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中国海洋湖沼学会藻类学分会第七届会员大会暨第十四次学术讨论会

作者： C.X.Hu~a D.L.Zhang~(a,b,c) G.H.Wang~a L.Z.Chen~d Y.D.Liu~a a State Key Laboratory of Fresh water Ecology and Biotechnology,Institute of Hydrobiology,the Chinese Academy of Sciences,Wuhan 430072,P.R.China b Department of Life Sciences,Wuhan University of Technology,Wuhan 430070,Hubei,P.R.China c Graduate School of the Chinese Academy of Sciences,Beijing 100039,PR China d College of Resources and Environment,Wuhan University,Wuahan 430000,P.R.China

The relationship between algal community structure and soil microenvironment in the Gobi Desert was investigated in the Hexi Corridor of Gansu(China,between 37°45′21″-41°26′ 36″N, 94°62′33″.-102°88′26″E)during *** 36 taxa were identified from 448 samples of 20 sites,21 environmental parameters of including natural landscape,climate,geography and soil were analyzed *** results showed that 88.89% of species were cyanobacteria,89.13% of biomass was from blue-green algae;Schizothrix was the most abundant genus;Schizothrix fragile was the most abundant species,but Phormidium tenue was the only species present in all kinds of *** above two, Chroococcidiopsis sp.,Nostoc sp.,Lyngbya dendrobia ***,Lyngbya semiplena, Schizothrix friesii,Schizothrix mascarenica and Microcoleus vaginatus were also common species of most microenvironments,but 75% species were only confined to 1-3 kinds of microhabitats,with 33 % species only found in a special ***,*** and *** were common species of brown desert soil,gray desert soil and gray brown desert *** Correspondence Analysis(CCA)showed that the community was mainly decided by microscale parameters ofPO4,available N,effective Fe and Mn and clay,and they were all obviously affected by macroscale factors of slope inclination and elevation. Multi-Response Permutation Procedures(MRPP)analysis and Mantel test showed it was feasible to approximately determine algal community composition according to the topsoil color, and soil samples with ca.200 mm size was enough to analyze community composition when the topsoil color and texture was the same for biological soil *** the above basis,the possible application of algae in desertification control was discussed as well.

关键词： Gobi desert algal community structure Environmental factors

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Temporal patterns of algae in different urban lakes and their correlations with environmental variables in Xi’an,China

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Journal of Environmental Sciences 2023年第11期133卷 138-151页

作者： Shengnan Chen Hanyan Liu Haihan Zhang Kai Li Na Wang Weimin Sun Xiang Liu Limin Niu Ben Ma Fan Yang Haiyun Li Daijuan Zhao Yan Xing Shaanxi Key Laboratory of Environmental Engineering Key Laboratory of Northwest Water ResourceEnvironment and EcologyMOEXi’an University of Architecture and TechnologyXi’an 710055China School of Environmental and Municipal Engineering Xi’an University of Architecture and TechnologyXi’an 710055China National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and ManagementInstitute of Eco-environmental and Soil SciencesGuangdong Academy of SciencesGuangzhou 510650China Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China Shaanxi Environmental Monitoring Center Xi’an 710054China

Urban lakes were critical in aquatic ecology environments,but how environmental factors affected the distribution and change characteristics of algal communities in urban lakes of Xi’an city was not ***,we investigated the algal community structure of six urban lakes in Xi’an and evaluated the effects of water quality parameters on *** results indicated that the significant differences on physicochemical parameters existed in different urban *** maximum concentration of total phosphorus in urban lakes was(0.18±0.01)mg/L and there was a phenomenon of phosphorus *** addition,51 genera of algae were identified and Chlorella *** the dominant algal species,which was affiliated with *** analysis elucidated that each lake had a unique algal community network and the positive correlation was dominant in the interaction between algae species,illustrating that mature microbial communities existed or occupied similar *** analysis illustrated that environmental factors explained 47.35% variance of algal species-water quality correlation collectively,indicating that water quality conditions had a significant influence on the temporal variations of *** equation model further verified that algal community structure was directly or indirectly regulated by different water quality *** study shows that temporal patterns of algal communities can reveal the dynamics and interactions of different urban ecosystem types,providing a theoretical basis for assessing eutrophication levels and for water quality management.

关键词： Urban lakes algal community structure Network analysis Species interaction pattern Structural equation model

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Biogeographic distribution patterns of algal community in different urban lakes in China: Insights into the dynamics and co-existence

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Journal of Environmental Sciences 2021年第2期33卷 216-227页

作者： Haihan Zhang Rongrong Zong Huiyan He Kaiwen Liu Miaomiao Yan Yutian Miao Ben Ma Xin Huang Key Laboratory of Northwest Water Resource Enuironment and EcologyMOEXi'an University of Architecture and TechnologyXi'an 710055China Shaanxi Key Laboratory of Environmental Engineering Xi'an University of Architecture and TechnologyXi'an 710055China

Urban lake ecosystems are significant for social development,but currently we know little about the geographical distribution of algal community in urban lakes at a *** this study,we investigated the algal community structure in different areas of urban lakes in China and evaluated the influence of water quality parameters and geographical location on the algal *** results showed that obvious differences in water quality and algal communities were observed among urban lakes in different geographical *** was the dominant phylum,followed by cyanobacteria in all *** network analysis indicated that algal community composition in urban lakes of the western and southern area showed more variations than the eastern and northern areas,*** analysis and structural equation model revealed that nutrients and p H were dominant environmental factors that affected the algal community,and they showed higher influence than that of iron,manganese and COD Mn ***,algal community and density exhibited longitude and latitude *** general,these results provided an ecological insight into large-scale geographical distributions of algal community in urban lakes,thereby having potential applications for management of the lakes.

关键词： algal community structure Biogeographic pattern Ecological networks Urban lakes Structural equation model

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