作　　者： ; ; ; ; ; (刘平平）;

机构地区： 暨南大学生命科学技术学院水生生物研究所

出　　处： 《生态环境》 2007年第1期1-7,共7页

摘　　要： 惠州西湖是典型的热带浅水富营养化湖泊,通过建立示范区,进行了鱼类调控和水生植被修复,示范区的水质得到显著改善。作者从2006年3月到9月对水生植被、浮游动物和鱼类进行采样分析。结果表明,水生植被的生物量3月份时为1.249kg·m-2,到9月份逐步增加到9.167kg·m-2,鱼类生物量在研究期间有所下降,渔获量从3月份的17.5kg到9月份时降低至7.61kg,示范区浮游动物丰度低于平湖,其中大型浮游动物丰度高于平湖,轮虫丰度则呈缩减,示范区和未进行修复的平湖浮游动物体长均主要分布在0到0.2mm之间,体长大于0.6mm的分布比例示范区的是未修复平湖的两倍,浮游动物的生物量二者差别不大。 Huizhou West Lake is a typical shallow city lake which located in the tropical regions and now in eutrophication. Through comparatively studied in Pinghu Lake and demonstration plot which used the way of ecological restoration including removed from the plankfivorous fish and benthivorous fish and rebuilt the mycrophyte, the water quality in demonstration plot improved greatly. On this condition we studied the situation and relation of mycrophyte, zooplankton and fish from March to September in demonstration plot in 2006. The biomass of mycrophyte increased gradually from 1.249 kg·m^-2 in Mar to 9.167 kg·m^-2 in Sep and the weight of captured fish per month droped from 17.5 kg in Mar to 7.61 kg in Sep. The abundance of zooplankton in demonstration plot reduced mainly because the abundance of rotifera kept down but the abundance of large-sized zooplankton inceased evidently. The body size of zooplankton mostly were between 0 mm and 0.2 mm both in demonstration plot and Pinghu and the percent of body size longer than 0.6 mm in demonstration plot was doubler than in Pinghu, the biomass of zooplankton had no marked difference.

关 键 词： 生态恢复 水生植被 浮游动物 鱼类

领　　域： [环境科学与工程]