The present study used the recently developed Remote Sensing-Based Ecological Index (RSEI) to assess the temporal-spatial variation of ecological quality in the metropolitan city of Isfahan (Iran) as a member of the UNESCO Creative Cities Network. This study was conducted from the Landsat TM/OLI satellite images of 2004, 2009, 2014 and 2019. The RSEI was synthesized by principal component analysis for four indices of Normalized Difference Vegetation Index (NDVI), Land Surface Temperature (LST), Land Surface Moisture (LSM) and Normalized Differential Build-up, and Bare Soil Index (NDBSI) based on the framework of the Pressure-State-Response (PSR) in the aforementioned years. The ecological quality of the city was assessed by RSEI over a 15-year period. The index has a value range of 0 (completely poor ecological quality) to 1 (completely desirable). In addition, the spatial heterogeneity of RSEIs at different intervals was assessed by the Moran index. The results showed that the RSEI value was always less than 0.4, which indicated the unfavourable ecological quality of the city. This index was 0.34, 0.37, 0.26 and 0.30 in 2004, 2009, 2014 and 2019, respectively. Therefore, the ecological quality of the city did not have a constant trend during the studied period and had several fluctuations, which could be attributed to the natural and anthropogenic changes in the studied period. Additionally, the results of the Moran index showed a steady decline, which indicated a declining homogeneity during this period. Matching the calculated RSEIs with the realities of the region at each time interval suggested that the index could be a useful tool for assessing urban ecological quality.

本研究使用最近开发的基于遥感的生态指数（RSEI）来评估作为联合国教科文组织创意城市网络成员的大都市伊斯法罕（伊朗）的生态质量时空变化。这项研究是从2004、2009、2014和2019年的Landsat TM / OLI卫星图像上进行的。RSEI是通过对主要归一化植被指数（NDVI），地表温度（LST）和地表植被的四个指标进行主成分分析而合成的在上述年份中，基于压力状态响应（PSR）框架的水分（LSM）和归一化差异累积以及裸土指数（NDBSI）。RSEI在15年的时间内对城市的生态质量进行了评估。该指数的值范围为0（完全不良的生态质量）至1（完全理想）。此外，通过Moran指数评估了RSEI在不同间隔的空间异质性。结果表明，RSEI值始终小于0.4，这表明该城市的生态质量较差。该指数在2004年，2009年，2014年和2019年分别为0.34、0.37、0.26和0.30。因此，该城市的生态质量在研究期间并没有恒定的趋势，并且有一些波动，这可能归因于研究期间的自然和人为变化。此外，Moran指数的结果显示稳定下降，表明此期间的同质性下降。在每个时间间隔将计算得出的RSEI与该地区的实际情况进行匹配表明，该指数可能是评估城市生态质量的有用工具。通过Moran指数评估RSEI在不同间隔的空间异质性。结果表明，RSEI值始终小于0.4，这表明该城市的生态质量较差。该指数在2004年，2009年，2014年和2019年分别为0.34、0.37、0.26和0.30。因此，该城市的生态质量在研究期间并没有恒定的趋势，并且有一些波动，这可能归因于研究期间的自然和人为变化。此外，Moran指数的结果显示稳定下降，表明此期间的同质性下降。在每个时间间隔将计算得出的RSEI与该地区的实际情况进行匹配表明，该指数可能是评估城市生态质量的有用工具。通过Moran指数评估RSEI在不同间隔的空间异质性。结果表明，RSEI值始终小于0.4，这表明该城市的生态质量较差。该指数在2004年，2009年，2014年和2019年分别为0.34、0.37、0.26和0.30。因此，该城市的生态质量在研究期间并没有恒定的趋势，并且有一些波动，这可能归因于研究期间的自然和人为变化。此外，Moran指数的结果显示稳定下降，表明此期间的同质性下降。在每个时间间隔将计算得出的RSEI与该地区的实际情况进行匹配表明，该指数可能是评估城市生态质量的有用工具。