This way, when water floods over, the amassed water is naturally cleansed as it passes through the wetlands. It becomes groundwater usable for agriculture and aquaculture. This zone also will include a newly developed "ecological aquaculture" area, in which low-lying fisheries will be turned into aquaculture facilities that would not be harmed by flooding, such as ones raising clams or aquatic plants.
此區還有一部份規劃為新興的「生態養殖專用區」，就是把地勢低窪的魚塭轉型為不怕淹水的養殖法，如養文蛤或龍鬚菜等水生植物。