| 摘 要： | I. THE IMPORTANCE AND URGENCY OF NATURAL CONSERVATION Mankind is seeking economic development and utilizing natural resources, which must agree, with limited resources and support of ecosystem while give full consideration for later generations. This is the meaning of conservation. With development of society and technology, the increasing ability of creation and construction of mankind directs the same force of destruction and ravage. In recent decades, as a result of the expanding scale and
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