了解红树林斑块空间演变，对于全面、准确地评估区域红树林保护、修复效果十分重要。为此，以1990年、2000年、2010年及2019年共４期Landsat影像作为主要数据源，基于监督分类法解译结果，综合景观动态分析、空间叠加分析及主要途径计数等方法对近30年茅尾海红树林斑块面积、数量的变化特征及其驱动因素进行了研究。结果表明：(1)1990—2019年间，茅尾海红树林斑块总面积由479.7 hm²增长到1 477.5 hm²，红树林质心不断向北、向西偏移；(2)1990—2010年间，茅尾海红树林斑块面积变化的主要驱动力为人为因素，2010—2019年间其主要驱动力为自然因素；(3)茅尾海红树林斑块总数虽从1990年的204个增加到2019年的405个，但斑块密度降低、斑块平均面积增加，说明斑块破碎化现象得到一定缓解，且其主要驱动力为自然因素。红树林人工造林特别是无瓣海桑造林对于研究区红树林恢复起到了积极作用。今后应加强对人工造林的成林过程、斑块扩散机制及其生态修复效果的研究。

Understanding the spatial evolution of mangrove patches is important to comprehensively and accurately evaluate the results of protection and restoration efforts in regional mangroves. In this study, the recent 30-year changes in area and number of mangrove patches in Maowei Sea and their driving factors were analyzed. The 1990, 2000, 2010 and 2019 Landsat remote sensing images were used as the main data sources, whereas the landscape dynamic analysis, spatial overlay analysis and main transformation route counting were adopted as the analytical approaches. The results demonstrated that: (1) The area of mangrove in Maowei Sea increased from 479.7 hm² to 1 477.5 hm² between 1990 and 2019 with the centroid shifting northward and westward. (2) Anthropogenic and natural factors were identified as the main driving force leading the changes in mangrove patch quantity in Maowei Sea from 1990 to 2010 and 2010 to 2019, respectively. (3) The number of mangrove patches increased from 204 in 1990 to 405 in 2019. However, the simultaneous occurrence of declining patch density and increasing mean patch size indicated that the patch fragmentation had been alleviated caused by the driving of natural factors. The artificial plantation of mangroves, especially using Sonneratia apetala, had contributed to the overall increase in mangrove area in Maowei Sea. Nevertheless, research on the artificial forestation process, expansion mechanism of mangrove patches and their ecological effects should be emphasized in future.