桂林市四湖水系水环境现状及水质评价

Water Environment Situation and Quality Evaluation of Four Lakes in Guilin

为了进一步监测、控制以及优化桂林市四湖景区的水环境,明确该湖区水环境变化特征以及主要影响因子,分析2008年春、夏季四湖水系的10个样点监测数据,采用因子分析法的主成分分析方法,结合水质标识指数,研究该湖区水质状况及变化趋势。结果从时间变化上看,春夏季水质较好且变化不大,春季的水质稍优于夏季;从四湖水质受控因子上看,春夏季四湖水的第一主成分都为营养盐,它对水质影响最大,是控制治理的主因子。

In order to monitor,observe and optimize the environment of “four lakes” in Guilin and to clarify the characteristics and major factors of the lakes, 10 samples collected in spring and summer in 2008 were analyzed with the method of principal component analysis. Refering to the marked index, water quality and its variation trend were shown in this paper. From the point of time ,water quality is better in spring ;From the point of influence factor ,nutritive salt ,the primary principal component in spring or in summer,is the most important factor for water quality.