Fast population growth and global environmental transformation is two subjects that have received considerable public thought over the past several decades. Population boost become a global public policy issue during the mind twentieth century as mortality declines in many developing nations were not matched with reductions in fertility resulting in unprecedented growth rates.
Since Population size is naturally linked to the environment as a result of individual resource needs as well as individual contributions to pollution. As a result, population increase yields heightened demands on air, water, and land environments, because they offer essential assets and act as sinks for environmental pollutants.
Concern with environmental change has come to forefront primarily since 1970, with discernible levels of environmental degradation fuelling public concern with the scope of contemporary environmental transformations and the advent of satellite imagery aiding environmental research (Colombo B. et all 1996).
At the present date are estimated roughly 6.5
billion people in the world and the figure continues to multiply. In contrast there are a restricted number of natural resources. On the worldwide root the human population has revealed a J shaped pattern (fig 1 and 2) of escalation over the past years, while the availability of natural funds are mandatory for human survival is in slow decline (Cohen J.E.1995).
Fig 1 Human population growth till 2000 (2)
Population policies which gears to reduce future growth represent logical responses to the environmental implications of population size (Stern et all 1995) although fertility diminution cannot be seen as sufficient response to contemporary human induced environmental change. A decrease in human numbers does not necessarily suggest a decrease in environmentally significant behaviours.
In addition, supposition that each further individual has an equal impact on resources is too simplistic. Factors related to both the individual and to the social and environmental...