长江流域资源与环境 >> 2020, Vol. 29 >> Issue (5): 1140-1149.doi: 10.11870/cjlyzyyhj202005009

• 自然资源 • 上一篇    下一篇

不同水生植物腐解过程中有色可溶有机物(CDOM)的产生过程及微生物群落变化分析

刘新1,刘浩 1,2,江和龙 2,宋娜2*   

  1. (1.南京林业大学生物与环境学院, 江苏高校环境工程优势学科,江苏 南京 210037;
    2.中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室,江苏 南京 210008)
  • 出版日期:2020-05-20 发布日期:2020-07-13

Analysis of the Production Process of Chromophoric Dissolved Organic Matter (CDOM) and the Change of Microbial Community in the Decomposition Process of Different Aquatic Plants

LIU Xin 1, LIU Hao 1,2, JIANG He-long 2, SONG Na 2   

  1. (1.Advantage Disciplines of Environmental Engineering in Jiangsu Universities, College of Biology and the
    Environment, Nanjing Forestry University, Nanjing 210037, China; 2.State Key Laboratory of Lake Science and
    Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China)
  • Online:2020-05-20 Published:2020-07-13

摘要: 摘要: 通过对太湖的两种优势植物马来眼子菜(Potamogeton malaianus)和芦苇(Phragmites communis)进行室内腐解实验,利用紫外可见光谱和Illuminar高通量测序研究不同植物腐解过程中有色可溶有机物(CDOM)的产生情况及微生物群落变化。结果表明:马来眼子菜残体的去除率在2、10和30 d时均高于芦苇组。马来眼子菜组的溶解性有机碳(DOC)含量在第2天低于芦苇组,在第10天和第30天高于芦苇组。马来眼子菜组的CDOM相对浓度和其相对分子量在第2天高于芦苇组,在第10天和第30天低于芦苇组。初始水体中微生物分属34门、156纲,30天后,马来眼子菜和芦苇腐解液中的微生物多样性均降低了,分别分属23门和19门,以及95属和78属。两种植物在降解过程中,水体中降解难降解有机质类微生物逐渐占主要部分,如拟杆菌属(Bacteroides),密螺旋体属(Treponema),瘤胃微生物(Ruminococcaceae),此类微生物在芦苇降解组水体中的含量更多。

Abstract: Abstract:In this study, two dominant plants of Taihu Lake, Potamogeton malaianus and Phragmites communis, were subjected to indoor decomposing experiments.UV-visible spectroscopy and Illuminar high-throughput sequencing were used to study the production of Chromophoric Dissolved Organic Matter (CDOM) and microbial community changes during the decomposition of different plants.The results showed that the removal rate of Potamogeton malaianus residues was higher than that of the Phragmites communis group on the second day, 10th day and 30th day.The Dissolved Organic Carbon (DOC) content of the Potamogeton malaianus group was lower than that of the Phragmites communis group on the second day and higher than the Phragmites communis group on the 10th and 30th day.The relative concentration of CDOM and its relative molecular mass of the Potamogeton malaianus group were higher than the Phragmites communis group on the second day and lower than the Phragmites communis group on the 10th and 30th day.The microbes in the initial water body belong to 34 phyla and 156 classes.Thirty days later, the microbial diversity in Potamogeton malaianus and Phragmites communis decomposing solution were reduced and belong to 23 and 19 phyla, and 95 and 78 genera, respectively.During the degradation process of the two plants, the degradation organic matter microorganisms in the water gradually occupied a major portion, such as Bacteroides, Treponema and Ruminococcaceae.These microorganisms are more abundant in the Phragmites communis decomposition water.

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] 刘春霞, 李月臣, 杨华. 三峡库区(重庆段)石漠化敏感性评价及空间分异特征[J]. 长江流域资源与环境, 2011, 20(3): 291 .
[2] 徐嘉兴 |李 钢 |渠俊峰 |何林帮. 洪泽湖地区土地利用与景观格局演变[J]. 长江流域资源与环境, 2011, 20(10): 1211 .
[3] 陈文静| 张燕萍| 赵春来| 王昌来. 近年长江湖口江段鱼类群落组成及多样性[J]. 长江流域资源与环境, 2012, 21(06): 684 .
[4] 胡学东, 王占岐, 童秋英, 李德胜. 基于生态和社会经济约束的区域土地整治潜力评价研究[J]. 长江流域资源与环境, 2016, 25(05): 804 -812 .
[5] 徐慧, 汪权方, 李家永, 张景雄, 孙佩. 1980年以来中国大宗作物空间格局变化分析[J]. 长江流域资源与环境, 2017, 26(01): 55 -66 .
[6] 吴志勇1,徐征光1,肖恒2,吴宏伟1. 基于模拟土壤含水量的长江上游#br# 干旱事件时空特征分析[J]. 长江流域资源与环境, 2018, 27(01): 96 .
[7] 安俞静, 刘静玉, 李 宁, 乔墩墩, 刘梦丽. 中原城市群铁路网络可达性及经济联系格局[J]. 长江流域资源与环境, 2018, 27(09): 1947 -1957 .
[8] 陈万旭 李江风 冉端. 长江中游城市群土地利用转型和城镇化之间空间关系研究[J]. 长江流域资源与环境, 0, (): 0 .
[9] 刘冀, 孙周亮, 张特, 程雄, 董晓华, 谈新. 基于不同卫星降雨产品的澴水花园流域径流模拟比较研究[J]. 长江流域资源与环境, 2018, 27(11): 2558 -2567 .
[10] 谢五三, 吴 蓉, 丁小俊. 基于FloodArea模型的城市内涝灾害风险评估与预警[J]. 长江流域资源与环境, 2018, 27(12): 2848 -2855 .