With the rapid development of economy during the last 20 years,comprehensive economic power and people's living levels has been improved greatly in China.However,we are faced with the facts that the quantity and quality of cultivated land have been dropping,Movement of Enclosure can not be banned,the system of total cultivated land dynamic balance has not been really fulfilled,there are enough index of constructed land in developing regions and not enough index of constructed land in developed regions becau...
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