水源地型水库水生态安全评价方法探索

基于2018年8月开展的夏季江苏省17座水源地型水库水质调查数据，结合水源地型水库面临的主要水生态安全问题，综合运用层次分析法和专家意见法建立了水源地型水库水生态安全评价体系和方法，并首次提出将异味物质2-甲基异莰醇纳入评价体系.结果表明：江苏省水源地型水库水生态安全等级为优秀和良好的水库分别占29.4%和52.9%，处于一般等级的水库占17.7%；水库水生态安全的主要影响因素有透明度、异味物质2-甲基异莰醇（MIB）、蓝藻水华及富营养化.本研究通过抓住水源地型水库水生态安全的主要水生态指标进行简便易行的评估，可为类似水源地型水库因地制宜地制定个性化生态监测方案和评价方法提供科学依据.

An evaluation method for ecological security of water resource reservoirs

Water quality indicators were investigated in 17 water resource reservoirs in Jiangsu Province in August 2018, and an evaluative method of aquatic ecological security was developed by creatively combining hierarchy process, expert opinions and 2-methylisoborneol (MIB) index for the first time, which aims to solve the main water ecological security problems for water resource reservoirs. The results showed that 29.4% and 52.9% of the reservoirs had an excellent and good water ecological security levels, respectively, and 17.7% of the reservoirs had a general level. The transparency, MIB, cyanobacterial blooms and eutrophication were main factors that infected the water ecological security. The findings of this research could provide a guidance for developing personalized evaluative method for similar water resource reservoirs.