THE QUANTITY AND QUALITY ANALYSIS ON DYNAMIC EQUILIBRIUM OF THE TOTAL CULTIVATED LAND IN CHINA

Cultivated land plays an important role both in the agricultural development and in economic development of China. In order to solve the increasing problems of cultivated land resource shortage and food security in China, a land management policy of dynamic equilibrium of total cultivated land has been implemented since 1996. However, the fierce trend of cultivated land resources' turning into non-agricultural land is still out of effective control. Based on the new perspective of dynamic equilibrium of total cultivated land and the land resources change tendency in China, standard coefficients reflecting the overall output ability of cultivated land and the corresponding standard cultivated land area have been proposed. Furthermore, the spatial-temporal differences between statistic area and standard area of the cultivated land in China are analyzed. And general quantity dynamic equilibrium of cultivated land in China is explored from two aspects of quality and quantity. Accordingly, countermeasures for achieving the general quantity dynamic equilibrium of Chinese cultivated land have been put forward.