长江流域资源与环境 >> 2024, Vol. 33 >> Issue (3): 605-614.doi: 10.11870/cjlyzyyhj202403013

• 生态环境 • 上一篇    下一篇

鄱阳湖蓝藻时空分布特征及其驱动因子研究

胡芳1,2, 刘聚涛1,2*, 杨平1,2, 温春云1,2, 张兰婷1,2, 张洁1,2   

  1. (1.江西省水利科学院,江西 南昌 330029;2.鄱阳湖流域生态水利技术创新中心,江西 南昌 330029)
  • 出版日期:2024-03-20 发布日期:2024-04-03

Spatial and Temporal Distribution Characteristics of Cyanobacteria and the Driving Factors in Poyang Lake

HU Fang1,2, LIU Ju-tao1,2, YANG Ping1,2, WEN Chun-yun1,2, ZHANG Lan-ting1,2, ZHANG Jie1,2   

  1. (1.Jiangxi Academy of Water Science and Engineering, Nanchang 330029,China;
    2.Jiangxi Provincial Technology Innovation Center for Ecological Water Engineering in Poyang Lake Basin, Nanchang 330029,China)
  • Online:2024-03-20 Published:2024-04-03

摘要: 富营养化引起的局部水体蓝藻水华问题给鄱阳湖水生态环境保护带来挑战。为弄清鄱阳湖蓝藻时空分布特征及其影响因素,于2019~2020年对鄱阳湖蓝藻进行了现场监测,并通过冗余分析(RDA),探讨了影响蓝藻时空分布的主要驱动因子。结果表明:调查期间,共检出浮游植物7门128种,其中蓝藻15种,占总种类数量的11.72%,蓝藻种类数呈丰水期>平水期>枯水期,主湖区>入江水道>东湖区的分布规律。蓝藻细胞密度为0~2.19×107 cells/L,各点位蓝藻占比为0%~83.98%,其中蓝藻细胞密度主湖区>东部湖区>入江水道,丰水期>平水期>枯水期,2020年>2019年。假鱼腥藻(Pseudanabaena sp.)为东部湖区蓝藻优势种,微囊藻(Microcystis sp.)、假鱼腥藻为主湖区和入江水道蓝藻优势种。水温(T)、悬浮物(SS)、高锰酸盐指数(CODMn)、风速(VW)是主湖区蓝藻群落分布的主要影响因子,特殊的湖流和风场也是影响该湖区蓝藻分布格局的重要因素;透明度(SD)、SS和CODMn是入江水道蓝藻群落分布的主要影响因子;东部湖区蓝藻群落分布是各因子综合影响的结果。此外,磷已不是鄱阳湖蓝藻暴发的限制性营养元素,削减磷污染负荷也是鄱阳湖蓝藻水华防范的重要手段。

Abstract: The problem of cyanobacteria bloom caused by eutrophication was a challenge to the protection of aquatic environment of Poyang Lake.In order to clarify the spatial and temporal distribution characteristics of cyanobacteria in Poyang Lake and the influencing factors, cyanobacteria were monitored in the eastern lake, main lake and inlet channel of Poyang Lake from 2019 to 2020.The redundancy analysis (RDA) was used for data analysis.Results showed that, a total of 128 species from 7 phyla were detected, including 15 species of cyanobacteria, accounting for 11.72% of the total number of species.The number of phytoplankton species and cyanobacteria species showed the distribution pattern of wet season > flat season > dry season, and the main lake > inlet channel > eastern lake.The number of cyanobacterial density ranged from 0 to 2.19×107cells/L in Poyang Lake, with the proportion of cyanobacteria at each site ranged from 0% to 83.98%.Among them, the densities of cyanobacteria showed a distribution pattern of the main lake > eastern lake> inlet channel , wet season > flat season > dry season, and 2020 >2019.Pseudanabaena sp.was the dominant cyanobacterial species in the eastern lake area, Microcystis sp.and Pseudanabaena sp.were the dominant cyanobacterial species in the main lake area and the inlet channel.Water temperature, suspended solids, permanganate index, wind speed and the particular lake current and wind field were the main factors affecting the distribution of cyanobacterial communities in the main lake.Transparency, suspended solids and permanganate index were the main factors affecting the distribution of cyanobacteria in the inlet channel.The distribution of cyanobacterial community in the eastern lake was the result of the combined influence of all factors.Phosphorus was no longer the limiting nutrient for cyanobacterial outbreak in Poyang Lake, which implied that reducing phosphorus pollution load was also an important means to prevent cyanobacterial bloom in Poyang Lake.

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] 郭政, 董平, 陆玉麒, 黄群芳, 马颖忆. 长三角集装箱港口体系演化及影响因素分析[J]. 长江流域资源与环境, 2018, 27(07): 1340 .
[2] 伍文琪, 罗贤, 黄玮。李运刚. 云南省水资源承载力评价与时空分布特征研究[J]. 长江流域资源与环境, 2018, 27(07): 1385 .
[3] 王辉, 延军平, 王鹏涛, 武亚群. 多民族地区经济差异的空间格局演变[J]. 长江流域资源与环境, 2018, 27(07): 1390 .
[4] 魏国恩, 朱 翔, 贺清云. 环长株潭城市群空间联系演变特征与对策研究[J]. 长江流域资源与环境, 2018, 27(09): 1958 -1967 .
[5] 马坤, 唐晓岚, 刘思源, 王奕文, 任宇杰, 刘小涵. 长江流域国家级保护地空间分布特征及其国家公园廊道空间策略研究[J]. 长江流域资源与环境, 2018, 27(09): 2053 -2069 .
[6] 朱寅健. (新)环鄱阳湖区域交通网络通达性与旅游一体化发展[J]. 长江流域资源与环境, , (): 0 .
[7] 刘莲, 刘红兵, 汪涛, 朱波, 姜世伟. 三峡库区消落带农用坡地磷素径流流失特征[J]. 长江流域资源与环境, 2018, 27(11): 2609 -2618 .
[8] 田 鹏, 李加林, 史小丽, 王丽佳, 刘瑞清. 浙江省土地利用格局时空变化及生态风险评价[J]. 长江流域资源与环境, 2018, 27(12): 2697 -2706 .
[9] 孙殿臣, 王慧敏, 黄 晶, 刘高峰, . 鄱阳湖流域城市洪涝灾害风险及土地类型调整策略研究 ——以景德镇市为例[J]. 长江流域资源与环境, 2018, 27(12): 2856 -2866 .
[10] 罗若愚 钟易霖. 成都市社会空间结构演变研究(2000~2010)[J]. 长江流域资源与环境, , (): 0 .