Global soil‐derived ammonia emissions from agricultural nitrogen fertilizer application: A refinement based on regional and crop‐specific emission factors

Ma, Ruoya; Zou, Jianwen; Han, Zhaoqiang; Yu, Kai; Wu, Shuang; Li, Zhaofu; Niu, Shuli; Horwáth, William R.; Zhu‐Barker, Xia

doi:10.1111/gcb.15437

Cited by 125 publications

(59 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To estimate the relative contribution of China's cropland Nr emissions to the global GTP from agricultural N fertilizer use, we used the data on global cropland Nr emissions that were estimated based on the direct EFs established from two recent worldwide assessments (Liu et al, 2017;Ma et al, 2021). The results showed that China contributed to 33% and 31% of the global croplands GTP 20 and GTP 100 , providing that global croplands GTP 20 and GTP 100 from showing a better agreement with a previous analysis that suggested that climate change could regulate soil N availability via mineralization by soil microorganisms (Liu, Vitousek, et al, 2016;Liu, Wang, et al, 2016).…”

Section: Climate Change Impacts Of Cropland Nr Emissions In Chinamentioning

confidence: 99%

Data‐driven estimates of fertilizer‐induced soil NH₃, NO and N₂O emissions from croplands in China and their climate change impacts

Xiao

et al. 2021

Global Change Biology

Self Cite

View full text Add to dashboard Cite

Gaseous reactive nitrogen (Nr) emissions from agricultural soils to the atmosphere constitute an integral part of global N cycle, directly or indirectly causing climate change impacts. The extensive use of N fertilizer in crop production will compromise our efforts to reduce agricultural Nr emissions in China. A national inventory of fertilizer N-induced gaseous Nr emissions from croplands in China remains to be developed to reveal its role in shaping climate change. Here we present a data-driven estimate of fertilizer N-induced soil Nr emissions based on regional and crop-specific emission factors (EFs) compiled from 379 manipulative studies. In China, agricultural soil Nr emissions from the use of synthetic N fertilizer and manure in 2018 are estimated to be 3.81 and 0.73 Tg N yr −1 , with a combined contribution of 23%, 20% and 15% to the global agricultural emission total of ammonia (NH 3 ), nitrous oxide (N 2 O) and nitric oxide (NO), respectively. Over the past three decades, NH 3 volatilization from croplands has experienced a shift from a rapid increase to a decline trend, whereas N 2 O and NO emissions always maintain a strong growth momentum due to a robust and continuous rise of EFs. Regionally, croplands in Central south (1.51 Tg N yr −1 ) and East (0.99 Tg N yr −1 ) of China exhibit as hotspots of soil Nr emissions. In terms of crop-specific emissions, rice, maize and vegetable show as three leading Nr emitters, together accounting for 61% of synthetic N fertilizer-induced Nr emissions from croplands. The global warming effect derived from cropland N 2 O emissions in China was found to dominate over the local cooling effects of NH 3 and NO emissions. Our established regional and crop-specific EFs for gaseous Nr forms provide a new benchmark for constraining the IPCC Tier 1 default EF values. The spatio-temporal insight into soil Nr emission data from N fertilizer application in our estimate is expected to advance our efforts towards more accurate global or regional cropland Nr emission inventories and effective mitigation strategies. K E Y W O R D S climate change, emission factor, fertilizer, nitrogen use efficiency, reactive nitrogen 1 | INTRODUC TI ON Reactive nitrogen (Nr) into and out of terrestrial ecosystems plays a critical role in global N cycle (Sutton et al., 2013). In general, gaseous Nr emissions have long-lived warming effects from the production of nitrous oxide (N 2 O) and tropospheric ozone (O 3 ), along with short-lived cooling effects by changing tropospheric aerosol, methane (CH 4 ) and O 3 (Galloway et al., 2008). Worldwide rapid growth | 1009 MA et Al.

show abstract

Section: Climate Change Impacts Of Cropland Nr Emissions In Chinamentioning

confidence: 99%

Data‐driven estimates of fertilizer‐induced soil NH₃, NO and N₂O emissions from croplands in China and their climate change impacts

Xiao

et al. 2021

Global Change Biology

Self Cite

View full text Add to dashboard Cite

show abstract

“…As a result, it really depends which soil properties are being used in the application. Therefore, the choice of database and the evaluation of the database depends whether one is studying soil erosion [39], soil salinity [40], ammonia emissions [41], crop growth [42], or Carbon stocks [43] The study confirmed the importance of soil legacy data rescue [44] and global soil profile databases like WoSIS, as well as the necessity of the global soil community to invest in this kind of initiative.…”

Section: Discussionmentioning

confidence: 67%

A Comparison, Validation, and Evaluation of the S-world Global Soil Property Database

Stoorvogel¹,

Mulder²

2021

Land

View full text Add to dashboard Cite

Despite the increased usage of global soil property maps, a proper review of the maps rarely takes place. This study aims to explore the options for such a review with an application for the S-World global soil property database. Global soil organic carbon (SOC) and clay content maps from S-World were studied at two spatial resolutions in three steps. First, a comparative analysis with an ensemble of seven datasets derived from five other global soil databases was done. Second, a validation of S-World was done with independent soil observations from the WoSIS soil profile database. Third, a methodological evaluation of S-world took place by looking at the variation of soil properties per soil type and short distance variability. In the comparative analysis, S-World and the ensemble of other maps show similar spatial patterns. However, the ensemble locally shows large discrepancies (e.g., in boreal regions where typically SOC contents are high and the sampling density is low). Overall, the results show that S-World is not deviating strongly from the model ensemble (91% of the area falls within a 1.5% SOC range in the topsoil). The validation with the WoSIS database showed that S-World was able to capture a large part of the variation (with, e.g., a root mean square difference of 1.7% for SOC in the topsoil and a mean difference of 1.2%). Finally, the methodological evaluation revealed that estimates of the ranges of soil properties for the different soil types can be improved by using the larger WoSIS database. It is concluded that the review through the comparison, validation, and evaluation provides a good overview of the strengths and the weaknesses of S-World. The three approaches to review the database each provide specific insights regarding the quality of the database. Specific evaluation criteria for an application will determine whether S-World is a suitable soil database for use in global environmental studies.

show abstract

“…A clearer picture can be derived about the interplay of stomatal (Geßler et al, 2002) and non-stomatal pathways (Schrader et al, 2016), the exchange between soil and the atmosphere, seasonal site-specific conditions, e.g., through vegetation senescence and decomposition of fallen leaves (Hansen et al, 2013) or periods of elevated evaporation from either water droplets on leaves (Hales and Drewes, 1979) or whole water bodies. Furthermore, although not presented in this study, short-term temporal dynamics of Nr after field management like crop or grassland fertilization usually leading to immediate emission peaks (Martins et al, 2017) can be used for better quantification of nitrogen losses to the atmosphere (Brümmer et al, 2013;Ma et al, 2020).…”

Section: Improving Process Understanding Through High Temporal Resolutionmentioning

confidence: 99%

Reactive nitrogen fluxes over peatland and forest ecosystems using micrometeorological measurement techniques

Brümmer¹,

Rüffer²,

Delorme³

et al. 2021

Preprint

View full text Add to dashboard Cite

Abstract. Interactions of reactive nitrogen (Nr) compounds between the atmosphere and the earth's surface play a key role in atmospheric chemistry and in understanding nutrient cycling of terrestrial ecosystems. While continuous observations of inert greenhouse gases through micrometeorological flux measurements have become a common procedure, information about temporal dynamics and longer-term budgets of Nr compounds is still extremely limited. Within the framework of the research projects NITROSPHERE and FORESTFLUX, field campaigns were carried out to investigate the biosphere-atmosphere exchange of selected Nr compounds over different land surfaces. The aim of the campaigns was to test and establish novel measurement techniques in eddy-covariance setups for continuous determination of surface fluxes of ammonia (NH3) and total reactive nitrogen (∑Nr) using two different analytical devices. While high-frequency measurements of NH3 were conducted with a quantum cascade laser (QCL) absorption spectrometer, a custom-built converter called Total Reactive Atmospheric Nitrogen Converter (TRANC) connected and operated upstream of a chemiluminescence detector (CLD) was used for the measurement of ∑Nr. As high-resolution data of Nr surface-atmosphere exchange are still scarce, but highly desired for testing and validating local inferential and larger scale models, we provide access to campaign data including concentrations, fluxes, and ancillary measurements of meteorological parameters. Campaigns (n = 4) were carried out in natural (forest) and semi-natural (peatland) ecosystem types. The published datasets stress the importance of recent advancements in laser spectrometry and help improve our understanding of the temporal variability of surface-atmosphere exchange in different ecosystems, thereby providing validation opportunities for inferential models simulating the exchange of reactive nitrogen. The dataset has been placed in the Zenodo repository (http://doi.org/10.5281/zenodo.4513854; Brümmer et al., 2021) and contains individual data files for each campaign.

show abstract

Global soil‐derived ammonia emissions from agricultural nitrogen fertilizer application: A refinement based on regional and crop‐specific emission factors

Cited by 125 publications

References 52 publications

Data‐driven estimates of fertilizer‐induced soil NH₃, NO and N₂O emissions from croplands in China and their climate change impacts

Data‐driven estimates of fertilizer‐induced soil NH₃, NO and N₂O emissions from croplands in China and their climate change impacts

A Comparison, Validation, and Evaluation of the S-world Global Soil Property Database

Reactive nitrogen fluxes over peatland and forest ecosystems using micrometeorological measurement techniques

Contact Info

Product

Resources

About

Global soil‐derived ammonia emissions from agricultural nitrogen fertilizer application: A refinement based on regional and crop‐specific emission factors

Cited by 125 publications

References 52 publications

Data‐driven estimates of fertilizer‐induced soil NH3, NO and N2O emissions from croplands in China and their climate change impacts

Data‐driven estimates of fertilizer‐induced soil NH3, NO and N2O emissions from croplands in China and their climate change impacts

A Comparison, Validation, and Evaluation of the S-world Global Soil Property Database

Reactive nitrogen fluxes over peatland and forest ecosystems using micrometeorological measurement techniques

Contact Info

Product

Resources

About

Data‐driven estimates of fertilizer‐induced soil NH₃, NO and N₂O emissions from croplands in China and their climate change impacts

Data‐driven estimates of fertilizer‐induced soil NH₃, NO and N₂O emissions from croplands in China and their climate change impacts