东北三省城乡融合与乡村地域功能耦合的时空特征
Spatial-Temporal Characteristics of Urban-Rural Integration and Rural Regional Function Coupling in the Three Northeastern Provinces

基于城乡融合与乡村地域功能关联耦合的概念内涵，以东北三省34个地级市为研究单元，采用2005~2019年城乡发展数据，运用灰色关联模型，对东北三省城乡融合与乡村地域功能关联的内部要素作用与城乡融合与乡村地域功能耦合时空特征进行研究。结果表明：东北三省的城乡融合和乡村地域功能各要素之间的关联度均超过0.5，表明它们之间存在着相当紧密的联系；强作用要素集中于城乡融合系统的经济、收入与消费领域以及乡村地域功能系统的生活与农业生产领域，弱作用要素集中于城乡融合系统的设施领域与乡村地域功能系统的工业生产领域；2005~2019年，东北三省城乡融合与乡村地域功能耦合度平均值由0.711下降到0.464，城乡相互作用趋于缓和、城乡融合适应性不断增强；东北三省的城乡融合和乡村地域功能呈现出南北差异逐渐缩小、低值集中于各省经济落后区域、高值向四大中心城市极化的空间格局，而南高北低的趋势也逐渐显现。
Based on the conceptual connotation of the coupling of urban-rural integration and rural regional functional association, taking 34 prefecture-level cities in the three northeastern provinces as the research unit, using the urban-rural development data from 2005 to 2019, and using the gray association model, the internal factor role of urban-rural integration and rural regional function coupling in the three northeastern provinces was studied. The results show that the correlation between the urban-rural integration and rural regional functional elements in the three northeastern provinces exceeds 0.5, indicating that there is a fairly close relationship between them; the strong factors are concentrated in the economic, income and consumption fields of the urban-rural integration system and the life and agricultural production fields of the rural regional functional system, and the weak factors are concentrated in the facilities field of the urban-rural integration system and the industrial production field of the rural regional functional system. From 2005 to 2019, the average coupling degree between urban-rural integration and rural regional functions in the three northeastern provinces decreased from 0.711 to 0.464, and the urban-rural interaction tended to ease and the adaptability of urban-rural integration continued to increase. The urban-rural integration and rural regional functions of the three northeastern provinces show a spatial pattern in which the difference between the north and the south gradually narrows, the low values are concentrated in the economically backward areas of each province, and the high values are polarized to the four central cities, while the trend of high south and low north is gradually emerging.