严重的侵蚀威胁着弗雷泽河,随着沼泽的消失,冒着防洪、农田和野生生物的风险。 Critical erosion threatens the Fraser River, risking flood defenses, farmland, and wildlife as marshes vanish.

由于缺乏沉积物监测,加拿大弗雷泽河面临严重的侵蚀问题,威胁到防洪、农田和野生生物栖息地。 The Fraser River in Canada faces a critical erosion issue due to the lack of sediment monitoring, threatening flood defenses, farmland, and wildlife habitats. 自1970年代以来,斯特律根银行的潮汐沼泽已损失160公顷土地,而沉积物供应持续减少可能导致这些沼泽的崩溃,使防洪费用增加至数百亿美元。 Since the 1970s, the Sturgeon Bank tidal marshes have lost 160 hectares, and the ongoing decline in sediment supply could cause the collapse of these marshes, increasing flood defense costs to tens of billions of dollars. 问题来自欧洲定居者建造的堤坝,这些堤坝切断了城市与自然沉积物来源的联系。 The problem stems from dikes built by European settlers that cut off cities from natural sediment sources.