基于利用效率限制的县域耕地质量定级方法研究:以河北省平山县为例

Grading cultivated land based on limitation of utilization efficiency:a case study in Pingshan County,Hebei Province

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,本研究充分借鉴已有耕地质量定级相关成果,从基础地力和利用效率2个维度构建了耕地质量定级指标体系,并提出了用于县域范围内耕地质量定级的限制系数法.以河北省平山县为例,用该方法进行实证研究,并同因素法、修正法定级结果进行对比分析.结果表明:1)平山县东部平原耕地质量级别最高,中部次之,西部最低,中等级别耕地面积占比较大;2)该方法相比因素法凸显了利用效率对耕地质量的限制作用;3)该方法相比修正法更有利于提高定级工作的时效性和精确性.本研究能够为当前耕地质量定级方法的选择提供一定参考.

The grading of cultivated land quality was examined in the present work to meet the current demand of arable land balance and land reclamation efficiency analysis.To construct a grading index system of cultivated land quality from two aspects of cultivated land productivity and utilization efficiency based on existing results,a limit coefficient method was put forward for grading cultivated land quality on a county scale in Pingshan County,Hebei Province.Cultivated land was evaluated by limit coefficient method and compared with factor method and modifying method.Quality of cultivated land in the eastern plain of Pingshan was found to be of highest,followed by that of the middle area;quality was the lowest in the west.Middle-level quality cultivated land accounted for a large proportion of the total.Compared with the factor method,the present method highlights the limiting effect of utilization efficiency on quality of cultivated land.This method is more conducive to improving the timeliness and accuracy of grading than the revise method.This study can provide some reference for choosing suitable method of cultivated land grading.