您好，欢迎访问上海市农业科学院 机构知识库！
上海市农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Roles of vegetation in nutrient removal and structuring microbial communities in different types of agricultural drainage ditches for treating farmland runoff

文献类型： 外文期刊

作者： Cui, Naxin 1 ; Zhang, Xu 1 ; Cai, Min 1 ; Zhou, Li 1 ; Chen, Guifa 1 ; Zou, Guoyan 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Ecoenvironm Protect Res Inst, Shanghai 201403, Peoples R China

2.Engn Res Ctr Low Carbon Agr SERCLA, Shanghai 201415, Peoples R China

关键词： Agricultural NPS pollution; Vegetated drainage ditch; Purification efficiency; Sediment properties; Microbial diversity

期刊名称：ECOLOGICAL ENGINEERING （ 影响因子：4.035； 五年影响因子：4.611 ）

ISSN： 0925-8574

年卷期： 2020 年 155 卷

页码：

收录情况： SCI

摘要： Agricultural non-point source (NPS) pollution can cause eutrophication and ecosystem deterioration of the surrounding water bodies. Vegetated drainage ditch has been widely used for pollution mitigation from farmland, in which microbial communities and vegetation play important roles in the removal performance of nitrogen (N) and phosphorus (P). Hence, well understanding of their relationship would help to improve the potential of drainage ditch for N and P removal by optimizing the design and management. In the study, the N and P removal rates, as well as the bacterial communities in the sediment of three different ditches - one added with zeolite (SED), one planted with Vallisneria natans (VED), and the third added with zeolite and planted with the same vegetation (SVD), were investigated at three hydraulic loading rates (HLRs). The results showed that the N and P removal rates were significantly higher in vegetated ditches at the low HLR. The sediment bacterial communities in the vegetated and unvegetated ditches were remarkably different. Compared to unvegetated ditches, vegetated ones had significantly higher microbial abundance and diversity, which were positively correlated with N and P removal rates. The abundances of nitrifer Nitrospira and denitrifier Alphaproteobacteria were all significantly enhanced in vegetated ditches. Vegetation significantly decreased sediment electric conductivity and nutrient contents, which are the main factors structuring the bacterial communities. HLR and zeolite did not show evident effects on the bacterial diversity and abundance. Therefore, suitable vegetation is very important for the full function of the ditches in removing N and P from the farmland runoff.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：上海市农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台