农用地等级监测指标体系与方法

通过农用地等级质量监测，实时获取农用地等级质量信息是实现农用地可持续开发利用和耕地占补平衡的基础。在已有农用地分等定级指标体系成果的基础上，通过指标易变性分析选出引起农用地等级质量变化的易变性指标，进一步分析导致易变性指标变化的驱动力，并结合当前相关指标或驱动力因子的监测技术现状，筛选出了能够直接或间接监测并评价农用地等级质量的监测指标，建立了农用地等级质量监测指标体系，并针对各种指标提出了相应的监测方法。分析结果表明，由于充分考虑了驱动力的区域差异性，构建的监测指标体系也具有很强的区域性，相应的监测方法更为实用。

Indices system and methods of monitoring gradation of agricultural land quality

For agricultural land, it is the foundation of achieving sustainable exploitation and utilization and keeping balance of requisition-compensation that obtaining the information of agriculture land gradation and its quality in real-time by the land gradation monitoring. Based on the existing agricultural land gradation monitoring indices system, variable indices which caused agriculture land gradation and quality changes were picked out according to analysis on the variability of indices. Authors analyzed driving forces which caused the changes of variable indices,and screened out the indices that could be used to monitor directly or indirectly and estimate agriculture land gradation and quality with consideration of the present monitoring technologies or driving force factors. Agricultural land gradation and quality monitoring index system were constructed and the relevant monitoring method was presented. The results indicated that constructed index system had strong regional characteristics for fully considering the difference of the driving forces in different sub-areas. Compared with traditional monitoring methods, the method in the research are more practical.