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ake provision for the welfare of their descendants. It is expected, therefore, that Homo sapiens will take the leading role in saving the earth for their future generations.
 
Earlier, environmental policies at the national as well as international level were based on the concept that nature has capacity to absorb the ill effects of pollution and environmental degradation to a certain extent but, once the shock bearing threshold is breached, the pollution and environmental degradation may cause damage to the environment calling for remedial efforts. This is known as the concept of ‘assimilative capacity’ of nature. This concept is based upon the notion that nature has self curative mechanism and needs no intervention unless the pollution and imbalance caused by human activities breaches the permissible level. If we adhere to this concept, the role of environmental protection agencies will begin only when this upper limit of damage bearing capacity of the environment is breached.
 
In the quest for developing, faster then fastest, many nations have ignored this threshold limit of the environment while harnessing their natural resources, building industries, big dams and townships without making provisions for adequate compensation for the erosion and damage caused to the environment. In such a scenario, one cannot depend solely upon the earth’s self purifying and self curative capacities.
 
Especially when, the earth is loaded with nuclear and toxic waste; forest cover is depleting faster than ever; global warming has started showing ill effects; the virgin peaks of Mount Everest and the uninhabited lands of North and South poles have become littered by man; water pollution in rivers and seas is destroying the life of aquatic creature; acid rain and smog has become more rampant, an effective proactive strategy coupled with effective measures to check further degradation of the environment is the cry of the day. Such strategy and measures assume greater importance in those cases where the adverse impact of any activity upon the environment cannot be ascertained and predicted with certainty.

Should precaution be taken anticipating harmful impact on environment and thereby halt the developmental activities or leave it to the nature to repair the damage using its limited assimilative capacity is the question to be answered. The precautionary principle guides us in such tricky situations. Since 1970s, the precautionary principle has become the underlined rationale for a number of international environmental treaties and declarations. It is evident that international community has shifted from the ‘principle of assimilative capacity’ to the ‘precautionary principle’ ratifying the old saying that precaution is better than cure.
 
原则的起源——Origin of the Principle
 
It is difficult to identify with certainty the origin of the principle. “The precautionary concept found its way into international law and policy as a result of German proposals made to the International North Sea Ministerial Conferences”. In Germany the precautionary principle had its beginnings in the principle of Vorsorge, or foresight. At the centre of early notions of this principle was the understanding that society should endeavour to avoid environmental damage by careful planning in advance, blocking the harmful activities having the pot本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。