目的本研究旨在探讨生态环境与健康素养水平(ecological environment and health literacy,EHL)在高校学生培养中的重要作用并提出对策建议。方法参考生态环境部居民问卷自行设计问卷,采用x^(2)检验比较学生在整体、一级维度、二级维度...目的本研究旨在探讨生态环境与健康素养水平(ecological environment and health literacy,EHL)在高校学生培养中的重要作用并提出对策建议。方法参考生态环境部居民问卷自行设计问卷,采用x^(2)检验比较学生在整体、一级维度、二级维度层面的EHL水平;采用线性回归描述整体与一级维度的关系;通过二元逻辑回归验证基本信息是否与EHL相关。结果样本量大小为323,实际采访691人,完成问卷者406人,应答率为58.75%,该校本科生整体EHL水平为58.87%;医学类学生对一级维度中基本概念知晓率(67.41%>56.83%)高于其他,差异有统计学意义(P<0.05);高校学生的性别、年级、专业和学习阶段在二级分类维度的差异均有统计学意义(P<0.05),线性回归分析结果表明,EHL水平与一级分类维度之间存在显著关联(F=320.133,P<0.001);二级维度EHL水平与年级显著相关(P<0.05)。结论西安市某高校学生EHL水平较高。性别、年级和专业的差异均对EHL水平有显著影响。展开更多
Bacterioplankton play key roles in the biogeochemical cycle and in organic contaminant degradation. The species richness and abundance of bacterial subgroups are generally distinct from each other, and this is attribu...Bacterioplankton play key roles in the biogeochemical cycle and in organic contaminant degradation. The species richness and abundance of bacterial subgroups are generally distinct from each other, and this is attributed to their different functions in aquatic ecosystems. The spatiotemporal variations of eight phylogenetic subgroups （Actinobacteria, Bacteroidetes, Cyanobacteria, Firmicutes, Planctomycetes, alpha-, beta-, and gamma-Proteobacteria） derived from Donghu Lake were investigated using PCR-DGGE fingerprinting, to explore their responses to environmental factors. Results indicate that Actinobacteria and beta-Proteobacteria were the two largest bacterial subgroups detected. These two groups and Bacteroidetes showed clear seasonal patterns in composition of the operational taxonomic unit. Results also suggest that the bacterioplankton subgroups in Donghu Lake were significantly correlated with different environmental factors. In brief, the total nitrogen was one of the major factors regulating all the bacterioplankton except for Actinobacteria. However, total phosphorus, another important eutrophication factor, contributed to the two largest bacterial groups （Actinobacteria and beta-Proteobacteria）, as well as to the Cyanobacteria and Firmicutes. Therefore, the responses of bacterioplankton subgroups to environmental factors were different, and this should be attributed to the differences in the fimctions of different groups.展开更多
文摘目的本研究旨在探讨生态环境与健康素养水平(ecological environment and health literacy,EHL)在高校学生培养中的重要作用并提出对策建议。方法参考生态环境部居民问卷自行设计问卷,采用x^(2)检验比较学生在整体、一级维度、二级维度层面的EHL水平;采用线性回归描述整体与一级维度的关系;通过二元逻辑回归验证基本信息是否与EHL相关。结果样本量大小为323,实际采访691人,完成问卷者406人,应答率为58.75%,该校本科生整体EHL水平为58.87%;医学类学生对一级维度中基本概念知晓率(67.41%>56.83%)高于其他,差异有统计学意义(P<0.05);高校学生的性别、年级、专业和学习阶段在二级分类维度的差异均有统计学意义(P<0.05),线性回归分析结果表明,EHL水平与一级分类维度之间存在显著关联(F=320.133,P<0.001);二级维度EHL水平与年级显著相关(P<0.05)。结论西安市某高校学生EHL水平较高。性别、年级和专业的差异均对EHL水平有显著影响。
基金Supported by the National Natural Science Foundation of China(No.31071896)the National Basic Research Program of China(973 Program)(No.2008CB418105)+2 种基金the Knowledge Innovation Program of Chinese Academy of Sciences(No.Y15E04)the Youth Innovation Promotion Association,Chinese Academy of Sciences(No.Y22Z07)the Key Laboratory of Marine and Estuarine Fisheries Resources and Ecology,Ministry of Agriculture(No.201007)
文摘Bacterioplankton play key roles in the biogeochemical cycle and in organic contaminant degradation. The species richness and abundance of bacterial subgroups are generally distinct from each other, and this is attributed to their different functions in aquatic ecosystems. The spatiotemporal variations of eight phylogenetic subgroups （Actinobacteria, Bacteroidetes, Cyanobacteria, Firmicutes, Planctomycetes, alpha-, beta-, and gamma-Proteobacteria） derived from Donghu Lake were investigated using PCR-DGGE fingerprinting, to explore their responses to environmental factors. Results indicate that Actinobacteria and beta-Proteobacteria were the two largest bacterial subgroups detected. These two groups and Bacteroidetes showed clear seasonal patterns in composition of the operational taxonomic unit. Results also suggest that the bacterioplankton subgroups in Donghu Lake were significantly correlated with different environmental factors. In brief, the total nitrogen was one of the major factors regulating all the bacterioplankton except for Actinobacteria. However, total phosphorus, another important eutrophication factor, contributed to the two largest bacterial groups （Actinobacteria and beta-Proteobacteria）, as well as to the Cyanobacteria and Firmicutes. Therefore, the responses of bacterioplankton subgroups to environmental factors were different, and this should be attributed to the differences in the fimctions of different groups.
