摘要
于2018-2019年对鄂东南4个不同营养水平湖泊(仙岛湖、梁子湖、磁湖和策湖)进行水质监测,分析水体悬浮物的时空分布特征及其影响因素,以期为不同营养水平湖泊污染控制和生态修复提供参考。结果表明,4个湖泊的营养水平差别明显,综合营养状态指数(TLI)分布规律为仙岛湖(29.67)<梁子湖(50.62)<磁湖(61.78)<策湖(69.34)。仙岛湖、梁子湖、磁湖、策湖水体总悬浮物(TSS)年平均质量浓度分别为(10.16±4.57)、(12.42±6.86)、(25.03±13.42)、(45.17±14.72)mg·L^(-1),其分布规律与营养水平一致。梁子湖和磁湖各个季节悬浮物均以无机悬浮物(ISS)为主;策湖秋季悬浮物以有机悬浮物(OSS)为主,春、夏、冬季以ISS为主;仙岛湖则春季以OSS为主,其余3个季节以ISS为主。仙岛湖悬浮物主要是随地表径流输入到水体中的细颗粒泥沙、腐屑等;梁子湖、磁湖和策湖的悬浮物除外源输入外,还有来自于底泥再悬浮引起的细颗粒物、藻类颗粒物和水生植物残体等,总体上以无机颗粒物为主。4个不同营养水平湖泊水体的TSS浓度与TN、TP浓度均呈显著正相关关系,悬浮物含量在一定程度上可以反映湖泊的营养盐水平。
Water quality monitoring of four lakes with different eutrophic levels(Xiandao Lake,Liangzi Lake,Cihu Lake,and Cehu Lake)in southeastern Hubei Province was conducted from 2018 to 2019,and the spatial-temporal distribution characteristics of suspended solids and the influencing factors were analyzed.It is expected that the results of this research could provide references for pollution control and ecological restoration of lakes with different eutrophic levels.The following results were obtained:The eutrophic levels of the four lakes were significantly different,the relative order of the comprehensive trophic level index(TLI)values were Xiandao Lake(29.67)<Liangzi Lake(50.62)<Cihu Lake(61.78)<Cehu Lake(69.34).The annual average concentrations of total suspended solids(TSS)in Xiandao Lake,Liangzi Lake,Cihu Lake,and Cehu Lake were(10.16±4.57),(12.42±6.86),(25.03±13.42),and(45.17±14.72)mg·L^(-1),respectively;the relative order of the TSS values was consistent with the relative order of the TLI values.The suspended solids in Liangzi Lake and Cihu Lake were mainly composed of inorganic suspended solids(ISS)in all seasons.Organic suspended solids(OSS)was the main component of the suspended matter in Cehu Lake in autumn,while ISS was the main component of the suspended solids in spring,summer,and winter.The suspended solids in Xiandao Lake were mainly composed of OSS in the spring and ISS in the other three seasons.The suspended solids in Xiandao Lake were mainly composed of fine particles of sediments and debris that entered the water body through surface runoff.The suspended solids in Liangzi Lake,Cihu Lake,and Cehu Lake were not only from the runoff inputs,but were also made up of fine particles,algae particles,and aquatic plant residues from sediment resuspension,and inorganic particulate matter was the main component of the suspended solids.The TSS concentration in the four lakes with different eutrophic levels was significantly positively correlated with TN and TP;therefore,the content of suspended solids can
作者
吴超
吴晓东
林贵英
冯恋
俞新慧
赵晋珑
杨梓文
任伟祥
WU Chao;WU Xiao-dong;LIN Gui-ying;FENG Lian;YU Xin-hui;ZHAO Jin-long;YANG Zi-wen;REN Wei-xiang(College of Urban and Environmental Sciences,Hubei Normal University,Huangshi 435002,China;China Aero Geophysical Survey and Remote Sensing Center for Natural Resources,Beijing 100083,China;School of Earth Sciences and Resources,China University of Geosciences(Beijing),Beijing 100083,China)
出处
《生态与农村环境学报》
CAS
CSCD
北大核心
2022年第4期437-445,共9页
Journal of Ecology and Rural Environment
基金
湖北省自然科学基金青年基金(2018CFB321)
湖北师范大学湖泊流域重金属污染机理与生态修复创新团队项目(2019CZ014)。
关键词
鄂东南
湖泊
悬浮物
时空分布特征
southeastern Hubei Province
lake
suspended solids
spatial-temporal distribution characteristics
