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本文采用灰色系统关联度分析方法,以空间理论数学为基础,依规范性、偶对称性、整体性和接近性原则,计算并分析了益阳大通湖14个生态因子的关联度,关联序结果为:亚硝酸氮>氮磷比>氨氮>总氮>硝酸氮>浮游动物>叶绿素a>透明度>总磷>水深>水温>浮游植物>酸碱度>溶解氧。益阳大通湖表现为总氮(包括亚硝酸氮、氨氮和硝酸氮)和氮磷比是优势影响因子。通过灰关联分析发现,大通湖水体水质良好,水体的总氮、氮磷比及总磷都适于浮游生物的生长繁殖,对增加渔产潜力有重要作用。
Based on the theory of spatial theory and based on the principles of normativity, even symmetry, integrity and proximity, this paper calculated and analyzed the correlation degree of 14 ecological factors in Chaoyanghu Lake, Yiyang. The result of correlation sequence was Nitrite Nitrogen Nitrogen Phosphorus> Ammonia Nitrogen> Total Nitrogen> Nitrate> Zooplankton> Chlorophyll a> Transparency> Total Phosphorus> Water Depth> Water Temperature> Phytoplankton> pH> Dissolved Oxygen. Yiyang Chase Lake performance of total nitrogen (including nitrite, ammonia nitrogen and nitrate) and nitrogen and phosphorus ratio is the dominant factor. Through the gray relational analysis, it is found that the water quality of Datong Lake is good, and the total nitrogen, nitrogen and phosphorus ratio and total phosphorus in the water body are suitable for the growth and reproduction of plankton, which play an important role in increasing the potential of fisheries.