Soil pore water salinity is widely accepted to be the primary influencing factor determining coastal vegetation succession. This study investigated an ecological wetland restoration process on the Nanhui coast, Shanghai, during which seasonal changes in vegetation density, soil salinity, and coastal elevation were recorded in detail. These variables interacted with each other and showed coincident distributions. The whole restoration process was categorized into four periods according to vegetation community dynamics. Regression analysis revealed that elevation, not soil pore water salinity, was the most critical factor influencing the spatial pattern of vegetation survival, expansion, and extinction on the Nanhui coast. From a long-term perspective, the local vegetation extinction pattern may have an irreparable influence on salt marsh succession, especially in environments with intricate hydrological and sedimentary conditions such as the Nanhui coastline. Without intact vegetation communities, deficiencies in coastal ecosystem resilience may cause vegetation extinction under the influence of a strong hydrological environment. The area between vegetation communities and bare tidal flats, the “vulnerable zone”, was a critical area determining the ultimate success of coastal vegetation restoration.

土壤孔隙水盐度被广泛认为是决定沿海植被演替的主要影响因素。本研究调查了上海南汇海岸的生态湿地恢复过程，在此过程中详细记录了植被密度，土壤盐分和沿海海拔的季节性变化。这些变量相互影响并显示一致的分布。根据植被群落动态，将整个恢复过程分为四个阶段。回归分析表明，海拔高度而不是土壤孔隙水盐度是影响南汇海岸植被生存，扩张和灭绝的空间格局的最关键因素。从长远的角度来看，当地的植被灭绝模式可能会对盐沼的演替产生不可挽回的影响，特别是在水文和沉积条件复杂的环境中，例如南汇海岸线。没有完整的植被群落，沿海生态系统弹性的不足可能会在强大的水文环境的影响下导致植被灭绝。植被群落和裸露的滩涂之间的区域，即“脆弱区”，是决定沿海植被恢复最终成功的关键区域。