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.
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.
[1] 中国环境年鉴社.中国环境保护年鉴[M],1999.188-189,605.
[2] 杨树华,贺彬.滇池流域的景观和局域面源污染控制[M].云南科技出版社,1998.1-10
[3] 崔文连,王勇.崂山水库叶绿素a含量与富营养化程度探讨[J].山东环境,1999(总91):50-51.
[4] 金相灿等.中国湖泊环境海洋出版社[M],1995.1322173.
[5] 中国环境年鉴社.中国环境保护年鉴[M],2000.474-476,714
[6] 李文义,李进军.滇池草海污泥底泥疏挖及处理工程(一期)施工技术[A].专家论文集——中国湖泊富营养化及其防治国际学术研讨会[C],2000.10,312-330.
[7] 孔海南.关于湖泊富营养化治理工程中应采用深度处理和生态工程技术的初浅建议——从日本湖泊富营养化治理中的经验教训谈起[C].专家论文集——中国湖泊富营养化及其防治国际学术研讨会,2000.10,301-304.
[8] 梁威,吴振斌.人工湿地对污水中氮磷的去除机制研究进展[J].环境科学动态,2000(3):32-37.
[9] 杨联京.凤眼莲污水处理工艺研究[J].湖南大学学报,1994(8):109-114.
[10] 孔繁翔等.环境生物学[M].高等教育出版社,2000.348-369.
[11] 卢升良.滇池的污染及其控制对策[J].重庆环境科学,1997(6):124.
[12] 郭慧光,闫自申.滇池富营养化及面源控制问题思考[J].环境科学研究,1999(5):43-44.
[13] 朱智,吴江明,周俊杰.滇池污染治理工作若干问题的思考[J].中国给水排水,1999(12):27-30.
