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感潮河流沉积物中溶解氧对硝化细菌垂向分布的影响
  • ISSN号：0529-6579
  • 期刊名称：中山大学学报(自然科学版)
  • 时间：2013
  • 页码：91-96
  • 分类：X14[环境科学与工程—环境科学]
  • 作者机构：[1]中山大学环境科学与工程学院,广东广州510275
  • 相关基金：国家科技重大专项资助项目（2009ZX07211-002-01）;国家自然科学基金资助资助项目（51039007,51179212）
  • 相关项目：农业面源污染物运移转化及其环境效应
作者： 林兴锐|符诗雨|吴群河|张仁铎|
关键词： 沉积物, 溶解氧, 硝化细菌, 垂向分布, sediment, DO , nitrifying bacteria , vertical distribution
中文摘要：

该文以污染严重的珠江广州河段为研究对象，分析了感潮河段沉积物中的理化性质（机械组成、碳氮、溶解氧）和硝化细菌数量的垂向分布，并利用当地菌种，设计溶解氧浓度梯度培养硝化细菌，探讨溶解氧对硝化细菌的影响。结果表明，沉积物中的溶解氧在0～10cm间由0．26mg／L降低到0．02mg／L，这主要与粉砂为主的机械组成和底栖动物的活动有关；沉积物中的硝化细菌主要受溶解氧浓度的影响，室内培养与野外实验结果对照显示，沉积物中的硝化细菌在低溶解氧条件下处于抑制状态，并导致氨氮的积累；在溶解氧浓度低于0．03mg／L时氨氧化细菌的数量比亚硝酸氧化细菌高。

英文摘要：

The aim of this study was to investigate the effect of dissolved oxygen （DO） on nitrifying bac- terial abundance and vertical distribution in sediment of Pearl River （Guangzhou section）. Vertical dis- tributions of sediment physical-chemical properties （ grain size distribution, concentrations of total organic carbon, total nitrogen, nitrate, ammonium, DO） and nitrifying bacteria abundance were characterized u- sing sediment cores. The experiments were conducted to cultivate bacteria using local bacteria and differ- ent DO concentrations. The results showed that DO concentrations decreased from 0. 26 to 0. 02 mg· L-1 within sediment depths of 0 to 10 cm, which was attributable to the sandy sediment and perturbation of benthic macrofauna. The nitrifying bacteria were inhibited by low DO condition, resulting in ammoni- um accumulation in subsurface sediment. With DO 〈 0. 03 mg· L-1 , the abundance of ammonia oxidi- zing bacteria was greater than that of nitrite oxidizing bacteria.

关于张仁铎：

农业面源污染物运移转化及其环境效应
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期刊信息
  • 《中山大学学报：自然科学版》
  • 北大核心期刊（2011版）
  • 主管单位:国家教育部
  • 主办单位:中山大学
  • 主编：王建华
  • 地址：广州市新港西路135号
  • 邮编：510275
  • 邮箱：xuebaozr@mail.sysn.edu.cn
  • 电话：020-84111990
  • 国际标准刊号：ISSN：0529-6579
  • 国内统一刊号：ISSN：44-1241/N
  • 邮发代号:46-15
  • 获奖情况:
  • 全国优秀高等学校自然科学学报及教育部优秀科技期...,广东省优秀科学技术期刊一等奖,《中文核心期刊要目总览》综合性科技类核心期刊,中国期刊方阵“双效”期刊
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,美国数学评论（网络版）,英国农业与生物科学研究中心文摘,德国数学文摘,荷兰文摘与引文数据库,美国剑桥科学文摘,英国动物学记录,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,英国英国皇家化学学会文摘,中国北大核心期刊（2000版）
  • 被引量:18509