文章摘要
曹毅,李丽,陈丽平,刘其根,胡忠军.上海市环城绿带休憩型河道浮游植物群落结构特征[J].上海海洋大学学报,2020,29(5):734-745
上海市环城绿带休憩型河道浮游植物群落结构特征
Structural characteristics of phytoplankton community in suburb rivers for leisure located in Green belt around City of Shanghai, China
投稿时间:2020-03-12  修订日期:2020-08-24
DOI:10.12024/jsou.20200302960
中文关键词: 城市河流  浮游植物  群落结构  沉水植物  环境因子  水质评价
英文关键词: urban river  planktonic algae  community structure  submerged macrophyte  environmental factor  water quality evaluation
基金项目:国家重点研发计划项目(2017YFC0506003);上海市科委重大项目专项(08DZ1203101,08DZ1203102)
作者单位E-mail
曹毅 上海海洋大学 水产科学国家级实验教学示范中心, 上海 201306
上海海洋大学 农业农村部鱼类营养与环境生态研究中心, 上海 201306
上海水产养殖工程技术研究中心, 上海 201306 
 
李丽 上海海洋大学 水产科学国家级实验教学示范中心, 上海 201306
上海海洋大学 农业农村部鱼类营养与环境生态研究中心, 上海 201306
上海水产养殖工程技术研究中心, 上海 201306 
 
陈丽平 上海海洋大学 水产科学国家级实验教学示范中心, 上海 201306
上海海洋大学 农业农村部鱼类营养与环境生态研究中心, 上海 201306
上海水产养殖工程技术研究中心, 上海 201306 
 
刘其根 上海海洋大学 水产科学国家级实验教学示范中心, 上海 201306
上海海洋大学 农业农村部鱼类营养与环境生态研究中心, 上海 201306
上海水产养殖工程技术研究中心, 上海 201306 
 
胡忠军 上海海洋大学 水产科学国家级实验教学示范中心, 上海 201306
上海海洋大学 农业农村部鱼类营养与环境生态研究中心, 上海 201306
上海水产养殖工程技术研究中心, 上海 201306 
zjhu@shou.edu.cn 
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中文摘要:
      2017年对上海市环城绿带11条休憩型河道的浮游植物进行了季节调查,分析了沉水植物对浮游植物群落结构的影响及其结构特征与环境因子的关系。共采集到浮游植物8门83属143种,年均密度和生物量分别为(17.10±0.64)×106 ind/L和(3.28±0.58) mg/L,其中蓝藻密度最高、硅藻生物量最大。有水草(WSM)和无水草河道(NWSM)浮游植物群落物种组成存在显著差异,主要分歧种为微小平裂藻、颤藻1种和尖尾蓝隐藻,前两个物种为NWSM类型河道的特征种,后一物种为WSM类型河道的特征种。WSM河道的密度(P<0.001)、生物量(P<0.01)和丰富度指数(RP<0.001)均显著低于NWSM河道;有水草和无水草河道群落的Shannon物种多样性指数(H')存在显著差异(P<0.05)、均匀度指数(J)不存在显著差异(P>0.05),但季节和河道类型对它们有显著交互作用(P<0.01)。浮游植物密度与五日化学需氧量(BOD5)、高锰酸盐指数(CODMn)、氨氮(NH3-N)、总氮(TN)和总磷(TP)显著正相关,生物量与BOD5和TN显著正相关。BOD5和沉水植物是影响浮游植物物种空间分布的重要因素,多数参与RDA分析的主要浮游植物物种如微小平裂藻、颤藻1种、伪鱼腥藻1种、小球藻、直链藻1种在BOD5比较高、无沉水植物的河道中密度较高,尖尾蓝隐藻与沉水植物存在正相关关系。综合营养状态指数、指示物种法、RH'指示这些河道已经富营养化且处于中污染状态,无沉水植物河道使用R和有沉水植物河道使用H'进行水质评价更为合适。
英文摘要:
      The phytoplankton samples were seasonally collected from 11 suburb rivers for leisure situated in green belt around City of Shanghai in 2017. The effects of submerged macrophyte on the structural characteristics of phytoplankton community and its relationship with environmental factors were analyzed. A total of 143 species belonging to 8 phyla and 83 genera were identified and the density and biomass averaged (17.10±0.64)×106 ind/L and (3.28±0.58) mg/L, with the maximam density for blue-green algae (Cyanophyta) and biomass for diatom (Bacillariophyta). The species composition of phytoplankton community of rivers with submerged macrophyte (WSM) significantly differed from those without submerged macrophyte (NWSM). The two clusters were seperated by indicator species of Merismopedia tenuissima, Oscillatoria sp., and Chroomonas acuta, with characteristic species of M. tenuissima, Oscillatoria sp. for the cluster NWSM and C. acuta for the cluster WSM. The density (P<0.001), biomass (P<0.01) and species richness index (R, P<0.001) for the cluster of WSM were significantly lower than those for the cluster of NWSM. The two clusters significantly differed in Shannon's species diversity index (H'), but did not in evenness index (J), with season×cluster interactions for those two indices. The density of phytoplankton community was significantly correlated with five-day biochemical oxygen demand (BOD5), chemical oxygen demand (CODMn), ammonia nitrogen (NH3-N), total nitrogen (TN) and total phosphorus (TP), and its biomass conspicuously did with BOD5 and TN. Redundancy analysis (RDA) showed that BOD5 and the presence of submerged macrophyte were the key environmental factors responsible for spatial distribution of phytoplankton species. The higher density of the most main species included in RDA, such as M. tenuissima, Oscillatoria sp, Pseudanabaena sp., Chlorella vulgaris and Melosira sp.,occurred in rivers with the higher concentration of BOD5 and absence of submerged macrophyte, while there was a trend of the higher density of C. acuta at rivers with the presence of submerged macrophyte. Based on the comprehensive trophic level index (TLI), indictor species method, R, and H',the rivers were considered to be moderately polluted and eutrophicated. The R and H' are more suitable to assess the water quality of the rivers without and with submerged macrophyte, respectively.
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