摘要
在嘉陵江南充段及其主要入江支流布设18个采样点,测定总氮、总磷和叶绿素a等水质参数,探讨叶绿素a和氮磷有机物空间分布特征及其潜在影响因素,并运用修正的卡尔森营养状态指数(TSI)评价嘉陵江南充段及其主要入江支流采样点富营养化水平。结果表明:嘉陵江南充段氮磷元素及叶绿素a表现出南充市市区段浓度高;东河、西溪河、螺溪河、西河等支流受人类活动的影响大,氮磷及叶绿素a含量较高;嘉陵江南充段及其支流采样点TSI值在49.95~63.69之间变化,西河富营养化最严重(TSI为63.69),氮营养盐和溶解氧是影响嘉陵江南充段富营养化状态的主要因子。
Total nitrogen,total phosphorus and chlorophyll a in the water from 18 sampling sites in the main tributaries of Jialing River(Nanchong Section)were detected,their spatial distribution characteristics and the potential influencing factors were discussed.The eutrophication level of Jialing River(Nanchong Section)and its tributaries were evaluated according to revised Carlson Nutritional Status Index(TSI).The results showed that the concentration of nitrogen,phosphorus,and chlorophyll a in downtown Nanchong Section of Jialing River were high.East River,Xixi River,Luoxi River,West River and other tributaries were greatly affected by human activities,where the content of nitrogen,phosphorus,and chlorophyll a were high.The value of TSI varied from 49.95 to 63.69 in Jialing River(Nanchong Section)and its tributaries.The eutrophication was of the most serious in West River(TSI=63.69).Nitrogen and dissolved oxygen were the main factors affecting the eutrophication of Jialing River(Nanchong Section).
作者
黄兴
朱晓华
杨艳
任丽平
张柳青
周抑杨
青佳明
HUANG Xing;ZHU Xiao-hua;YANG Yan;REN Li-ping;ZHANG Liu-qing;ZHOU Yi-yang;QING Jia-ming(College of Environmental Science and Engineering,China West Normal University,Nanchong,Sichuan 637000,China;Institute of Environmental Science,China West Normal University,Nanchong,Sichuan 637000,China)
出处
《环境监测管理与技术》
CSCD
2021年第3期41-44,63,共5页
The Administration and Technique of Environmental Monitoring
基金
国家自然科学青年基金资助项目(41807458)
南充市科技计划基金资助项目(19YFZJ0076)
西华师范大学英才科研基金资助项目(17YC145,17YC548)
西华师范大学博士科研启动基金资助项目(17E055,15E011)。
关键词
叶绿素A
氮
磷
枯水期
主成分分析
嘉陵江南充段
Chlorophyll a
Nitrogen
Phosphorus
Dry season
Principal component analysis
Jialing River(Nanchong section)
