中国湖泊细菌群落的生物地理分布格局及驱动机制——基于文献数据的统计分析  

Biogeographic patterns and assembly mechanisms of bacterial communities in lakes,China-statistical analysis based on the published literature

作　　者：高鹏飞 王鹏[1,2] 丁明军[1,2] 张华[1,2] 聂明华[1,2] 黄高翔[1,2] GAO Peng-fei;WANG Peng;DING Ming-jun;ZHANG Hua;NIE Ming-hua;HUANG Gao-xiang(Key Laboratory of Poyang Lake Wetland and Watershed Research,Ministry of Education,Jiangxi Normal University,Nanchang 330022,China;School of Geography and Environment,Jiangxi Normal University,Nanchang 330022,China)

机构地区：[1]江西师范大学,鄱阳湖湿地与流域研究教育部重点实验室,江西南昌330022 [2]江西师范大学地理与环境学院,江西南昌330022

出　　处：《中国环境科学》2022年第6期2754-2763,共10页China Environmental Science

基　　金：国家自然科学基金项目(42167013);江西省自然科学基金(20202BABL203032);江西省教育厅研究生创新基金项目(YC2021-S231)。

摘　　要：为阐明中国湖泊细菌群落的生物地理分布格局及驱动机制,基于已发表文献,收集了228个湖泊的浮游或沉积物细菌门水平分类数据和环境因子数据进行分析.结果表明:中国湖泊浮游细菌群落的优势类群为变形菌门(Proteobacteria,35.92%)、放线菌门(Actinobacteria,25.03%)和拟杆菌门(Bacteroidetes,10.77%),沉积物中的优势类群为变形菌门(Proteobacteria,40.37%)、绿弯菌门(Chloroflexi,8.74%)和拟杆菌门(Bacteroidetes,8.55%).中国湖泊浮游细菌距离衰减程度显著低于沉积物细菌;湖泊细菌群落结构在北方、南方、青藏高原的空间差异显著,北方水体及沉积物中细菌的距离衰减模式均不显著,南方水体中显著但沉积物中不显著,青藏高原水体及沉积物中均显著.浮游细菌优势类群中除Proteobacteria外,Actinobacteria(南方>北方>青藏高原)和Bacteroidetes(青藏高原>北方>南方)的丰度在三个地区均具有显著差异;沉积物细菌优势类群Proteobacteria(北方>南方>青藏高原)、Chloroflexi(南方>北方>青藏高原)、Bacteroidetes(青藏高原>北方>南方)的丰度在三个地区均具有显著差异.影响北方湖泊浮游细菌群落分布的主要环境因子是溶解性有机碳,南方是溶解氧,青藏高原是硝酸盐氮;影响北方湖泊沉积物细菌群落分布的主要环境因子是总氮和pH值,南方是总磷,青藏高原是pH值.空间扩散限制与环境筛选作用共同塑造了中国湖泊细菌的生物地理分布格局.扩散限制对浮游细菌的影响小于沉积物细菌,对青藏高原湖泊浮游及沉积物细菌影响最大,对北方湖泊浮游及沉积物细菌影响最小;环境筛选作用对青藏高原湖泊浮游及沉积物细菌影响最大,对南方湖泊浮游细菌及北方湖泊沉积物细菌影响较小.In order to examine the biogeographic patterns and assembly of bacterial communities in Chinese lakes,data from the published literature on water or sediment bacteria at the phylum level and environmental factors from 228 lakes were collected.Results showed that the dominant taxa of the water bacteria communities in Chinese lakes were Proteobacteria(35.92%),Actinobacteria(25.03%)and Bacteroidetes(10.77%),and the dominant taxa in sediment were Proteobacteria(40.37%),Chloroflexi(8.74%)and Bacteroidetes(8.55%).Distance decay of water bacteria communities was significantly lower than that of sediment bacteria.There was significant spatial difference of lake bacteria communities between Northern China,Southern China and Tibetan Plateau.The distance decay of bacterial communities was not significant in Northern China,but significant in Tibetan Plateau;in Southern China,the distance decay of bacterial communities was significantin lake water,but not significant in lake sediment.The abundance of Actinobacteria(Southern China>Northern China>Tibetan Plateau)and Bacteroidetes(Tibetan Plateau>Northern China>Southern China)in lake waterwere significantly different between the three regions,while Proteobacteria was not.The abundance of Proteobacteria(Northern China>Southern China>Tibetan Plateau),Chloroflexi(Southern China>Northern China>Tibetan Plateau),and Bacteroidetes(Tibetan Plateau>Northern China>Southern China)in lake sediment were significantly different between the three regions.The main environmental factor influencing bacterial communities in lake water of Northern China was dissolved organic carbon,in Southern Chinawas dissolved oxygen,and in Tibetan Plateau was nitrate nitrogen.The main environmental factor influencing bacterial communities in lake sediment of Northern China were total nitrogen and pH,in Southern China was total phosphorus,and in Tibetan Plateauwas pH.Dispersal limitation and variable selection collectively shaped the biogeographic patterns of lake bacteria in China.Dispersal limitation had less i

关 键 词：中国湖泊 细菌群落 地理距离衰减 环境筛选 扩散限制 

分 类 号：X172[环境科学与工程—环境科学]