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DOI	10.1016/j.apsoil.2021.103882
	Linkages between soil respiration and microbial communities following afforestation of alpine grasslands in the northeastern Tibetan Plateau
	Chen, Long-Fei; He, Zhi-Bin; Wu, Xiu-Rong; Du, Jun; Zhu, Xi; Lin, Peng-Fei; Tian, Quan-Yan; Kong, Jun-Qia
通讯作者	He, ZB (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Linze Inland River Basin Res Stn,Chinese Ecosyst, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0929-1393
EISSN	1873-0272
卷号	161
英文摘要	Knowledge gaps exist in our current understanding of the linkages among soil respiration, microbial communities, and carbon sequestration following grassland afforestation. Here, we investigated the effects of forest planting on soil respiration, microbial communities, and associated soil properties in alpine grasslands of the northeastern Tibetan Plateau, and explored microbial mechanisms of the soil respiration response to afforestation. Generally, afforestation increased the richness and diversity of soil microbial communities. Redundancy analysis indicated that the variability in bacterial and fungal communities was mainly explained by soil organic carbon (SOC, R-bacteria(2) = 0.85, R-fungi(2) = 0.89), nitrate nitrogen (NO3--N, R-bacteria(2) = 0.64, R-fungi(2) = 0.82), available phosphorus (R-bacteria(2) = 0.91, R-fungi(2) = 0.91), and soil pH (R-bacteria(2) = 0.66, R-fungi(2) = 0.90). Afforestation also favored a significant increase in mean soil respiration rates during the growing season, and high correlations were detected between soil respiration and microbial community abundances and diversity, SOC, NO3--N, and soil pH. Because afforestation did not affect fine root biomass, increased soil respiration can be attributed to accelerated microbial respiration and elevated substrate availability. In addition, bacterial communities transitioned from Actinobacteria (oligotrophs)-dominant to Alphaproteobacteria (copiotrophs)-dominant communities. Copiotrophs are generally expected to have higher respiration rates than oligotrophs. Thus, the shift from Actinobacteria-dominant to Alphaproteobacteria-dominant bacterial communities may have also contributed to the increase in soil respiration following afforestation.
关键词	TEMPERATURE SENSITIVITY CARBON STORAGE HETEROTROPHIC RESPIRATION ORGANIC-MATTER CO2 EFFLUX NITROGEN DYNAMICS FOREST BACTERIA FUNGAL
英文关键词	Soil respiration; Microbial community structure; Grassland afforestation; Illumina MiSeq platform; Northeastern Tibetan Plateau
语种	英语
WOS研究方向	Agriculture
WOS类目	Soil Science
WOS记录号	WOS:000623257500007
来源期刊	APPLIED SOIL ECOLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254424
作者单位	[Chen, Long-Fei; He, Zhi-Bin; Du, Jun; Zhu, Xi; Lin, Peng-Fei; Tian, Quan-Yan; Kong, Jun-Qia] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Linze Inland River Basin Res Stn,Chinese Ecosyst, Lanzhou 730000, Peoples R China; [Wu, Xiu-Rong] Water Resource Conservat Forests Qilian Mountains, Zhangye 734000, Peoples R China
推荐引用方式 GB/T 7714	Chen, Long-Fei,He, Zhi-Bin,Wu, Xiu-Rong,et al. Linkages between soil respiration and microbial communities following afforestation of alpine grasslands in the northeastern Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2021,161.
APA	Chen, Long-Fei.,He, Zhi-Bin.,Wu, Xiu-Rong.,Du, Jun.,Zhu, Xi.,...&Kong, Jun-Qia.(2021).Linkages between soil respiration and microbial communities following afforestation of alpine grasslands in the northeastern Tibetan Plateau.APPLIED SOIL ECOLOGY,161.
MLA	Chen, Long-Fei,et al."Linkages between soil respiration and microbial communities following afforestation of alpine grasslands in the northeastern Tibetan Plateau".APPLIED SOIL ECOLOGY 161(2021).