Nutrient pollution, such as nitrogen pollution, from lower latitudes may float north and promote algal growth in the Arctic.
低纬度地区的营养物污染，如氮污染，可能会漂向北部，促进北极藻类的生长。
2
Algal blooms arrive in Taihu every summer, encouraged by warm conditions and nutrient-rich agricultural run-off and sewage that accumulates in the lake.