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Seasonal changes impact soil bacterial communities in a rubber plantation on Hainan Island, China

文献类型： 外文期刊

作者： Lan, Guoyu 1 ; Li, Yuwu 2 ; Lesueurd, Didier 3 ; Wu, Zhixiang 1 ; Xie, Guishui 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Rubber Res Inst, Danzhou City 571737, Hainan, Peoples R China

2.Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, 88 Xuefu Rd, Kunming 650223, Yunnan, Peoples R China

3.CIAT Asia, Agr Genet Inst, Int Ctr Trop Agr CIAT, Hanoi, Vietnam

4.Minist Agr, Danzhou Invest & Expt Stn Trop Crops, Danzhou City 571737, Hainan, Peoples R China

关键词： Bacterial composition; Community diversity; Eucalyptus plantation; Seasonal effect; Tropical secondary forest

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：7.963； 五年影响因子：7.842 ）

ISSN： 0048-9697

年卷期： 2018 年 626 卷

页码：

收录情况： SCI

摘要： Rubber plantations have expanded rapidly over the past 20 years in tropical Asia and their impacts on regional ecosystems have garnered much concern. While much attention has been given to the negative impacts on aboveground diversity and function, the below ground bacterial soil community has received much less attention. Here, we investigated the community composition and diversity of soil bacteria of rubber plantations on Hainan Island in south China. The goals of the study were to describe changes in bacterial compositions and diversity across seasons. We found that seasonality defined by differences in rainfall amount strongly influenced bacterial communities. At both the Phylum and Family levels, we found significant differences in the total number of taxa, as well as the composition of the community as a function of season. Diversity of soil samples in the dry-rainy season was highest of three seasons, suggesting that bacterial structure was more sensitive in alternate periods of season. Diversity in the rainy season was substantial lower than in dry season. Results from a redundancy analysis showed that seasonal changes explained the largest part (31.9%) of the total variance of bacterial community composition. In conclusion, seasonal change had the greatest influence on bacterial communities, which overshadowed the effects of soil nutrient as well as other factors, and controls the bacterial communities in soils of RP in tropical region of Hainan. (C) 2018 Elsevier B.V. All rights reserved.

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