The Association Analysis of Urban-Rural Coupling on the Major Grain-Producing Areas of Central Jilin Province
构建指标体系与灰色关联模型，分析吉林省中部产粮区城乡耦合发展的驱动因素和空间格局，发现城乡系统耦合主要受内部因素相互作用驱动，且耦合度呈现显著空间差异。
The urban-rural integrated development is one of the most special issues in academy and applied research in China.In this paper,the indicators system of quantitative assessment and grey correlation model were established based on the theory of grey system,and the driving factors and spatial pattern of urban-rural coupling development in the major grain-producing areas of central Jilin province were discussed.The results show that: 1) the driving forces of urban-rural system coupling mainly come from the interaction of the factors of the inner system.The benefits of urban no-agricultural industries,urban employment and investment have great affect on rural subsystem.On the other hand,there is a stronger correlation between the rural living standard and agricultural efficiency and urban subsystem.2) The urban-rural coupling degrees of the study area take on a significant spatial difference,the counties with higher coupling degree mainly concentrate in the midland along the Haerbin-Dalian railway and municipal districts of the five prefecture-level cities,but the counties with lower coupling degree mainly distribute to the southern hilly areas and western sand plain areas.3) According to the corresponding relationship of urban-rural coupling degree and GDP per capita,the 24 counties in the study area can be divided into four spatial coupling types,i.e.,harmony,amelioration,conflict and low-level harmony.