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引用本文:王琼,卢聪,范志平,李法云.辽河流域太子河流域N、P和叶绿素a浓度空间分布及富营养化.湖泊科学,2017,29(2):297-307. DOI:10.18307/2017.0205
WANG Qiong,LU Cong,FAN Zhiping,LI Fayun.Eutrophication and spatial distribution of N, P and chlorophyll-a in the Taizihe River Basin, Liaohe River Catchment. J. Lake Sci.2017,29(2):297-307. DOI:10.18307/2017.0205
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辽河流域太子河流域N、P和叶绿素a浓度空间分布及富营养化
王琼1,2, 卢聪1, 范志平1, 李法云1
1.辽宁石油化工大学生态环境研究院, 抚顺 113001;2.湖南农业大学资源环境学院, 长沙 410128
摘要:
通过对太子河流域46个采样点溶解性无机氮、溶解性无机磷、总氮、总磷、电导率、pH、溶解氧和叶绿素a浓度及相关环境因子的测定,分析氮、磷浓度与叶绿素a浓度的空间分布特征,利用回归分析判别氮、磷与叶绿素a浓度的相关性,冗余分析判别河流水质与环境因子的关系,并初步评价太子河流域水体富营养化状况.结果表明:太子河流域氮、磷浓度具有明显的空间异质性,表现为上游浓度较低且变化较平稳,辽阳段浓度逐渐上升且波动增大,鞍山段浓度最高.冗余分析显示氮、磷浓度的空间分布特征与土地利用方式、海拔、河岸缓冲带宽度、植被多样性密切相关.叶绿素a浓度与氨氮、硝态氮、溶解性无机氮、溶解性无机磷、总氮、总磷和电导率呈显著正相关,说明营养盐的增多在一定程度上会促进浮游藻类的增长.太子河流域水体富营养化评价综合指数显示,太子河流域“中”营养状态点位有27个,占58.7%,“富”营养状态点位有19个,占41.3%,没有“贫”、“重富”和“极富”营养状态.
关键词:  辽河流域  太子河流域      叶绿素a  富营养化  空间分布
DOI:10.18307/2017.0205
分类号:
基金项目:国家科技支撑计划“十二五”项目(2015BAD07B030102)、国家水体污染与治理科技重大专项(2012ZX07505-001-01)、辽宁省自然科学基金项目(2014020108)、辽宁石油化工大学环境科学与工程学科创新团队(11号)和辽宁石油化工大学科研启动项目(2014XJJ-013、2014XJJ-014)联合资助.
Eutrophication and spatial distribution of N, P and chlorophyll-a in the Taizihe River Basin, Liaohe River Catchment
WANG Qiong1,2, LU Cong1, FAN Zhiping1, LI Fayun1
1.Institute of Eco-environmental Sciences, Liaoning Shihua University, Fushun 113001, P. R. China;2.College of Resources and Environment, Hunan Agricultural University, Changsha 410128, P. R. China
Abstract:
Dissolved inorganic nitrogen, dissolved inorganic phosphorous, total nitrogen, total phosphorus,conductivity, pH, dissolved oxygen and chlorophyll-a were monitored in 46 sections along the Taizihe River, Liaohe River Catchment to understand their spatial distributions. The relationships between dissolved inorganic nitrogen, dissolved inorganic phosphorous and chlorophyll-a concentration were identified using the regression analysis. The relationship between water quality and environmental influencing factors was identified using redundancy analysis.The results showed that distributions of nitrogen, phosphorous and chlorophyll-a concentration had a certain spatial-related variability.The concentration of nitrogen, phosphorous and chlorophyll-a were low and stable in the upstreams, and were increasing and fluctuating in reaches of Liaoyang. In the reaches of Anshan the concentrations were the highest. Redundancy analysis showed that the spatial distribution characteristics of N and P were closely related to the land use, altitude,width of the riparian buffer and vegetation diversity. Ammonia nitrogen, nitrate nitrogen, dissolved inorganic nitrogen, dissolved inorganic phosphorous,total nitrogen, total phosphorus, and conductivity were positively correlated with chlorophyll-a concentration. It indicated that nitrogen and phosphorous could promote the growth of alga. Eutrophication evaluation index in Taizihe River Basin showed that there were 27 sample sites in the mesotrophic level,19 sample sites in a status of eutrophication, no oligotrophic, hyper eutrophic and extremely eutrophic status.
Key words:  Liaohe River Catchment  Taizihe River Basin  nitrogen  phosphorous  chlorophyll-a  eutrophication  spatial distribution
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