【摘要】 城市群作为城市发展的最高空间组织形式，在高速城镇化进程中将不可避免地对地区生态环境产生胁迫影响。如何平衡生态环境和城镇化发展已经成为了值得关注的问题。基于Google Earth Engine云平台，利用1995～2020年拟合的长时间序列夜间灯光影像数据和Landsat影像数据，采用改进的夜间灯光指数和遥感生态指数分别表征城镇化水平和生态环境质量，分析了长江中游城市群城镇化与生态环境的变化特征，同时引入耦合协调发展模型，评价了镇化水平和生态环境质量之间的耦合协调程度，并分析了其变化特征。研究结果表明：(1)长江中游城市群城镇化经历了低水平(1995～2005年)—快速发展(2005～2015年)—中等水平(2020年)三个阶段，逐渐形成了以武汉、长沙、南昌为中心向周边辐射发展之势，但区域发展仍存在一定的不均衡现象；(2)生态环境经历了稳定—下降—恢复三个阶段，整体质量相对较好，变化阶段基本与城镇化吻合；(3)武汉、长沙、南昌三大中心城市城镇化与生态环境之间快速进入协调状态，并达到中、高度协调，与中心城市紧密相连的周边城市也逐步由失调状态过渡到中度协调状态，同时超过半数的城市长期处于不同程度的失调状态，但总体趋势均在向协调发展，至2020年这些城市中仅少数城市仍处于轻度失调状态，其余均达到基本协调状态。更多还原

【Abstract】 As the highest spatial organization form of urban development, the urban agglomerations will inevitably have a coercive impact on the regional ecological environment in the process of high-speed urbanization. How to balance the ecological environment and urbanization development has become an issue worthy of attention. Based on the cloud platform of Google Earth Engine, the improved night light index and remote sensing ecological index are adopted respectively to characterize the level of urbanization and the quality of ecological environment by making use of the long time series night light image data and Landsat image data from 1995 to 2020. And the variation characteristics of urbanization and ecological environment of urban agglomeration in the middle reaches of the Yangtze River are analyzed. By introducing the coupling and coordinated development model, the coupling coordination degree between urbanization and eco-environmental of urban agglomeration in the middle reaches of the Yangtze River is evaluated and its variation characteristics are analyzed. The research results show that:(1) The urbanization of the urban agglomeration in the middle reaches of the Yangtze River has experienced three stages: low level(1995-2005)-rapid development(2005-2015)-medium level(2020). It has gradually formed a trend of radiation around Wuhan, Changsha and Nanchang. However, there are still some imbalances in regional development.(2) The ecological environment has experienced three stages of stabilization-decline-recovery, but the overall quality is comparatively good and the change stage is basically consistent with urbanization.(3) The urbanization and ecological environment of Wuhan, Changsha and Nanchang have rapidly entered into the state of coordination, reached the medium and high degree of coordination. The surrounding cities which are closely connected with the central city also gradually transition from maladjusted state to moderate coordinated state. At the same time, more than half of the cities have been in the state of dissonance to varying degrees for a long time, but the overall trend is changing towards coordination. By 2020, only a few of these cities are still in the state of mild dissonance, and the rest have reached a state of basic coordination.更多还原