| 释义 |
富营养化fùyíngyǎnghuà指湖泊、水库、河口、海湾等流动缓慢的水域里,生物营养物质(如氮、磷)不断积累,含量过多。富营养化使藻类等水生生物大量繁殖,水质污染,水体变色,鱼虾死亡。排放工业废水和生活污水是水体富营养化的重要原因。{eutrophication; phenomenon occurring in a body of water, such as a lake, a reservoir, a river mouth or a sea bay, where water flows sluggishly, and where there is an excessive accumulation of dissolved nutrients (such as phosphates and nitrates), which encourages the propagation of aquatic algae. These cloud the water surface, preventing other aquatic plant life from getting enough light. When the algae die and decompose, they consume great amounts of oxygen, making it difficult for other aquatic organisms to survive. The discharge of industrial liquid waste and daily-life sewage is a major cause of eutrophication.} |