摘要
以太湖蠡湖区和贡湖湾区的13个主要出入湖河口为研究对象,分析了其水质及水生植物的分布情况,结果表明:河口的主要水质指标,即总氮(TN)、氨氮(NH^+4-N)、总磷(TP)、高锰酸盐指数(CODMn)的浓度分别为0.48~4.17,0.26~1.09,0.04~0.29,5.80~18.30mg/L,出入湖河口有机物和氮普遍污染严重;河口广布种的水生植物为芦苇、茭草、香蒲和水鳖,它们对氮、磷的吸收量排序为:芦苇>茭草>香蒲>水鳖;水生植物茎叶TN含量与水体TN含量无明显相关性,而TP的正相关性显著,即在一定浓度范围内,水生植物体内磷的积累量随水体磷含量的增加而增加。
In this paper, the water quality and the distribution of aquatic plants were analyzed in 13 main confluence areas of rivers and lakes of Lihu and Gong lake bay.The results showed that the main water quality indexes of the confluence areas of rivers and lakes, total nitrogen (TN), ammonia nitrogen (NH4^+-N), total phosphorus (TP) and permanganate index (COD Mn ), were 0.48~4.17 mg/L, 0.26~1.09 mg/L, 0.04~0.29 mg/L, 5.80~18.30 mg/L.The organic matter and nitrogen in confluence area of river and lake were generally in serious situation.The widely distributed aquatic plants were Phragmites australis, Zizania latifolia, Typha orientalis and Hydrocharis dubia, and the amount of nitrogen and phosphorus absorption arrangement was Phragmites australis>Zizania latifolia>Typha orientalis>Hydrocharis dubia.There was no significant correlation between TN content in stems and leaves of aquatic plants and TN content in water, while that of TP was positively correlated.In a certain concentration range, the accumulation of phosphorus in aquatic plants increased with the increase of phosphorus content in water.
作者
黄晓艺
胡湛波
叶春
魏伟伟
李春华
陈洪森
HUANG Xiao-yi;HU Zhan-bo;YE Chun;WEI Wei-wei;LI Chun-hua;CHEN Hong-sen(School of Resources,Environment and Materials,Guangxi University,Nanning 530004,China;State Key Laboratory ofEnvironmental Criteria and Risk Assessment,National Engineering Laboratory for Lake Pollution Control and EcologicalRestoration,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;College of Water Resources and Environment,China University of Geosciences (Beijing),Beijing 100083,China)
出处
《环境工程》
CAS
CSCD
北大核心
2019年第9期74-80,102,共8页
Environmental Engineering
基金
水体污染控制与治理科技重大专项(2017ZX07203-005)
关键词
出入湖河口
水质
水生植物
氮磷
相关性
confluence areas of rivers and lakes
water quality
aquatic plants
nitrogen and phosphorus
correlation