长江中下游平原区耕地质量定级方法应用比较研究——基于扬州市江都区的实证

Comparative study on the Application of cultivated Land quality grading methods in the Plain area of the Middle and Lower reaches of the Yangtze River——Based on the empirical study of Jiangdu district,Yangzhou city

为深入探讨耕地质量定级方法,满足当前耕地占补平衡、土地整治成效分析等现实需求,以扬州市江都区为研究区,分别运用因素法、修正法和样地法对研究区进行耕地质量定级评价,对三种方法的定级过程、应用特点、适用范围及定级结果的合理性进行分析,并通过空间区分度(分异性)分析、空间重叠度(相同性)分析、样点相关性分析和耕地质量等、级衔接分析,从不同方面对三种方法进行了比较研究,认为因素法定级结果更加符合长江中下游平原地区实际。

In order to deeply explore the grading method of cultivated land quality,to meet the current demand of cultivated land occupation and compensation balance,land remediation effect analysis and other practical needs,taking Jiangdu District of Yangzhou City as the study area,using factor method,correction method and sample plot method to evaluate the quality of cultivated land in the study area,and to the grading process and application characteristics of the three methods,The scope of application and the rationality of the grading results are analyzed,and through the spatial discrimination(differentiation)analysis,the spatial overlap degree(similarity)analysis,the sample point correlation analysis and the cultivated land quality analysis,and the grade connection analysis,the three methods are compared and studied from different aspects,and it is considered that the factor classification results are more in line with the reality of the middle and lower reaches of the Yangtze River plain area.