Evaluating nutrient distribution and eutrophication pattern in a shallow impounded lake:Exploring the influence of floods

扫码查看

原文链接

NETL
NSTL
万方数据

外文摘要：Water quality management in shallow impounded lakes is challenging due to nutrient's enrichment and algal blooms.Lake Hongze is a reservoir for the South-to-North Water Diversion Project's Eastern Route and an essential water source for Jiangsu Province,China,and its water quality closely relates to the local aquatic ecosystem and affects the water supply security of the surrounding areas.The spatial and sea-sonal patterns of total nitrogen,total phosphorus(TP),and chlorophyll-a(Chl-a)in the lake were investigated and the effects of floods on these patterns were assessed.Hydrological data and trophic state parameters were analyzed using 7 years of monitoring data from 16 water sampling sites throughout the lake.The statistical analysis revealed the seasonal variation characteristics affected by floods and the differences in material transport continuity between inflow and outflow boundaries.Eutrophication assessment using the trophic level index and Chl-a concentrations also indicated eutrophication was concentrated at the southeast side of the lake.Spatial interpolation of Chl-a using the ordinary kriging method clarified that existence and movement of the localized eutrophication area in Lake Hongze.The mass balance calculations of TP indicated that a substantial amount of phosphorus entered the lake during the flood season,however,most severe algal blooms occurring after the flood season.The onset of algal blooms exhibits a significant time lag in response to phosphorus input,pri-marily due to the influence of hydrodynamic processes within the lake during the flood season.

外文关键词：

Algal bloomTrophic stateChlorophyll-aLake Hongze

作者：

Fuxin Zhang、Hongwu Tang、Guangqiu Jin、Yantao Zhu、Hong Zhang、Rodney Anthony Stewart、Edoardo Bertone、Saiyu Yuan

展开 >

作者单位：

National Key Laboratory of Water Disaster Prevention,Hohai University,Nanjing 210098,China

College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China

Key Laboratory of Hydrologic-Cycle and Hydrodynamic-System of Ministry of Water Resources,Hohai University,Nanjing 210098,China

School of Engineering and Built Environment Griffith University,Queensland 4222,Australia

Cities Research Institute,Griffith University,Queensland 4222,Australia

Australian Rivers Institute,Griffith University,Queensland 4111,Australia

展开 >

基金：

National Key R&D Program of ChinaNational Natural Science Foundation of ChinaFundamental Research Funds for the Central Universities ChinaNatural Science Foundation of Jiangsu ProvinceNatural Science Foundation of Jiangsu ProvinceJiangsu Funding Program for Excellent Postdoctoral Talent ChinaHuaihe River Commission of the Ministry of Water Resources in the People's Republic of China

项目编号：

2022YFC320260352209082B220202057BK20220979BK202209932022ZB171

出版年：

2024

DOI：

10.1016/j.ijsrc.2024.04.006

国际泥沙研究(英文版)

国际泥沙研究培训中心

国际泥沙研究(英文版)

影响因子：0.337

ISSN：1001-6279

年,卷(期)：2024.39(3)