ABSTRACT

Emissions of ammonia (NH₃), oxides of nitrogen (NO_x; NO +NO₂), and nitrous oxide (N₂O) from biomass burning were quantified on a global scale for 2001 to 2015. On average biomass burning emissions at a global scale over the period were as follows: 4.53 ± 0.51 Tg NH₃ year⁻¹, 14.65 ± 1.60 Tg NO_x year⁻¹, and 0.97 ± 0.11 Tg N₂O year⁻¹. Emissions were comparable to other emissions databases. Statistical regression models were developed to project NH₃, NO_x, and N₂O emissions from biomass burning as a function of burn area. Two future climate scenarios (RCP 4.5 and RCP 8.5) were analyzed for 2050–2055 (“mid-century”) and 2090–2095 (“end of century”). Under the assumptions made in this study, the results indicate emissions of all species are projected to increase under both the RCP 4.5 and RCP 8.5 climate scenarios.

Implications: This manuscript quantifies emissions of NH₃, NO_x, and N₂O on a global scale from biomass burning from 2001–2015 then creates regression models to predict emissions based on climate change. Because reactive nitrogen emissions have such an important role in the global nitrogen cycle, changes in these emissions could lead to a number of health and environmental impacts.

摘要

2001 年至 2015 年，生物质燃烧产生的氨 (NH ₃ )、氮氧化物 (NO _x；NO +NO ₂ ) 和一氧化二氮 (N ₂ O) 的排放在全球范围内进行了量化。平均而言，生物质燃烧排放量为该期间的全球尺度如下：4.53±0.51 Tg NH ₃ year ^-1、14.65±1.60 Tg NO _x year ^-1和0.97 ± 0.11 Tg N ₂ O year ^-1。排放量与其他排放量数据库相当。开发了统计回归模型来预测 NH ₃、NO _x和 N ₂生物质燃烧产生的 O 排放作为燃烧面积的函数。分析了 2050-2055（“世纪中叶”）和 2090-2095（“世纪末”）的两种未来气候情景（RCP 4.5 和 RCP 8.5）。根据本研究所做的假设，结果表明，在 RCP 4.5 和 RCP 8.5 气候情景下，所有物种的排放量预计都会增加。

影响：本手稿量化了 2001 年至 2015 年生物质燃烧产生的全球范围内 NH ₃、NO _x和 N ₂ O 的排放量，然后创建回归模型以根据气候变化预测排放量。由于活性氮排放在全球氮循环中具有如此重要的作用，这些排放的变化可能会导致许多健康和环境影响。