Thursday, February 18, 2010

Need for natural resources management

Environment quality is often seen a luxury goods something only wealthy can afford.But environment is largely a necessity for people for developing countries.These people are much These are much dependent on natural resources that 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 foods,filter pollutants,assimilate waste,pollinate crops,maintain a genetic library,preserve and regenerate soil,operate the hydrologicalNeed for natural resources management cycle,and maintain the gaseous composition of the atmosphere.The world's ecosystem represents a large part of natural capital base,which may also be called environment resource base.The services are essential for our survival.Hence ,the environmental resources based should be monitored in much the same way that we monitor the manufactured capital stocks,such as roads,building,and machinery.
Degradation of the environmental resources base is caused by excessive resources extraction,intensive land use,and so on.This degradation not only affects the quantity and quality of the services produced by ecosystem,it also challenges their resilience."An ecosystem resilience is its capacity to absorb disturbance without undergoing fundamental changes".If a system loses its resilience,even a small perturbation can change into a wholly new state.Thus,the economist,assumption that there are limitless substation possibilities among resources is country to ecological truth.
"An ecosystem's carrying capacity is the maximum stress that it can absorb without changing to a vastly different state".Ecosystems are subject to natural shocks like fires,floods,storms,and so on.Thus,ecosystem is not a fixed stock of capital and cannot provide humans with a steady flow of resources.Biological diversity,or biodiversity,plays two central roles in the evaluation of ecosystems.First,it provide the units through which energy an dematerialise flow,giving the system with resilience.The environmental resources that in regenerative,i.e.,renewable,are in danger of exhaustion from excessive use.Such renewable natural resources are earth's atmosphere ;animal,bird,plant,and fish population,Land and even underground water basins etc.These resources degrade due to pollution and wrong and excessive use.Environmental resources such as forests,the atmosphere,and seas have multiple competing uses.This accentuates management problem.

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