中文摘要：

当加速盐沼的消失时， Large-scaled 开垦戏剧性地修改沿海的环境，它引起沿海的生态系统和生物多样性功能的降级。在这研究，我们与 ~ 的一个区域在一座小规模的潮汐的公寓探索了潮汐的公寓和盐沼范围的变化在江苏省的平凡海岸的 160 000 m2，中国。人的活动(例如，堤的构造) 是为潮汐的扁平的生长和盐沼范围的下列变化受益的一个关键贡献者。在前面定位了人造凹面海岸线，学习区域 2006 最后对在堤构造以后的沉积生长合适。根据从 2007 ～ 2012 的年度潮汐的表面举起调查，在人的影响潮汐的公寓的沉积率每年从一些厘米变化了到 23 cm/a。学习区域在潮汐的公寓和盐沼的扩大经历了快速的生长，与一个沿岸的酒吧，和盐沼的随后的衰落的形成。在泛滥的潮期间打破波浪从邻近的潮汐的公寓把许多沉积带到学习区域，它引起了盐沼的埋葬和退化。在 66 厘米以内的垂直谷物尺寸变化渴望在学习区域的核心也在潮汐的环境表明了上述变化。这研究显示开垦的小规模的潮汐的扁平的变化的回答是重要的，并且合理开垦将在堤前面为新盐沼形成受益。关于小规模的进化的进一步的研究象新辟的低地堤的空间计划一样的潮汐的公寓应该被加强让目的维持更健康的沿海的环境。

英文摘要：

Large-scaled reclamation modifies the coastal environment dramatically while accelerating the disappearance of salt marshes,which causes the degradation of the coastal ecosystem and the biodiversity function.In this study,we explored the changes of tidal flat and salt marsh coverage in a small-scale tidal flat with an area of ~160 000 m~2 in the plain coast of Jiangsu Province,China.Human activities（e.g.,the construction of dikes） are a crucial contributor that benefits for the tidal flat accretions and the following changes of salt marsh coverage.Located in the front of the man-made ＂concave coastline＂,the study area is suitable for sediment accretion after the dike construction in the end of 2006.On the basis of the annual tidal surface elevation survey from 2007 to 2012,the sedimentation rates in the human influenced tidal flat varied from a few centimeters per year to 23 cm/a.The study area experienced a rapid accretion in the tidal flat and the expansion of the salt marsh,with the formation of a longshore bar,and a subsequent decline of the salt marsh.Breaking waves during the flooding tide brought much sediment from the adjacent tidal flat to the study area,which caused burial and degeneration of the salt marsh.The vertical grain size changes within a 66 cm long core in the study area also demonstrated the above changes in the tidal environment.This study indicates that the responses of small-scale tidal flat changes to reclamation are significant,and the rational reclamation would benefit for the new salt marsh formation in front of the dikes.Further research about the evolution of small scale tidal flat as well as the spatial planning of the polder dike should be strengthened for the purpose to maintain a healthier coastal environment.