干旱区生态环境知识资源中心(Arid): Autotrophic Bacterial Community and Microbial CO2 Fixation Respond to Vegetation Restoration of Eroded Agricultural Land

Arid

DOI	10.1007/s10021-019-00369-7
	Autotrophic Bacterial Community and Microbial CO2 Fixation Respond to Vegetation Restoration of Eroded Agricultural Land
	Xiao, Haibing 1,2,3; Li, Zhongwu 1,2,3,4; Deng, Chuxiong 1; Liu, Lin 2,3; Chen, Jia 2,3; Huang, Bin 5; Nie, Xiaodong 5; Liu, Chun 4; Wang, Danyang 4; Jiang, Jieyu 4
通讯作者	Li, Zhongwu ; Deng, Chuxiong
来源期刊	ECOSYSTEMS
ISSN	1432-9840
EISSN	1435-0629
出版年	2019
卷号	22 期号:8 页码:1754-1766
英文摘要	Vegetation restoration can dramatically affect soil carbon (C), nitrogen (N) pools and microbial communities. Yet, it is uncertain what effects of vegetation restoration have on autotrophic bacterial community and associated C-fixing potential. To investigate the responses of autotrophic bacterial community and microbial C-fixing rate to vegetation restoration of eroded agricultural land, three abandoned croplands (ES1, ES2 and ES3) and two secondary grasslands planted with Coronilla varia (GS1 and GS2) in the Qiaozi watershed of Chinese Loess Plateau were selected, and high-throughput sequencing and C-13 stable isotope labeling were applied in this study. Results showed that vegetation restoration significantly (P < 0.05) improved soil C and N contents while reduced soil moisture level. Total autotrophic bacterial abundance and species diversity in nutrient-rich secondary grasslands were significantly (P < 0.05) lower than those in nutrient-poor croplands. However, positive responses of obligate autotrophic bacteria, such as Alkalililimnicola and Synechococcus, to vegetation restoration were observed. Correlation analysis showed that autotrophic bacterial abundance and diversity were positively (P < 0.05) correlated with soil moisture, while negatively (P < 0.05) correlated with soil C and N nutrients. Microbial C-fixing rate ranged from 0.621 to 1.414 Mg C km(-2) y(-1) and the maximum value was observed in the ES3 site, followed by the ES1 site (1.088 Mg C km(-2) y(-1)). Microbial C-fixing rate in abandoned cropland was significantly (P < 0.05) higher than that in secondary grassland, and it was positively influenced by autotrophic bacterial abundance and diversity. Overall, vegetation restoration of eroded agricultural land has negative impacts on autotrophic bacterial community and microbial C-fixing potential. In arid and semi-arid regions, great transpiration loss induced by vegetation restoration may inhibit autotrophic bacteria growth, and which further reduces the potential of CO2 fixation by autotrophic bacteria.
英文关键词	erosion vegetation restoration organic carbon autotrophic bacteria CO2 fixation Chinese Loess Plateau
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000508406000005
WOS关键词	HILLY-GULLY CATCHMENT ; SOIL CARBON ; ORGANIC-MATTER ; ABUNDANCE ; DIVERSITY ; DYNAMICS ; EROSION ; REVEGETATION ; RESPIRATION ; BIOMASS
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2019-12-01
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311132
作者单位	1.Hunan Normal Univ, Coll Resources & Environm Sci, Changsha 410082, Hunan, Peoples R China; 2.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China; 3.MWR, Yangling 712100, Shaanxi, Peoples R China; 4.Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Peoples R China; 5.Guangdong Inst Ecoenvironm Sci & Technol, Guangdong Key Lab Integrated Agroenvironm Pollut, Guangzhou 510650, Peoples R China
推荐引用方式 GB/T 7714	Xiao, Haibing,Li, Zhongwu,Deng, Chuxiong,et al. Autotrophic Bacterial Community and Microbial CO2 Fixation Respond to Vegetation Restoration of Eroded Agricultural Land[J]. 西北农林科技大学,2019,22(8):1754-1766.
APA	Xiao, Haibing.,Li, Zhongwu.,Deng, Chuxiong.,Liu, Lin.,Chen, Jia.,...&Jiang, Jieyu.(2019).Autotrophic Bacterial Community and Microbial CO2 Fixation Respond to Vegetation Restoration of Eroded Agricultural Land.ECOSYSTEMS,22(8),1754-1766.
MLA	Xiao, Haibing,et al."Autotrophic Bacterial Community and Microbial CO2 Fixation Respond to Vegetation Restoration of Eroded Agricultural Land".ECOSYSTEMS 22.8(2019):1754-1766.