中国湖泊和水库的营养分类

A trophic classification of the lakes and reserviors in China

本文以近年完成的全国内陆水域渔业资源调查的资料为主要依据,对全国湖泊和水库试作营养分类,所引用的211个水域中,贫营养型仅占总数的14.7％,富营养型占33.2％,中营养型占52.1％。从不同地区来看,东北区以富营养型为主,北方区、长江区和云贵区以中营养型为主,蒙新区富营养型和中营养型各占40％,青藏区和华南区则以贫营养型为主。总的情况是,我国湖泊、水库的富营养化程度有从西南向东北增高的趋势。文中还探讨了不同营养类型湖库的渔业生产潜力。

Summarizing the data of hydrocbemical and hydrobiological surveys made in 211 water bodies, a trophic classification of the lakes and reserviors in China is discussed in this paper.Based on the primary production and standing crops of phytoplankton as the main parameter, there are 33.2% of these lakes and reserviors belonging to eutrophic, 1-1.7% belonging to oligotrophic and 52.1% belonging to mesotrophic. It shows there is a tendency of increasing the process of eutrofication of water bodies from south-western to north-eastern parts of China.The potential fish productivity of lakes and reserviors are also discussed in this paper.