Climate Change Data Portal
DOI | 10.1016/j.envpol.2019.03.069 |
Impact of 13-years of nitrogen addition on nitrous oxide and methane fluxes and ecosystem respiration in a temperate grassland | |
Chen, Si1; Hao, Tianxiang1; Goulding, Keith2; Misselbrook, Tom3; Liu, Xuejun1 | |
发表日期 | 2019 |
ISSN | 0269-7491 |
EISSN | 1873-6424 |
卷号 | 252页码:675-681 |
英文摘要 | Nitrogen (N) fertilizer application and atmospheric N deposition will profoundly affect greenhouse gas (GHGs) emissions, especially nitrous oxide (N2O) and methane (CH4) fluxes and ecosystem respiration (R-e, i.e. CO2 emissions). However, the impacts of long-term N inputs and the often associated N-induced soil acidification on GHG fluxes in arid and semi-arid ecosystems, especially temperate grasslands, are still uncertain. An in situ experiment was conducted to investigate the effect of long-term (13-years) N addition on N2O and CH4 fluxes and R-e from a temperate grassland in Inner Mongolia, northeast China, from April 2017 to October 2018. Soil pH values in the 0-5 cm layer receiving 120 (N-120) and 240 (N-240) kg N ha(-1) decreased from 7.12 to 4.37 and 4.18, respectively, after 13 years of N inputs. Soil CH4 uptake was significantly reduced, but N2O emission was enhanced significantly by N addition. However, N addition had no impact on R-e. Structural Equation Modeling indicated that soil NH4+-N content was the dominant control of N2O emissions, but with less effect of the decreasing pH. In contrast, CH4 uptake was generally controlled by soil pH and NO3--N content, and R-e by forb biomass. The measured changes in N2O and CH4 fluxes and R-e from temperate grassland will have a profoundly impact on climate change. (C) 2019 Published by Elsevier Ltd. |
WOS研究方向 | Environmental Sciences & Ecology |
来源期刊 | ENVIRONMENTAL POLLUTION |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/102643 |
作者单位 | 1.China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China; 2.Rothamsted Res, Sustainable Agr Sci Dept, Harpenden AL5 2JQ, Herts, England; 3.Rothamsted Res, North Wyke EX20 2SB, Devon, England |
推荐引用方式 GB/T 7714 | Chen, Si,Hao, Tianxiang,Goulding, Keith,et al. Impact of 13-years of nitrogen addition on nitrous oxide and methane fluxes and ecosystem respiration in a temperate grassland[J],2019,252:675-681. |
APA | Chen, Si,Hao, Tianxiang,Goulding, Keith,Misselbrook, Tom,&Liu, Xuejun.(2019).Impact of 13-years of nitrogen addition on nitrous oxide and methane fluxes and ecosystem respiration in a temperate grassland.ENVIRONMENTAL POLLUTION,252,675-681. |
MLA | Chen, Si,et al."Impact of 13-years of nitrogen addition on nitrous oxide and methane fluxes and ecosystem respiration in a temperate grassland".ENVIRONMENTAL POLLUTION 252(2019):675-681. |
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