洪泽湖湿地退化区植被构建技术效果评估

Effect Evaluation of Vegetation Construction Technology in Wetland Degradation Area of Hongze Lake

为评估洪泽湖湿地围网拆除区水生植被修复技术应用示范与推广工程的效果,基于样方调查及水质、沉积物检测,通过单因素方差分析(ANOVA)对项目区与对照区进行对比评价。结果表明,项目区生物组成与生物多样性相比对照区有明显提升;项目区水质情况有所改善,但敞水区由于水生植被尚处于群落演替发育早期,缺少植物净化,硝酸盐氮含量较高,整体水质特别是溶氧量相比对照区有明显提升;沉积环境富营养化程度得到明显改善。总体来看,该技术取得了良好效果,项目区整体生态环境得到了一定程度上的修复。

To evaluate the Hongze lake wetland seine demolition area aquatic vegetation restoration technology application demonstration and extension project,based on the quadrat investigation and detection of water quality,sediment by single factor analysis of variance(ANOVA)for evaluation of project area compared with the control area,the results showed that the project area of biological control area had significantly increased compared with biodiversity.The water quality of the project area was improved,but the nitrate nitrogen content was higher in the open water area because the aquatic vegetation was still in the early stage of community succession and development,lacking plant purification.However,the overall water quality,especially dissolved oxygen,was significantly improved compared with the control area.The eutrophication degree of sedimentary environment was improved significantly.In general,the technology had received good results,and the overall ecological environment of the project area had been restored to a certain extent.