Microbial CO2 assimilation is not limited by the decrease in autotrophic bacterial abundance and diversity in eroded watershed

doi:10.1007/s00374-018-1284-7

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	Microbial CO2 assimilation is not limited by the decrease in autotrophic bacterial abundance and diversity in eroded watershed
	Li, ZW (reprint author), Inst Soil & Water Conservat CAS & MWR, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China.; Haibing Xiao 2,4; Li, ZW (reprint author), Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.; Zhongwu Li 3,4; Xiaofeng Chang 4; Lei Deng 4; Xiaodong Nie 1; Chun Liu 3; Lin Liu 4; Jieyu Jiang 3
刊名	BIOLOGY AND FERTILITY OF SOILS
	2018
卷号	54 期号:5 页码:595-605
关键词	Soil Erosion Organic Carbon Autotrophic Bacteria Carbon-fixing Potential Chinese Loess Plateau
ISSN号	0178-2762
DOI	10.1007/s00374-018-1284-7
文献子类	Article
英文摘要	The impacts of soil erosion on soil structure, nutrient, and microflora have been extensively studied but little is known about the responses of autotrophic bacterial community and associated carbon (C)-fixing potential to soil erosion. In this study, three abandoned croplands (ES1, ES2, and ES3) and three check dams (DS1, DS2, and DS3) in the Qiaozi watershed of Chinese Loess Plateau were selected as eroding sites and depositional sites, respectively, to evaluate the impacts of soil erosion on autotrophic bacterial community and associated C-fixing potential. Lower abundance and diversity of autotrophic bacteria were observed in nutrient-poor depositional sites compared with nutrient-rich eroding sites. However, the relative abundances of obligate autotrophic bacteria, such as Thiobacillus and Synechococcus, were significantly enhanced in depositional sites. Deposition of nutrient-poor soil contributed to the growth of obligate autotrophic bacteria. The maximum microbial C-fixing rate was observed in DS1 site (5.568 +/- 1.503 Mg C km(-2) year(-1)), followed by DS3 site (5.306 +/- 2.130 Mg C km(-2) year(-1)), and the minimum was observed in ES2 site (0.839 +/- 0.558 Mg C km(-2) year(-1)). Soil deposition significantly enhanced microbial C-fixing rate. Assuming a total erosion area of 1.09 x 10(7) km(2), microbial C-fixing potential in eroded landscape can range from 0.01 to 0.06 Pg C year(-1). But its effect on the C pool recovery of degraded soil is limited. Dissolved organic C (DOC) was the main explanatory factor for the variation in soil microbial C-fixing rate (72.0%, P = 0.000).
学科主题	Agriculture
出版地	233 SPRING ST, NEW YORK, NY 10013 USA
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000434829400004
资助机构	Hundred-talent Project of the Chinese Academy of Sciences ; Hundred-talent Project of the Chinese Academy of Sciences ; National Natural Science Foundation of China [41271294] ; National Natural Science Foundation of China [41271294] ; Hundred-talent Project of the Chinese Academy of Sciences ; Hundred-talent Project of the Chinese Academy of Sciences ; National Natural Science Foundation of China [41271294] ; National Natural Science Foundation of China [41271294]
内容类型	期刊论文
源URL	[http://ir.iswc.ac.cn/handle/361005/8220]
专题	水保所科研产出--SCI_2018--SCI
通讯作者	Li, ZW (reprint author), Inst Soil & Water Conservat CAS & MWR, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China.; Li, ZW (reprint author), Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.
作者单位	1.Guangdong Inst Ecoenvironm Sci & Technol, Guangdong Key Lab Integrated Agroenvironm Pollut, Guangzhou 510650, Guangdong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100000, Peoples R China 3.Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China 4.Inst Soil & Water Conservat CAS & MWR, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Li, ZW ,Haibing Xiao,Li, ZW ,et al. Microbial CO2 assimilation is not limited by the decrease in autotrophic bacterial abundance and diversity in eroded watershed[J]. BIOLOGY AND FERTILITY OF SOILS,2018,54(5):595-605.
APA	Li, ZW .,Haibing Xiao.,Li, ZW .,Zhongwu Li.,Xiaofeng Chang.,...&Danyang Wang.(2018).Microbial CO2 assimilation is not limited by the decrease in autotrophic bacterial abundance and diversity in eroded watershed.BIOLOGY AND FERTILITY OF SOILS,54(5),595-605.
MLA	Li, ZW ,et al."Microbial CO2 assimilation is not limited by the decrease in autotrophic bacterial abundance and diversity in eroded watershed".BIOLOGY AND FERTILITY OF SOILS 54.5(2018):595-605.