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

文献类型：期刊论文

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.; Haibing Xiao2,4; Li, ZW (reprint author), Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.; Zhongwu Li3,4; Xiaofeng Chang4; Lei Deng4; Xiaodong Nie1; Chun Liu3; Lin Liu4; Jieyu Jiang3
刊名BIOLOGY AND FERTILITY OF SOILS
出版日期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
DOI10.1007/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
WOS记录号WOS:000434829400004
出版者SPRINGER
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]
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.

入库方式： OAI收割

来源：水土保持研究所

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