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Estimating fractions of N2O emissions from nitrification and denitrification using data assimilation

文献类型：期刊论文

作者Pan, Baobao1; Huang, Yuanyuan7; Xia, Longlong6; Liang, Junyi5; Liu, Rui4; Luo, Yiqi2; Du, Zhenggang3; Chen, Deli1; Lam, Shu Kee1
刊名BIOGEOCHEMISTRY
出版日期2025-09-05
卷号168期号:5页码:71
关键词Data assimilation N2O production Nitrification Denitrification Model parameter
ISSN号0168-2563
DOI10.1007/s10533-025-01268-x
产权排序2
文献子类Article
英文摘要Nitrous oxide (N2O) emissions play a significant role in global warming and stratospheric ozone depletion. Nitrification and denitrification represent the primary pathways of N2O emissions in agroecosystems. However, modelling the responses of nitrification, denitrification, and subsequent N2O emissions to soil conditions and nitrification inhibitors remains challenging, as the fractions of N2O emissions derived from nitrification and denitrification used in model simulations cannot be directly measured. In this study, we estimated soil nitrification, denitrification, N2O emissions, and their related parameters via data assimilation under various soil moisture levels [water-filled pore space (WFPS) at 50% and 70%], incubation temperature (15, 25 and 35 degrees C) and nitrification inhibitor application (DMPP, 3MPTZ and C2H2) in cereal and vegetable production systems in Australia. We found that the contribution of nitrification to N2O emissions (i.e., the fraction of N2O emitted from nitrification, f(N2O_nit)) decreased with increasing temperature and moisture content, whereas denitrification dominated N2O production (i.e., the fraction of N2O emitted from denitrification, f(N2O_)(dni)) under 70% WFPS regardless of temperatures. Under fertilizer N application, the use of nitrification inhibitors decreased f(N2O_nit) but increased f(N2O_)(dni). The efficacy of nitrification inhibitors in mitigating N2O emissions varied with environmental conditions. In this study, we demonstrate the use of data assimilation to constrain key parameters for predicting nitrification, denitrification and associated N2O emissions in response to soil environments and management practices. Integrating this technique into ecosystem process-based models has the potential to enhance model accuracy by reducing uncertainties and biases.
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WOS关键词SOIL ORGANIC-CARBON ; NITROUS-OXIDE EMISSIONS ; ENHANCED-EFFICIENCY FERTILIZERS ; GREENHOUSE-GAS EMISSION ; AGRICULTURAL SOILS ; INHIBITOR DMPP ; MODEL ; INCUBATION ; DECOMPOSITION ; RESPIRATION
WOS研究方向Environmental Sciences & Ecology ; Geology
语种英语
WOS记录号WOS:001567077200001
出版者SPRINGER
源URL[http://ir.igsnrr.ac.cn/handle/311030/216075]  
专题生态系统网络观测与模拟院重点实验室_外文论文
通讯作者Lam, Shu Kee
作者单位1.Univ Melbourne, Fac Sci, Sch Agr Food & Ecosyst Sci, Parkville, Vic 3010, Australia;
2.Cornell Univ, Sch Integrat Plant Sci, Ithaca, NY 14853 USA;
3.Northeast Forestry Univ, Northeast Asia Ecosyst Carbon Sink Res Ctr NACC, Key Lab Sustainable Forest Ecosyst Management, Ctr Ecol Res,Sch Forestry,Minist Educ, Harbin 150040, Peoples R China
4.China Agr Univ, Coll Resources & Environm Sci, Beijing Key Lab Farmyard Soil Pollut Prevent Contr, Beijing 100193, Peoples R China;
5.China Agr Univ, Coll Grassland Sci & Technol, Dept Grassland Resource & Ecol, Beijing 100193, Peoples R China;
6.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China;
7.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China;
推荐引用方式
GB/T 7714		 Pan, Baobao,Huang, Yuanyuan,Xia, Longlong,et al. Estimating fractions of N2O emissions from nitrification and denitrification using data assimilation[J]. BIOGEOCHEMISTRY,2025,168(5):71.
APA Pan, Baobao.,Huang, Yuanyuan.,Xia, Longlong.,Liang, Junyi.,Liu, Rui.,...&Lam, Shu Kee.(2025).Estimating fractions of N2O emissions from nitrification and denitrification using data assimilation.BIOGEOCHEMISTRY,168(5),71.
MLA Pan, Baobao,et al."Estimating fractions of N2O emissions from nitrification and denitrification using data assimilation".BIOGEOCHEMISTRY 168.5(2025):71.

入库方式： OAI收割

来源：地理科学与资源研究所

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