您好，欢迎访问浙江省农业科学院 机构知识库！
浙江省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Population and community structure shifts of ammonia oxidizers after four-year successive biochar application to agricultural acidic and alkaline soils

文献类型： 外文期刊

作者： He, Lili 1 ; Bi, Yucui 1 ; Zhao, Jin 1 ; Pittelkow, Cameron M.; Zhao, Xu 1 ; Wang, Shenqiang 1 ; Xing, Guangxi 1 ;

作者机构： 1.Chinese Acad Sci, State Key Lab Soil & Sustainable Agr, Changshu Natl Agroecosyst Observat & Res Stn, Inst Soil Sci, Nanjing 210008, Jiangsu, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Environm Resource Soil & Fertilizer, 198 S

关键词： Biochar;Long-term;Ammonia oxidizers;Nitrification

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：7.963； 五年影响因子：7.842 ）

ISSN： 0048-9697

年卷期： 2018 年 619 卷

页码：

收录情况： SCI

摘要： Long-term studies that advance our mechanistic understanding of biochar (BC) nitrogen (N) interactions in agricultural soils are lacking. In this study, soil potential nitrification rates (PNR), the abundance and composition of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) communities following 4-year of BC application were investigated using the shaken-slurry procedure and molecular sequencing techniques for an acidic Oxisol (QU) and an alkaline Cambisol (YU). Soils were obtained from an outdoor soil column experiment with straw-BC application rates of 0 (BC0), 2.25 (BC2.25) and 11.3 (BC11.3) Mg ha(-1) per cropping season for eight consecutive wheat/millet seasons. Quantitative polymerase chain reaction (qPCR) and 454 high-throughput pyrosequencing techniques were performed to quantify and sequence amoA gene copies and composition of AOA and AOB. Results showed that QU had lower PNR and a higher ratio of amoA gene copies of AOA to AOB than YU, PNR of QU with BC application was significantly associated with the amoA gene of AOB. Similar to previous short-term findings, BC application enhanced QU soil nitrification, which may be explained by the significant increase in AOB abundance and a shift in AOB community structure from Nitrosospira cluster 2 toward cluster 3, along with the disappearance of some obligate acidophile AOA groups, leading to the appearance of ammonia-oxidizers from neutral-alkaline soils in BC-amended acid soils. Canonical correspondence analysis (CCA) showed that soil pH was the most important factor driving shifts in ammonia-oxidizers composition. Although BC application did not have significant effects on PNR in YU, BC11.3 decreased AOA and AOB gene copies and influenced the relative abundance of community structure. Our findings represent the first investigation of long-termBC effects on AOA and AOB communities in agricultural soils using 454 high-throughput pyrosequencing, showing that BC application can alter soil characteristics and influence ammonia oxidizer community composition, abundance, especially in acid soils. (c) 2017 Elsevier B.V. All rights reserved.

  • 相关文献

[1]Preparation and Characterization of Camellia Shell Biochar. Qin, Zuodong,Li, Zhizhang,Wang, Meifeng,Duns, Gregory J.,He, Fulin,Luo, Xiaofang,Qin, Zuodong,Qin, Zuodong,Wang, Jianhua,Yang, Shengmao,Wang, Yuying,Zeng, Weixi,Yang, Shengmao,Wang, Yuying,Zeng, Weixi. 2016

[2]Bio- and hydrochars from rice straw and pig manure: Inter-comparison. Liu, Yuxue,Wang, Yuying,Lu, Haohao,Yang, Shengmao,Liu, Yuxue,Wang, Yuying,Lu, Haohao,Yang, Shengmao,Yao, Shuai,Brar, Satinder Kaur.

[3]The effect of biochar and crop straws on heavy metal bioavailability and plant accumulation in a Cd and Pb polluted soil. Xu, Ping,Sun, Cai-Xia,Ye, Xue-Zhu,Xiao, Wen-Dan,Zhang, Qi,Wang, Qiang.

[4]Ammonium citrate-modified biochar: An adsorbent for La(III) ions from aqueous solution. Wang, Yu-Ying,Lu, Hao-Hao,Liu, Yu-Xue,Yang, Sheng-Mao,Wang, Yu-Ying,Lu, Hao-Hao,Liu, Yu-Xue,Yang, Sheng-Mao.

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：浙江省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台