滇池流域捞鱼河湿地水质评价与时空变化特征
Water Quality Evaluation and Variation Characteristics of Temporal-spatial in Laoyu River Wetland
周泽仪 1蒋少璐 2赵义勇 2董建超 2李伦斌 2赛冰蝉 2周小华2
作者信息
- 1. 昆明理工大学 生命科学与技术学院,云南 昆明 650500;昆明学院 化学化工学院,云南 昆明 650214
- 2. 昆明学院 化学化工学院,云南 昆明 650214
- 折叠
摘要
对滇池流域捞鱼河湿地的水质现状进行分析与评价,为改善湿地水环境状况提供数据支撑.分析了2022 年1 月至12 月份捞鱼河湿地中12 个监测位点的水体TN、TP、COD、Chla、NH3-N、pH、DO、T和S共9 个指标,采用主成分分析法对捞鱼河湿地主要污染指标进行筛选和评价.结果表明:12 月份水质最好,6 月份水质最差;水体流经捞鱼河湿地净化后,以湿地入水口11 号位点为参照点,其他位点水体的TP和TN削减率分别为10.73%～61.22%和2.20%～34.04%,湿地净化效果较好,但湿地水体水质为劣Ⅴ类.氮磷是捞鱼河湿地水体的限制性营养元素,磷是水体富营养化的最主要限制因子,农业面源污染和未收集的点源是影响湿地水质的主要因素.
Abstract
The water quality status of Laoyu River wetland in Kunming was monitored and evaluated in order to provide data support for improving the water environment of the wetland.In this paper,nine indexes including TN,TP,COD,Chla,NH3-N,pH,DO,T and S of 12 monitoring sections in Laoyu River wetland were analyzed in very month in 2022,and screened the main pollution indexes and evaluated the water quality of Laoyu River wetland by the principal component analysis.The results showed that the principal component analysis comprehensively evaluated that the water quality in December was the best and the worst in June.After the water flowed through Laoyu River wetland purification,other sampling sites relative to the inlet site 11,TP and TN reduction rate ranged from 10.73%to 61.22%and 2.20%to 34.04%in different space,wetland purification effect was better,the water quality of Laoyu River wetland was inferior to class V.Nitrogen and phosphorus were the limiting nutrient element in Laoyu River wetland,phosphorus was the most important limiting factor of water eutrophication,and agricultural surface source and point source but without the pollutant collection were the main factor affecting the wetland water quality.
关键词
捞鱼河湿地/水质指标/Pearson相关性/主成分分析Key words
Laoyu River wetland/water quality index/Pearson correlation/principal component analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据