不同生物联合对滇池草海水质的净化作用
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X524

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生态环境部生物多样性调查与评估项目(2019HJ2096001006);云南省环境保护厅生物多样性保护专项“滇池土著水生植物保育区构建示范研究”


Purification effect of combination of different organisms on water quality of Caohai of Dianchi Lake
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    摘要:

    为了解不同沉水植物种植密度、不同沉水植物组合、沉水植物和鲫组合对滇池草海富营养化水体的净化效果,于2017年9—12月在滇池草海东风坝试验平台,选取4种滇池现存土著沉水植物(篦齿眼子菜(Stuckenia pectinata)、轮叶黑藻(Hydrilla verticillata)、穗花狐尾藻(Myriophyllum spicatum)、马来眼子菜(Potamogeton wrightii))、1种鱼((Carassius auratus))进行不同组合模拟试验。结果表明:种植密度为(0.63±0.06)g/L的篦齿眼子菜和轮叶黑藻对于TP的去除效果明显优于(0.33±0.05)g/L的种植密度;不同沉水植物组合均能够提高水体中的氮磷比,对草海富营养化水体的TN、TP、Chl-a具有明显的去除效果,试验组TN、TP、Chl-a的平均去除率分别提高了49.67%、9.06%、39.41%;鲫对于轮叶黑藻和篦齿眼子菜的生长具有明显的促进作用,加入鲫的穗花狐尾藻和马来眼子菜组合TN去除率提高了87.48%,且试验结束后,水体TN、TP去除效果稳定;沉水植物组合中,穗花狐尾藻和轮叶黑藻在高营养盐水体中生长状况最好,同时能有效控制水体中的TN、TP和Chl-a的质量浓度;鲫+穗花狐尾藻+马来眼子菜组合对草海富营养化水体的SS、TN、TP、Chl-a都具有较高的去除能力。

    Abstract:

    In order to understand the purification effect of different submerged macrophyte planting density, submerged macrophyte combinations, submerged macrophytes and Carassius auratus combinations on the eutrophication water of Caohai of Dianchi Lake, four kinds of native submerged macrophytes(Stuckenia pectinata, Hydrilla verticillata, Myriophyllum spicatum, Potamogeton wrightii)and Carassius auratus were selected to carry out different combination simulation tests in test platform of Dongfeng Dam in Caohai of Dianchi Lake from September to December in 2017. The results show that the removal efficiency of TP by Stuckenia pectinata and Hydrilla verticillata with planting density of(0.63±0.06)g/L is better than that of(0.33±0.05)g/L. Different combinations of submerged macrophytes can improve the ratio of nitrogen to phosphorus in the water, and have obvious removal effect on TN, TP and Chl-a in eutrophic water of Caohai. The average removal rates of TN, TP and Chl-a in experimental groups increase by 49.67%, 9.06% and 39.41%, respectively. Carassius auratus has a significant role in promoting the growth of Hydrilla verticillata and Stuckenia pectinata. The removal rate of TN in the combination of Myriophyllum spicatum and Potamogeton wrightii increased by 87. 48%, and the removal effect of TN and TP in water was stable after the experiment. Among the submerged macrophyte combinations, the growth of Myriophyllum spicatum and Hydrilla verticillata was the best in the high nutrient water, and the concentration of TN, TP and Chl-a in the water could be effectively controlled. The combination of Carassius auratus+Myriophyllum spicatum+Potamogeton wrightii has high degradation capacity for SS, TN, TP and Chl-a in eutrophic water, which is a good combination of water purification in the ecological restoration of eutrophic water in Caohai.

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王琦,刘高慧,肖能文,等.不同生物联合对滇池草海水质的净化作用[J].水资源保护,2020,36(3):89-97.(WANG Qi, LIU Gaohui, XIAO Nengwen, et al. Purification effect of combination of different organisms on water quality of Caohai of Dianchi Lake[J]. Water Resources Protection,2020,36(3):89-97.(in Chinese))

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  • 收稿日期:2019-03-18
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  • 在线发布日期: 2020-05-13
  • 出版日期: 2020-05-20