边缘效应是指两种或多种不同现象相互作用、相互渗透、相互迭加而形成一种具有新的特性之现象。由于这种新现象是产生于原来两种现象的边缘地区,故称其为边缘效应。如从其产生成因看,则是由这两种现象相互作用所产生的,亦可称其为交叉效应或综合效应。由于海岸带处于海陆两个地段或要素相互剧烈作用地带,所以海岸带的边缘效应特别明显。海岸带不仅是海陆互相作用地带,不少还是人类活动最剧烈地带,故海 Edge effect is the interaction of two or more different phenomena, mutual infiltration, superimposed on each other to form a phenomenon with new characteristics. Since this new phenomenon is generated in the edge of the original two phenomena, it is called the edge effect. If it is caused by the reason, it is caused by the interaction of these two phenomena, which can also be called cross-effect or composite effect. As the coastal zone in land and sea two sections or elements of the violent role of each other, so the edge of the coast particularly evident. Coastal belt is not only the land and sea interact with each other, many of the most violent areas of human activity, so the sea