Need for natural resources management

Environmental quality is often seen as luxury goods something only the wealthy can afford.But environment is largely a necessity for people in developing countries.These people are much dependent on natural resources then people in industrial countries.Many ecosystem functions and services are indispensable.Ecosystems provide water,animal and plant food,and other renewable resources.They also recycle nutrients,control floods,filter pollutants,assimilate waste,pollinate crops,maintain a generic library,preserve and regenerate soil,operate the hydrological cycle,and maintain the gaseous composition of the atmosphere.The world's ecosystem represent a large part of natural capital base,which may also be called environmental resources base.These services are essential for our survival.Hence,the environment resources based should be monitored in much the same way that we monitor the manufactured capital stocks,such as road,building,and machinery.
Degradation of the environmental resources base is caused by excessive resource extraction,intensive land use,and so on.This degradation not only affects the quantity and quality of the service produced by Eco-system,it also challenges their resilience."An ecosystem resilience is its capacity to absorb disturbance without undergoing fundamental changes".It into a wholly new state. Thus,the economist,assumption that are limitless substitution possibilities among resources is country to ecological truths.