长江经济带是我国重要的经济走廊，县级城市的收缩情况对于区域可持续发展具有重要意义。基于夜光遥感数据，从县域视角识别长江经济带收缩城市，并通过莫兰指数分析城市收缩的空间格局。结果表明：(1)长江经济带城市收缩现象呈扩大趋势，2000—2015年城市收缩主要出现在长江上、中游地区，云南、四川和贵州为高发地区，2015—2020年县级城市收缩现象开始在长江下游地区连片分布，总体上收缩程度较轻微；(2)城市收缩空间自相关关系显著，空间集聚效应越来越明显，上游地区高—高集群居多，中游地区空间集聚类型丰富，下游地区低—低集群居多。

As an important economic corridor in China, the shrinkage of county-level cities in the Yangtze River Economic Belt is of greatsignificance for regional sustainable development. Based on the nighttime light remote sensing data, we identified the shrinking cities in the YangtzeRiver Economic Belt from the perspective of counties, and analyzed the spatial pattern of urban shrinkage through the Moran index. The resultsshowed that(1)the urban shrinkage phenomenon in the Yangtze River Economic Belt showed an expanding trend, and the urban shrinkage mainlyoccurred in the upper and middle reaches of the Yangtze River from 2000 to 2015, while Yunnan Province, Sichuan Province and GuizhouProvince were the areas with high incidence of urban shrinkage, and the county-level urban shrinkage phenomenon began to be distributed in thelower reaches of the Yangtze River from 2015 to 2020. Overall, the degree of urban shrinkage was relatively modest.(2)The spatial autocorrelationrelationship of urban shrinkage was significant, and the spatial agglomeration effect of urban shrinkage was becoming more and more obvious,with the majority of high-high clusters in the upper reaches area, the rich spatial agglomeration types in the middle reaches, and the low-lowclusters in the lower reaches area.