摘要
Abstract
To study the current status of plankton community and the significance of water quality indexes in xinglong lake of Tianfu New District, and accumulate the basic data of plankton community in Chengdu, the plankton community structure and the water quality in Xinglong lake were investigated and analyzed in January and April, 2015. A total of 53 phytoplankton and 33 zooplankton species were identified, which belonged to 43 and 23 genera, respectively. The dominant species of phytoplankton in Xinglong lake were species of Chlorophyta, Euglenophyta and Cyanobacteria, while the dominant species of zooplankton were species of Rotifers, Protozoa and Nauplii. The existing quantity of plankton in spring is greater than in that in winter, the existing quantityof phytoplankton in spring and winter were 1. 99 × 106cells/L and 6. 15 × 105cells/L, respectively, while the existing quantity of zooplankton in spring and winter were 4 243ind./L and 631ind./L, respectively. The mean values of the diversity indices (H') of xinglong lake in spring and winter were 1. 83 and 1. 61, respectively, the mean values of the abundance (Dm) of xinglong lake in spring and winter were 2. 60 and 1. 88, the mean values of the evenness indexes (J) of xinglong lake in spring and winter were both 0. 64, which indicated that the water quality of xinglong lake was moderate pollution, and spring was better than winter. The monitoring results of water physical and chemical indexes indicated that the water quality of xinglong lake was worse than the V class. NH3-N, TN and TP were the major pollutants in xinglong lake, their concentration were less in spring than in winter. For small lakes like xinglong lake, the evaluation results of plankton indexes was not exactly the same as the evaluation results of the water physical-chemical indexes. The plankton index is appropriate for the assessment of the whole lakewater quality, the water physical and chemical index is appropriate for the water quality assessment of each sampling site.关键词
成都天府新区/兴隆湖/浮游生物/水质状况Key words
Tianfu new district/Xinglong lake/plankton/water quality分类
资源环境
