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Mowing and topography effects on microorganisms and nitrogen transformation processes responsible for nitrous oxide emissions in semi-arid grassland of Inner Mongolia

文献类型：期刊论文

作者Zhong, Lei3; Li, Frank Yonghong2; Wang, Yanfen3; Zhou, Xiaoqi4; Zhou, Shutong3; Gong, Xiaolei5; Bai, Yongfei6
刊名JOURNAL OF SOILS AND SEDIMENTS
出版日期2018
卷号18期号:3页码:929-935
关键词Microbial functional groups Mowing N2O emission potential Slope
ISSN号1439-0108
DOI10.1007/s11368-017-1819-9
文献子类Article
英文摘要Few studies have been done to investigate the impact of mowing on N2O emissions and the abundance of functional microbial genes, especially in sloping landscapes. This study aims to explore the impact of mowing on key N2O-producing processes under different topographical conditions in a semi-arid grassland. Soil samples were collected from a semiarid grassland ecosystem in Xilingol region, Inner Mongolia, where long-term management practices including non-mowing and mowing in flat and sloping blocks were conducted. We then determined (1) soil moisture, total carbon (TC) and nitrogen (TN), and mineral N (NH4 (+)-N and NO3 (-)-N) content; (2) the potential N2O emission from nitrification (N-N2O) and from denitrification (D-N2O) and potential N-2 emission (D-N2); and (3) the gene abundance of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB), the narG (nitrate reductase) gene, and nosZ (nitrous oxide reductase) gene. Soil moisture and potential N2O emission from nitrification and denitrification were significantly lower in sloping than in flat conditions, whereas the TC, TN, NH4 (+)-N, NO3 (-)-N content, gene abundance of AOA, AOB, narG, and nosZ showed no difference between flat and sloping conditions. Mowing significantly decreased the gene abundance of AOA, AOB, narG in both flat and sloping areas, and significantly decreased potential N2O emissions, especially in sloping areas. The potential N2O emission was significantly lower on sloping than flat grassland. Mowing significantly decreased the potential N2O emissions, especially on sloping grassland. Our results suggest that topographical conditions should be incorporated into methods for estimating N2O emission and land management practices in semiarid grassland.
学科主题Environmental Sciences ; Soil Science
出版地HEIDELBERG
电子版国际标准刊号1614-7480
WOS关键词AMMONIA-OXIDIZING ARCHAEA ; INCREASING RATES ; SOIL ; COMMUNITIES ; MANAGEMENT ; DENITRIFICATION ; SHEEP ; NITRIFICATION ; FERTILIZER ; NITRIFIER
语种英语
WOS记录号WOS:000426070100026
出版者SPRINGER HEIDELBERG
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41601245] ; Ministry of Science and Technology of ChinaMinistry of Science and Technology, China [2015BAC02B04]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/20413]  
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Tianjin Univ, China Australia Ctr Sustainable Urban Dev, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China
4.Inner Mongolia Univ, Sch Ecol & Environm, Key Lab Grassland Ecol, Hohhot 010021, Peoples R China
5.East China Normal Univ, Sch Ecol & Environm Sci, Ctr Global Change & Ecol Forecasting, Tiantong Natl Forest Ecosyst Observat & Res Stn, Shanghai 200241, Peoples R China
6.Tianjin Univ, Sch Architecture, Tianjin 300072, Peoples R China
推荐引用方式
GB/T 7714		 Zhong, Lei,Li, Frank Yonghong,Wang, Yanfen,et al. Mowing and topography effects on microorganisms and nitrogen transformation processes responsible for nitrous oxide emissions in semi-arid grassland of Inner Mongolia[J]. JOURNAL OF SOILS AND SEDIMENTS,2018,18(3):929-935.
APA Zhong, Lei.,Li, Frank Yonghong.,Wang, Yanfen.,Zhou, Xiaoqi.,Zhou, Shutong.,...&Bai, Yongfei.(2018).Mowing and topography effects on microorganisms and nitrogen transformation processes responsible for nitrous oxide emissions in semi-arid grassland of Inner Mongolia.JOURNAL OF SOILS AND SEDIMENTS,18(3),929-935.
MLA Zhong, Lei,et al."Mowing and topography effects on microorganisms and nitrogen transformation processes responsible for nitrous oxide emissions in semi-arid grassland of Inner Mongolia".JOURNAL OF SOILS AND SEDIMENTS 18.3(2018):929-935.

入库方式： OAI收割

来源：植物研究所

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