Cultivated land comprehensive quality evaluation based on agricultural land classification and soil environmental quality evaluation

To the aim of the ecological protection and management, the comprehensive quality evaluation method of cultivated land based on agricultural land classification and soil environmental quality evaluation was explored. Based on the classification index for the agricultural land classification, the concept for the compensation factor for the soil environmental quality evaluation was introduced. The cultivated land classification index was modified in terms of the above-mentioned results such that the comprehensive quality evaluation index could be obtained. Moreover, the method was illustrated by using the empirical study in Luoyang City, Henan Province. By comparing the cultivated land comprehensive quality evaluation with the previous agricultural land classification, it was found that the clean land classification left invariable, the pollution tendency land classification tended to decline, and the contaminated land classification reduced to the lowest grade. The evaluation method and results can be used for land utilization management and environmental pollution control programs.