reports, and authors own extensive surveys and researchers of the nation. The book will be welcomed by all taxomists, foresters, environmentalists and other decision makers.