| 藻华 | algal bloom Excessive and rapid growth of algae and other aquatic plants when they are stimulated to grow too quickly by pollution. It takes place when there are too many nutrients in the water and is aggravated when accompanied by a rise in temperature. Although the algae grow quickly they soon die because they have swallowed up all the water's nutrients. As they decompose they tend to rise to the surface and form a green slime. Algal bloom have increased because higher levels of nitrogen and phosphates from agricultural areas have leached from the fields into water courses (藻类与其他水生植物因受到污染刺激而快速生长所造成的快速过量生长。这种现象在水中有过多营养的情况下会出现，在气温升高的情况下会恶化。虽然藻类生长很快，但也会因水中的营养被耗尽而很快死亡。死亡的海藻被分解时会上升至水面形成一层绿色的黏质物。藻华现象已经因为农业用地中高浓度的氮和磷深入水道而变得更加严重。) |
