基于灰色关联分析法的耕地系统协调度研究

Coordination Degree of Cultivated Land System Based on Grey Correlation Analysis Method

将协调度定义引入耕地系统,构建耕地系统集约指标评价体系,引入12个评价因子,应用灰色关联分析法获得各评价因子的影响频度。依据2004-2008年兰州市相关数据,利用评价因子影响频度进行耕地系统协调度分析,得到兰州市下属三县耕地系统的协调系数。结合各县区实际情况,分别提出提升耕地系统协调度的方法。结果表明,基于灰色关联度分析法的耕地系统协调度研究可以在众多评价因子中筛选出对整体系统影响频度最大或较大的因子,可为系统未来的协调发展给出合理的建议。

The definition of the coordination degree was introduced to arable land system.The evaluation index system for intensive use in arable land system was constructed.12 evaluation factors were introduced.Their frequency weight was obtained by using gray correlation analysis method.Based on the related data in Lanzhou City during 2004-2008,the coordination degree of the cultivated land system was evaluated by using the influence frequency of the evaluation factor.The coordination coefficient of cultivated land system in the three counties of Lanzhou was obtained.Combined with actual situation,the method to escalating the coordination degree in every different land system was put forward.The results showed that the research on the coordination degree in cultivated land intensive based on gray correlation analysis method can screen out the dominant factors from a number of evaluation factors,which could give reasonable suggestions for the coordinated development of the system in the future.