应用可视化软件CiteSpace将Web of Science核心合集及中国知网CNKI作为数据源,以2007年1月1日—2021年7月24日发表的有关淡水环境微塑料研究的文献为分析对象,通过分析淡水微塑料研究的相关文献关键词共现、关键词聚类、突显词分析、作...应用可视化软件CiteSpace将Web of Science核心合集及中国知网CNKI作为数据源,以2007年1月1日—2021年7月24日发表的有关淡水环境微塑料研究的文献为分析对象,通过分析淡水微塑料研究的相关文献关键词共现、关键词聚类、突显词分析、作者合作共现及机构合作共现等内容,对淡水微塑料相关的研究现状及新兴趋势进行分析。发文量分析表明,国内外近几年对淡水微塑料研究的热度持续升高,近两年涨幅较大,主要集中于中国、美国与德国等。通过关键词共现分析、聚类分析,发现国内外关于淡水微塑料的研究方向大体上相似,其中微塑料在淡水环境中的分布、淡水微塑料在沉积物中的分布与污染特征及微塑料对淡水环境的影响等都是国内外广泛关注的热点问题。通过关键词共现分析及突显词分析,发现淡水环境中微塑料的生态风险,如对淡水生物的影响是目前淡水微塑料研究的新兴趋势。除此之外,纳米塑料也是未来重点研究方向。展开更多
Particulate organic matter(POM)is an important energy source for aquatic consumers,understanding its origin and composition is essential for understanding the energetic dynamics of aquatic environments.The aim of this...Particulate organic matter(POM)is an important energy source for aquatic consumers,understanding its origin and composition is essential for understanding the energetic dynamics of aquatic environments.The aim of this study was to analyze the relationship between POM and phytoplankton(isotopic values and chlorophyll concentration)and abiotic variables during dry and rainy seasons.Sampling was conducted in rivers and lagoons in the floodplain of the Upper ParanáRiver.We found a greater difference in ^(δ13)C values of POM between sampling points than between seasons,indicating that the composition of regional sources influences the composition of POM more than dry and rainy seasons.In addition,the concentration of chlorophyll during the dry season was positively correlated with ^(δ13)C values during that rainy period.Additionally,we found a relationship between factors limiting the growth of phytoplankton and ^(δ13)C values of POM,such as phosphate ions,indicating that variables that regulate phytoplankton growth tend to influence the composition of POM in river floodplains.Therefore,maintaining the variables that regulate the phytoplankton community is of fundamental importance for the composition of POM,an important energy source in aquatic environments.展开更多
Freshwater aquaculture plays an important role in the global aquaculture industry.The success of freshwater aquaculture relies on the integration of bio-ecological remediation technologies to ensure its sustainable de...Freshwater aquaculture plays an important role in the global aquaculture industry.The success of freshwater aquaculture relies on the integration of bio-ecological remediation technologies to ensure its sustainable development.This paper systematically reviews the global literatures on bio-ecological remediation of freshwater aquaculture environments from 1990 to 2021,and discusses in detail the research progress and status quo in this field using both bibliometric analysis and content analysis.Our results indicate that the number of publications per year has increased year by year,with a particularly rapid increase after 2015.Institutions and researchers from China and the USA publish the greatest number of papers and contribute the most to this field.By analyzing the research progress in this field,we also find that the protection and restoration of freshwater aquaculture environments has received attention since as early as 1990,such as the application of constructed wetlands and recirculating aquaculture systems.Recently,researchers have increasingly focused on the use of microbial communities in remediation.Furthermore,vanRijn,J's papers are of great value to the research in this field.In content analysis,the application of primary technologies,including plant selection,aquatic animals,microorganisms,and biological filtration and purification equipment,as well as ecological engineering technologies with combinations of various types of organisms,is described to improve the effectiveness and efficiency of remediation.The performance,advantages,disadvantages,or limitations and prospects of these technology applications are analyzed in detail.By comparison,ecological engineering is shown to be the best remediation technology,being most comprehensive,and well-established.Taken together,this paper composes and summarizes existing work in this field,and provides guidance for future research on the improvement of existing technologies and the development of new technologies,with the aim of enhancing remediation cap展开更多
文摘应用可视化软件CiteSpace将Web of Science核心合集及中国知网CNKI作为数据源,以2007年1月1日—2021年7月24日发表的有关淡水环境微塑料研究的文献为分析对象,通过分析淡水微塑料研究的相关文献关键词共现、关键词聚类、突显词分析、作者合作共现及机构合作共现等内容,对淡水微塑料相关的研究现状及新兴趋势进行分析。发文量分析表明,国内外近几年对淡水微塑料研究的热度持续升高,近两年涨幅较大,主要集中于中国、美国与德国等。通过关键词共现分析、聚类分析,发现国内外关于淡水微塑料的研究方向大体上相似,其中微塑料在淡水环境中的分布、淡水微塑料在沉积物中的分布与污染特征及微塑料对淡水环境的影响等都是国内外广泛关注的热点问题。通过关键词共现分析及突显词分析,发现淡水环境中微塑料的生态风险,如对淡水生物的影响是目前淡水微塑料研究的新兴趋势。除此之外,纳米塑料也是未来重点研究方向。
基金Supported by the Research Nucleus in LimnologyIchthyology and Aquaculture (NUPELIA) for logistic support+4 种基金the Laboratory of Energetic Ecology and the Long-term Ecological Research Program (PELD/CNPq)Site 6-PIAP (upper ParanáRiver floodplain)PROEXUEMand Fundação Araucária for the scholarship
文摘Particulate organic matter(POM)is an important energy source for aquatic consumers,understanding its origin and composition is essential for understanding the energetic dynamics of aquatic environments.The aim of this study was to analyze the relationship between POM and phytoplankton(isotopic values and chlorophyll concentration)and abiotic variables during dry and rainy seasons.Sampling was conducted in rivers and lagoons in the floodplain of the Upper ParanáRiver.We found a greater difference in ^(δ13)C values of POM between sampling points than between seasons,indicating that the composition of regional sources influences the composition of POM more than dry and rainy seasons.In addition,the concentration of chlorophyll during the dry season was positively correlated with ^(δ13)C values during that rainy period.Additionally,we found a relationship between factors limiting the growth of phytoplankton and ^(δ13)C values of POM,such as phosphate ions,indicating that variables that regulate phytoplankton growth tend to influence the composition of POM in river floodplains.Therefore,maintaining the variables that regulate the phytoplankton community is of fundamental importance for the composition of POM,an important energy source in aquatic environments.
基金the National Natural Science Foundation of China(grant numbers 32173027 and U20A2010).
文摘Freshwater aquaculture plays an important role in the global aquaculture industry.The success of freshwater aquaculture relies on the integration of bio-ecological remediation technologies to ensure its sustainable development.This paper systematically reviews the global literatures on bio-ecological remediation of freshwater aquaculture environments from 1990 to 2021,and discusses in detail the research progress and status quo in this field using both bibliometric analysis and content analysis.Our results indicate that the number of publications per year has increased year by year,with a particularly rapid increase after 2015.Institutions and researchers from China and the USA publish the greatest number of papers and contribute the most to this field.By analyzing the research progress in this field,we also find that the protection and restoration of freshwater aquaculture environments has received attention since as early as 1990,such as the application of constructed wetlands and recirculating aquaculture systems.Recently,researchers have increasingly focused on the use of microbial communities in remediation.Furthermore,vanRijn,J's papers are of great value to the research in this field.In content analysis,the application of primary technologies,including plant selection,aquatic animals,microorganisms,and biological filtration and purification equipment,as well as ecological engineering technologies with combinations of various types of organisms,is described to improve the effectiveness and efficiency of remediation.The performance,advantages,disadvantages,or limitations and prospects of these technology applications are analyzed in detail.By comparison,ecological engineering is shown to be the best remediation technology,being most comprehensive,and well-established.Taken together,this paper composes and summarizes existing work in this field,and provides guidance for future research on the improvement of existing technologies and the development of new technologies,with the aim of enhancing remediation cap
