洱海富营养化研究

１９９６年９月，洱海蓝藻暴发，水质恶化，湖泊从８月以前的中营养突变为富营养化湖泊。洱海富营养化的主要原因是由于引种太湖银鱼，导致酷渔滥捕，大力发展网箱养鱼、围湖滩养鱼等，导致湖泊生态系统食物链，食物网遭到严重破坏，生物多样性丧失。

Loss of Biodiversity Results in Erhai Lake Eutrophication

In Sept 1996,there appeared a great increase of the amount of cyanophyta and noticeable deterioration of water quality in the second biggest fresh water lake of Yunnan Province .The lake prompted itself into sudden eutrophication from semi-malnutrition before August.The main reasons of eutrophication are, first of all,introduction of Neosalanx taihuensis Chen,which has triggered off uncontrolled production of fish,large scaled development of net fish breeding (impoundment) and enclosure of lake shore for fish breeding and other activities .Consequently the lake ecological system,food chain and rood net have been seriously destroyed to such an exetent that loss of biodiversity came into being.