基于“三生”空间的重庆市土地利用演变与城镇化关系研究

Relationship Between Land Use Evolution and Urbanization in Chongqing City Based on Ecological-Productional-Living Spaces

[目的]分析重庆市土地利用时空演变规律,探究土地利用转型及景观格局响应的演变特征与城镇化的关系,为重庆市“三生”土地规划与城镇化可持续发展提供数据支持。[方法]基于“三生空间”功能分类的视角构建用地分类标准,利用2000,2010,2020年土地遥感影像和夜间灯光数据,采用转移矩阵、相关性分析及回归分析法进行分析。[结果]①2000—2020年重庆市生产、生态空间总体减少,生活空间持续扩张。2000—2010年,生产、生态空间减少191.87,252.95km^(2),生活空间增大446.03km^(2);2010—2020年,生产空间面积减少13.76km^(2),生态空间减少324.05km^(2),生活空间增大314.87km^(2)。②重庆市生产功能向生活功能转化较为明显。随着城镇化加强,生态空间转向生产空间显著,功能转变明显聚集于重庆市中心区域。③重庆市空间景观破碎度减小,景观复杂度逐渐提高,林草水生态空间占据主导优势。④2000—2010,2010—2020年土地利用面积变化对夜间灯光值的影响存在差异;2000年,城镇生活空间、农村生活空间变化对夜间灯光变化影响起主导作用,而2020年工业生产空间、城镇生活空间变化对夜间灯光变化影响较强。[结论]重庆市各类空间发生相互转换,利用不同“三生”空间类型变化和城镇化的关系,推动土地规划与城镇化协调发展。

[Objective]The spatial and temporal evolution of land use in Chongqing City were analyzed,and the relationship between the evolution characteristics of land use transformation and landscape pattern response and urbanization was explored in order to provide data support for ecological-production-living spaces land planning and sustainable development of urbanization in Chongqing City.[Methods]A land use classification criteria was constructed based on the perspective of the functional classification of ecological-productional-living spaces;utilizing land remote sensing images and nighttime lighting data in 2000,2010,and 2020;and adopting the transfer matrix,correlation analysis,and regression analysis methods.[Results]①From 2000 to 2020,the productional and ecological space of Chongqing City generally decreased,and the living space continued to expand.From 2000 to 2010,the productional and ecological space decreased by 191.87 km^(2)and 252.95 km^(2),respectively,and the living space increased by 446.03 km^(2).From 2010 to 2020,the productional space decreased by 13.76 km^(2),ecological space decreased by 324.05 km^(2),and living space increased by 314.87 km^(2).②The shift of productional functions to living functions was more obvious in Chongqing City.As urbanization intensified,ecological space shifted significantly to productional space,and the shift in function was obviously gathered in the central region of Chongqing City.③The spatial landscape fragmentation of Chongqing City decreased,the landscape complexity gradually increased,and the forest,grass,and water ecological space dominated.④There were differences in the influence of land use area changes on nighttime light in 2000-2010 and in 2010-2020.In 2000,changes in urban living space and rural living space played a dominant role in influencing changes in nighttime light,while changes in industrial production space and urban living space in 2020 had a stronger influence on changes in nighttime light.[Conclusion]Various types of space in Chongqing City have been transformed into each other,and the relationship between changes in different ecological-productional-living spaces types and urbanization has been utilized to promote the coordinated development of land planning and urbanization.