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根据距今4000a以来海面波动与河谷地貌、海岸地貌发育之间的关系,未来海面上升有可能导致入海河流发生溯源堆积,使河床纵剖面发生调整,海面上升在导致某些岸段蚀退的同时,还有可能使某些岸段的海淤进;河流溯源堆积导致的入海泥沙减少,可能使原有海岸蚀退加剧.对海面上升可能给山地海岸资源与环境带来的影响,建议加强观测与研究,进行合理规划与管理,并采取必要的工程措施.“,”According to the relation between the sealevel changes and river valley and coastal geomorphic development in the past 4000 years, the future sealevel rise may result in backfilling of river valleys and change in longitudinal profiles of river beds. When sealevel rise cause shore erosion aIong some parts of the coast in the future, onshore aggradation may occur in some parts. The decrease in fluvial sediment delivery to the coast zone resulted from river valley backfilling may accelerate the shore erosion caused by sealevel rise. To prevent the possible effects of sealevel rise on the natural resources and environment mountainous coasts, the author proposes that the observation and research should be strengthened, rational planning and management should be made and necessary engineering measures should be taken.