海涂是一种多用性自然资源 ,部分海涂可用于养殖鱼、虾、贝、藻 ;部分海涂可供围垦 ,种植粮棉等作物 ;其上生长的芦苇、咸水草、大米草等植物是轻工业原料或饲料 ;高潮滩上与其相连的海滨平原可以引水晒盐 ;海岸带的深水域与河口通常有港口建设 ,为国内外航运通道 ;海岸带还有 Tidal flat is a kind of multipurpose natural resource. Some tidal flats can be used for farmed fish, shrimp, shellfish and algae. Some of the tidal flat can be reclaimed and planted with grain and cotton crops. Plants such as reed, saltwater grass and rice grass are light industrial raw materials Or feed; the coastal plains connected with the high tide beach can draw salt water; the deep waters and estuaries of the coast are usually constructed with ports for shipping channels both at home and abroad;