Taking Jinan City as the research area, based on the classification results of cultivated land resource quality in 2021, the improved grey target model and index scoring and summation method were used to convert the classification results of cultivated land resource quality in Jinan City into grade data.The results showed that the improved grey target model took into account the natural background characteristics and the grain productivity of cultivated land, and it was more objective and scientific in the process of empowerment and evaluation. The grade re-sult after conversion was more reasonable, the better cultivated land in Jinan was mainly located in the central and northern plain areas, as well as along the Yellow River. The land of grade 3 and grade 4, accounting for 77％ of the total cultivated land area,according with the actual situation of Jinan City.The grade converted by index scoring and summation method was reasonable on the whole,however, the subjective fac-tors were strong and the differences of evaluation results within the region were small. Therefore, the improved grey target model was more ap-plicable in the study of cultivated land quality classification and grade,the results of conversion could provide reference for the practical appli-cation of the balance of land occupation and supplement and the balance of import and export.
关键词
耕地资源质量分类/等别/成果转换/改进的灰靶模型/指标赋分求和法
Key words
Classification of cultivated land resource quality/Grade/Result conversion/Improved grey target model/Index scoring and summation method
万方数据