| According the corrected data of cultivated land in 1978-2012 and the economic-social factors associated with cultivated land protection, this paper established a multiply linear regression model about the change of cultivated land data. Based on analyzing the development process and the existing system of cultivated land protection policies, the performance of cultivated land protection policies for 35 years was analyzed by the model, to provide a reference for completing cultivated land protection policies in China. The results showed that the performance of cultivated land
protection policies was significant, and the policies contained the area 250.96伊104 hm2 and distribution rate 17.35% of
cultivated land reduction. The performance of cultivated land protection policies had significant time difference, the
distribution rate of the policies to contain cultivated land reduction was significantly different in different stages. However,the distribution rate of the policies was gradually rising in the four stages of the development process for cultivated land protection policies. It indicated that cultivated land protection policies were in constant development, and the performance of which played gradually. In 2003-2012, the reduction of cultivated land fell to the lowest point and stabilized gradually.While the distribution rate of the policies achieved a peak. In the future, the work of cultivated land protection needs to highlight two emphases including quality and ecological construction. |
