Estimation of New Cultivated Land and Calculation of Effective Cultivated Land Area in Land Consolidation Program

Purpose Our aim was to discuss the criteria for evaluating the new cultivated land and the effective cultivated land, so as to provide the theoretical basis for the introduction of the new technical evaluation of the cultivated land survey, based on the analysis of the present situation and existing problems of the newly increased cultivated land in the existing land remediation project.

Method Literature research, GM (1,1) model and remote sensing survey according to the sampling frames were studied.

Results We proposed a new cultivated land recognition criterion and a newly increased effective farmland concept. The calculation criterion is helpful for evaluating the newly increased cultivated land and the effective cultivated land. Based on the new effective cultivated land, the area of small area in the project area accounts for 1.3% of the cultivated land area, the new effective cultivated land area is 13.31 hm², and the new cultivated land rate is 8.27%.

Conclusion The concept of newly increased effective land more meets the requirements of effective arable land and the new cultivated land recognition standards in the land remediation in study area. The GM (1,1) model not only eliminates the disturbance of the small area to the cultivated land, but also makes the newly increased effective cultivated land area of the land improvement project more accurate.