【摘要】 20世纪 70年代以来 ,云南滇池水体富营养化问题日益严重 ,已成为制约滇池流域可持续发展的重要因素。本文以叶绿素 a( Chla)、TP、TN、CODMn和透明度 ( SD)等表征富营养化的指标作为评价因子 ,综合评价和分析了滇池水体富营养化变化特征及其成因。在此基础上 ,总结了过去滇池水体富营养化的防止措施 ,指出偏重外源控制、防护林体系不完善、底泥清除技术不合理是阻碍解决滇池富营养化的主要问题。针对这些问题 ,建议将恢复湖泊生态系统、控制内外污染源以及强化流域环境管理作为新的控制对策更多还原

【Abstract】 Since the 1970s,the eutrophicated problem of the Lake Dianchi,Yunnan province has been more and more serious, which becomes an important factor limiting sustainable development of the Lake Dianchi Basin. Applying nutrient indexes-chlorophyll-a(Chla), total phosphorustal(TP), total nitrogen(TN), chemical oxygen demand(CODMn) and transparency(SD) as evaluating factors, this paper synthentically evaluated and analyzed the characters and causes of eutrophicated phenomenon in the Lake Dianchi. Based on above study, forepassed control meatures were summarized in detail. And some main problems were specially put forward, which were particularly bias stress on external sources, incomplete defending tree fence and immoderate bed silt cleanup measures. On further thoughts, new control strategies were emphasized on resolving the eutrophicated problem of the Lake Dianchi. They could be concluded as follows: to restore Dianchi ecosytem, to control the pollutants from internal and external sources and to strengthen environmental management in the Lake Dianchi Basin.更多还原