Abstract:

The Poyang Lake City Cluster, a key region for economic development and ecological protection in Jiangxi Province, has its “Production-Living-Ecological Space,” which serves as an important spatial carrier for the sustainable development of the regional economy and the maintenance of ecological security. The promotion of the coupling and coordination of the “Production-Living-Ecological Space” is of great significance for promoting the coordinated and sustainable development of the city cluster. Based on the land use and socioeconomic data of the Poyang Lake City Cluster from 1980 to 2020, this study used the land use transfer matrix, coupling coordination degree model, and geographic detector to analyze the coupling coordination of the “Production-Living-Ecological Space” in its counties and the influencing factors. The results showed that 1) from 1980 to 2020, the sum of the areas of woodland-grassland ecological space, agricultural production space, and water ecological space in the counties of the Poyang Lake City Cluster accounted for more than 95% of the total area of the “Production-Living-Ecological Space” of the city cluster. The mutual transformation between them and other types of spaces was the key driving force for the evolution of the regional “Production-Living-Ecological Space” pattern. 2) From 1980 to 2020, the proportion of “highly coupled” in the “Production-Living-Ecological Space” of the Poyang Lake City Cluster changed from 7% to 4%, and the proportion of “highly coordinated” changed from 2.5% to 0.47%. Temporally, it first decreased and then increased. Spatially, the low-value areas of the coupling degree and the coupling coordination degree were distributed in the water and mountainous areas, such as Xiushui County and Tonggu County, whereas the high-value areas were concentrated in the central areas, such as Nanchang County and Jinxian County. 3) Terrain, land use intensity, and road network density were important factors affecting the coupling coordination of the “Production-Living-Ecological Space” in the study area. The explanatory power of the influencing factors showed that the influence of natural factors weakened, whereas that of economic and social factors strengthened. Moreover, the explanatory power of the interaction between the factors was generally greater than that of a single factor. The research results can provide reference suggestions and decision-making bases for the Poyang Lake City Cluster and regions with similar spatial characteristics to coordinate urban-rural development; build ecological security; and coordinate production, living, and ecological spaces.

Key words: production-living-ecological space, coupling coordination degree, influencing factors, spatial-temporal pattern, Poyang Lake City Cluster

摘要：

环鄱阳湖城市群作为江西省经济发展与生态保护的关键地区，其“三生空间”是区域经济可持续发展与维护生态安全的重要空间载体，促进其耦合协调对于城市群协同可持续发展具有重要意义。基于1980－2020年环鄱阳湖城市群土地利用数据与社会经济数据，采用土地利用转移矩阵、耦合协调度模型及地理探测器对其县域“三生空间”耦合协调性与其影响因素进行分析。结果显示，1）1980－2020年环鄱阳湖城市群县域“三生空间”中林草生态、农业生产与水域生态空间的空间面积之和占城市群“三生空间”面积95%以上，它们与其他类型空间的相互转化是区域“三生空间”格局演变的关键推力。2）1980－2020年环鄱阳湖城市群“三生空间”的“高水平耦合”占比由7.0%转变为4.0%，“高度协调”由2.5%转变为0.5%，在时间上表现出先下降后缓慢升高趋势；在空间上，耦合度与耦合协调度的低值分布于水域与修水县、铜鼓县等山地地区，高值则集中于南昌县、进贤县等中部地区。3）地形、用地强度及路网密度是影响研究区“三生空间”耦合协调性的重要因素，影响因素的解释力呈现自然因素减弱，经济与社会因素增强的趋势，且因子间交互作用解释力普遍大于单因子。研究结果可为环鄱阳湖城市群及具有相似空间特征区域统筹城乡发展、生态安全建设与有序协同生产、生活和生态空间提供参考建议和决策依据。

关键词: 三生空间, 耦合协调度, 影响因素, 时空格局, 环鄱阳湖城市群