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2009年1月至12月每两周对滴水湖主要离子进行调查分析,结果显示:滴水湖湖水全年离子总量平均值为1.82 g/L,属于微咸水,主要阴阳离子分别为Cl-与Na+,水质类型为ClNⅢa。2009年湖水年内离子总量逐渐降低,离子组成亦发生了显著的变化,其中Cl-、Mg2+的比例不断降低、HCO3-、SO42-、Ca2+的比例则逐渐升高。不同湖区离子总量存在显著差异,水上运动俱乐部断面最高、南岛断面最低,但各湖区之间离子组成则无显著差异。分析各采样点的离子总量与组成的相关性可知,离子总量越高,Cl-所占比例越高,HCO3-所占比例越少,滴水湖的水质类型与长江下游其他湖泊及天然微咸水湖具有显著差异。试验获得了滴水湖离子的总量、组成及时空变化等重要的基础数据,为滴水湖今后的水化学与水生态研究奠定了良好的基础。
From January to December 2009 every two weeks, the main ions in Di Shui Lake were investigated and analyzed. The results showed that the average value of total ions in Di Ba Lake was 1.82 g / L, which belonged to brackish water. The main anion and cation were Cl- With Na +, the water quality is ClNIIIa. In 2009, the total amount of ions in the lake gradually decreased and the ionic composition also changed significantly. The proportion of Cl- and Mg2 + decreased continuously while the proportion of HCO3-, SO42- and Ca2 + gradually increased. The total amount of ions in different lake areas is significantly different. The water sports club has the highest section and the southern section has the lowest section. However, there is no significant difference in ion composition among all the lakes. Analysis of the correlation between the total amount of ions and the composition at each sampling point shows that the higher the total amount of ions is, the higher the proportion of Cl- is and the smaller the proportion of HCO3- is. The type of water quality in Di Shui Lake is similar to that of other lakes and natural micro-systems in the lower reaches of the Yangtze River Saltwater lakes have significant differences. The experiment obtains the important basic data such as the total amount, composition and temporal and spatial variation of the ions in the dripping lake, which lays a good foundation for the future research on water chemistry and aquatic ecology of the dripping lake.