Abstract

The survival of human beings and other diverse sort of animal species from times of historical past, has been possible because of continuous drawing of the resources of nature. Forests, water, air, diverse type of minerals together with the evolving of bio-geo-chemical cycles have continued to purvey the essential life support services for all the living objects in a web of periodic flux. Till the days of industrial revolution the interaction among human population, animal population and the resources of nature were not causing any great concern about the sustainability of life on this planet earth over the future years. For some time the relevance of Gaia hypothesis was in vogue and it was believed that the earth can be considered as a super ecosystem consisting of micro ecosystems like mountain ranges, forest ecosystem, rivers, wetland, etc.