| 瓦登海 | Wadden Sea The Wadden sea is a shallow sea extending along the North Sea coasts of The Netherlands, Germany and Denmark. It is a highly dynamic ecosystem with tidal channels, sands, mud flats, salt marshes, beaches, dunes, river mouths and a transition zone to the North Sea, the offshore zone. Most parts of the Wadden Sea, in particular in The Netherlands and Lower Saxony, are sheltered by barrier islands and contain smaller or wider areas of intertidal flats. The present form of the Wadden Sea is the result of both natural forces and action by man. Twice a day, on average, 15 km3 of sea water enter the Wadden sea. With the water from the North Sea, large amount of sand and silt are imported which settle in places with little water movement. During low tides large parts of the Wadden Sea emerge. These so-called tidal flats cover about 2/3 of the tidal area and are one of its most characteristic features. Nowhere in the world can such a large unbroken stretch of tidal flats be found. They accountfor 60% of all tidal areas in Europe and North Africa (瓦登海是一个沿荷兰、德国和丹麦的北海海岸延伸的浅海。它是一个有着潮汐通道、沙滩、泥滩、盐沼、沙滩，沙丘、河口的高度动态的生态系统，它是通往北海的过渡区、近海区域。大部分地区的瓦登海，尤其是在荷兰和下萨克森州，由屏障岛屿所庇护，包含有潮间平地较小或较宽的地区。瓦登海目前的状态是由自然力量和人的行为所共同造成的。每日两次有平均15立方公里的海水进入瓦登海。随着从北海流来的水，大量的沙和淤泥进入，迁入到少量水流动的地方。退潮期间瓦登海大部分地区才会出现。这些所谓的潮汐带覆盖约2/3的潮汐面积，这也是其最典型的特征之一。在世界上其它地方还没有发现有如此大型的、不间断的延伸潮汐带。它占欧洲和北非地区所有潮汐面积的60％。) |
