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Carbon management practices regulate soil bacterial communities in response to nitrogen addition in a pine forest

文献类型：期刊论文

作者Yang, Lu1,2; Wang, Na1; Chen, Ye3; Yang, Wen4; Tian, Dashuan2; Zhang, Chunyu1; Zhao, Xiuhai1; Wang, Jinsong2; Niu, Shuli2
刊名PLANT AND SOIL
出版日期2020-05-22
页码15
关键词Aboveground litter removal Bacterial diversity Bacterial richness Community structure Nitrogen addition Root removal Soil microbial biomass C N ratio
ISSN号0032-079X
DOI10.1007/s11104-020-04570-9
通讯作者Zhao, Xiuhai(zhaoxh@bjfu.edu.cn) ; Wang, Jinsong(wangjinsong@igsnrr.ac.cn)
英文摘要Background Carbon (C) and nitrogen (N) represent the commonest limiting nutrients for microbial growth in terrestrial ecosystems. However, most of our understanding of how C:N ratios modulate microbial growth comes from short-term growth assays under controlled conditions. Methods Four levels of N additions including control (CK, 0 kg center dot hm(- 2)center dot a(- 1)), low N (LN, 50 kg center dot hm(- 2)center dot a(- 1)), medium N (MN, 100 kg center dot hm(- 2)center dot a(- 1)), and high N (HN, 150 kg center dot hm(- 2)center dot a(- 1)) inputs were applied monthly in a pine forest (Pinus tabulaeformis). Three C management practices were further conducted in each N additions plot, namely aboveground litter and belowground root removal (LRR), aboveground litter removal (LR), and intact soils (non-removal, NR). Soil bacterial richness, diversity, community composition and soil properties were measured. Results MN and HN significantly increased the relative abundance of copiotrophic taxa, but decreased that of oligotrophic taxa. Bacterial richness and diversity were not altered by N enrichment. LRR significantly increased the relative abundance of Gemmatimonadetes while decreased that of Actinobacteria. C management did not affect bacterial richness and community structure but LR significantly decreased bacterial diversity. Structural equation modeling showed that N addition induced the decrease in soil pH was responsible for the changes in the bacterial community structure. C management exhibited a direct negative effect on bacterial diversity and had an indirect positive effect on it via increasing soil moisture and microbial biomass C:N ratio. Conclusions The findings highlight the contrasting impacts of N addition and C management on soil bacterial communities and emphasize the regulation of above- and below-ground C substrate supplies on the N responses of soil bacterial communities.
WOS关键词LONG-TERM NITROGEN ; MICROBIAL COMMUNITY ; ORGANIC-MATTER ; DIFFERENTIAL RESPONSES ; RESPIRATION RESPONSES ; FUNGAL COMMUNITIES ; ENZYME-ACTIVITIES ; N ADDITIONS ; DIVERSITY ; FERTILIZATION
资助项目Key Project of National Key Research and Development Plan[2017YFC050400101] ; National Natural Science Foundation of China[31800404]
WOS研究方向Agriculture ; Plant Sciences
语种英语
WOS记录号WOS:000534872000002
出版者SPRINGER
资助机构Key Project of National Key Research and Development Plan ; National Natural Science Foundation of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/159560]  
专题中国科学院地理科学与资源研究所
通讯作者Zhao, Xiuhai; Wang, Jinsong
作者单位1.Beijing Forestry Univ, Res Ctr Forest Management Engn, State Forestry & Grassland Adm, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
3.No Arizona Univ, Dept Math & Stat, Flagstaff, AZ 86011 USA
4.Shaanxi Normal Univ, Coll Life Sci, 620 West Changan St, Xian 710119, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Lu,Wang, Na,Chen, Ye,et al. Carbon management practices regulate soil bacterial communities in response to nitrogen addition in a pine forest[J]. PLANT AND SOIL,2020:15.
APA Yang, Lu.,Wang, Na.,Chen, Ye.,Yang, Wen.,Tian, Dashuan.,...&Niu, Shuli.(2020).Carbon management practices regulate soil bacterial communities in response to nitrogen addition in a pine forest.PLANT AND SOIL,15.
MLA Yang, Lu,et al."Carbon management practices regulate soil bacterial communities in response to nitrogen addition in a pine forest".PLANT AND SOIL (2020):15.

入库方式： OAI收割

来源：地理科学与资源研究所

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