福建省棉花滩水库富营养化状况评价及分析

Eutrophication Evaluation and Analyses of Mianhuatan Reservoir in Fujian Province

以2012年1-5月份棉花滩水库调查资料为基础,利用综合营养状态指数对棉花滩水库的营养水平进行评价。结果表明,棉花滩水库大部分水体在Ⅳ～Ⅴ类水质标准范围,大部分水体呈中营养状态,个别水域存在富营养化趋势,主要的污染物是沿岸畜禽养殖业和生活污水污染。库区水体中鱼类种群结构失调,水体生态系统平衡状态濒临破坏。

A study concerning eutrophication evaluation of Mianhuatan Reservoir was carried out from January to May in 2012. The nutrition state of Mianhuatan Reservoir was evaluated by using the comprehensive nutrition state index [ TLI （∑） ]. Results indicated that most of water bodies in Mianhuatan Reservoir were 1V to V level of water quality standards, and were in a mesotrophic state. Waters in some areas showed a trend of eutrophication. The primary contaminants were coastal livestock farming and sewage pollution. The structure of fish population in the reservoir was maladjusted. The balance of water ecological system was on the verge of damage.