Abstract:

In order to achieve the destination that both quality and quantity of the prime farmland are important in the demarcation of prime farmland. Taking accounting productivity of cultivated land, the prime farmland demarcating was researched, in case of Anxian County with the spatial analysis function of ARCGIS10.0 taken, this paper selected the theoretical productivity, the realistic productivity, the practical productivity, the potentiality realistic productivity, landscape indices, the possibility of occupying the farming for construction to establish a demarcation method for prime farmland with the principle of grading according to quality based on accounting productivity of cultivated land. The consolidation potential of Rural Residential Land was obtained, which was the most foundation of schedule partitioning. The results showed that: the first demarcated area which evaluation scores above 90 points were located in Xiushui, Tashui, Huagai and Lexing with the area about 9644.19 hm2, the second demarcated area which evaluation scores above 60 points and below 90 points were located in Lexing, Qingquan, Xingren, Yonghe, Xiushui, Huangtu and Huagai with the area about 19926.98 hm2, the last demarcated area which evaluation scores below 60 points were located in Feishui, Jiepai, Jushui, Sangzao and Xiaoba with the area about 6508.83 hm2. The farmlands with evaluation scores above 62.35 points were the ideal prime farmland protection areas which was 28864.00 hm2, which could make protection ratio of prime farmland meet the national requirement indicators. The empirical research shows that the method can reduce disturbances of human factors in the demarcation of prime farmland and make the demarcation of prime farmland more scientific and reasonable.