It could select the standard farmland to take the control standard when complementary cultivated land quantity,quality according to the rank conversion in the area for cultivated land balance.

After a discussion on the standard plot method for the rating conversion in requisition-compensation balance of arable land,this paper,taking the city of Nanyang as an example,analyzes and demonstrates with the production index method the requisition-compensation class equivalence coefficient of arable land in terms of agric.

Ecological environment evaluation of cultivated land in coastal intensive agricultural areas by GIS;

To enhance the productive capacity of cultivated land and secure grain safety;

Evaluation on heavy metal pollution of cropland in Zhangzhou;

Study on spatial variation of cropland value in Fujian based on GIS;

Dynamic changes of cropland based on fractal theory and its driving forces in arid oasis;

Spatial Variability of the Farmland Organic Matters and Macroelements in Linyi County;

Brief Discusson on the Contradiction between Farmland and Woodland in Guanghan City;

Analysis on Farmland Dynamic Change and Drive Force in Qinghai Lake Basin;