鉴于最近50多年来莱州湾东部砂质海岸土地利用、河流输沙等变化显著，将其作为由4个岬间海湾构成的整体，综合使用野外调查、3S（RS/GPS/GIS）、沉积物分析、数字海岸分析和数值模拟等方法，研究最近50年海岸动力地貌演变。 内容包括最近50年岬湾海岸地貌演变、人类活动的沉积动力效应、海岸冲淤动态。拟解决的关键科学问题为：（1）最近50年岬湾砂岸冲淤变化的时空分布，（2）最近50年水库拦沙、潮上带土地利用变化的海岸地貌效应及其时空耦合。 目标是揭示河流入海输沙减少、潮上带土地利用变化对海岸地貌演变的影响机制，查明海岸侵蚀发生的地貌冲淤背景、发展过程和时空差异，建立最近50年来莱州湾东部砂质侵蚀海岸动力地貌演变模式。 项目已有较多的前期研究成果和预研究基础。其研究结果可深化全球变化背景下的温带岬湾砂质海岸地貌演变研究，丰富关于陆域人类活动的海岸地貌效应的认识，推进砂质海岸侵蚀发生发展机理研究。

Because of the notable changes of land use/land cover and decrease of river sediment load along the eastern Laizhou bay (the Bohai sea) in recent fifty years, we propose to study the morphodynamic evolution of erosional sandy coast along the eastern Laizhou bay which is regarded as a unitive coast system made up of four neighbouring headland-bays with the comprenhensive usage of several relevant methods, such as field investigation, 3S (RS/GPS/GIS) technologies, sediment analysis,numerical coast morphological analysis and numerical hydrodynamic model. The main research contents of this program include the coastal morphological evolution,coastal erosion-sedimentation changes,coastal morphological response to human activities of the eastern Laizhou bay in recent fifty years. The key scientific questions of the program are the spatiotemporal distribution characteristics of erosion and sedimentation changes along the sandy coast of headland-bays under human activities in recent fifty years, and the coastal geomorphic response to land use/cover change in recent thirty years and sediment intercept of reservoir in the west-northern Jiaodong peninsula and their coupling response. The research aims of the program include discovering the affecting mechanism of river sediment load decrease and land use/land cover change in the supratidal zong on coastal geomorphic evolution of the coast firstly, investigating the morphological erosion-sedimentation change background, evolution history and differences of spatiotemporal of coastal erosion secondly, and establishing a morphodynamic evolution model of the erosional sandy coast along the eastern Laizhou bay in recent fifty years thirdly. This program has enough relevant research work foundation and some pilot research results. The reseach results of this program will firstly deepen the study on the sandy coast morphological evolution of temperate climate zone under the background of global changes, secondly enrich the knowledge about the coastal morphological response to the land human activities, and thirdly promote the geomorphic mechanism research on the erosional sandy coast.