Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/NGEO2907 |
Globally important nitrous oxide emissions from croplands induced by freeze-thaw cycles | |
Wagner-Riddle, Claudia1; Congreves, Katelyn A.1; Abalos, Diego2; Berg, Aaron A.3; Brown, Shannon E.1; Ambadan, Jaison Thomas3; Gao, Xiaopeng4; Tenuta, Mario4 | |
2017-04-01 | |
发表期刊 | NATURE GEOSCIENCE
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ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2017 |
卷号 | 10期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; Netherlands |
英文摘要 | Seasonal freezing induces large thawemissions of nitrous oxide, a trace gas that contributes to stratospheric ozone destruction and atmospheric warming. Cropland soils are by far the largest anthropogenic source of nitrous oxide. However, the global contribution of seasonal freezing to nitrous oxide emissions from croplands is poorly quantified, mostly due to the lack of year-round measurements and difficulty in capturing short-lived pulses of nitrous oxide with traditional measurement methods. Here we present measurements collected with half-hourly resolution at two contrasting cropland sites in Ontario and Manitoba, Canada, over 14 and 9 years, respectively. We find that the magnitude of freeze-thaw-induced nitrous oxide emissions is related to the number of days with soil temperatures below 0 degrees C, and we validate these findings with emissions data from 11 additional sites from cold climates around the globe. Based on an estimate of cropland area experiencing seasonal freezing, reanalysis model estimates of soil temperature, and the relationship between cumulative soil freezing days and emissions that we derived from the cropland sites, we estimate that seasonally frozen cropland contributes 1.07 +/- 0.59 Tg of nitrogen as nitrous oxide annually. We conclude that neglecting freeze-thaw emissions would lead to an underestimation of global agricultural nitrous oxide emissions by 17 to 28%. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000398162800015 |
WOS关键词 | ANNUAL CROP-ROTATION ; N2O EMISSIONS ; FROZEN SOILS ; PARAMETERIZATION ; FLUXES ; FOREST ; MODEL ; MANIPULATION ; VARIABILITY ; FIELDS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/34744 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ Guelph, Sch Environm Sci, Guelph, ON N1G 2W1, Canada; 2.Wageningen Univ, Dept Soil Qual, POB 47, NL-6700 AA Wageningen, Netherlands; 3.Univ Guelph, Dept Geog, Guelph, ON N1G 2W1, Canada; 4.Univ Manitoba, Dept Soil Sci, Winnipeg, MB R3T 2N2, Canada |
推荐引用方式 GB/T 7714 | Wagner-Riddle, Claudia,Congreves, Katelyn A.,Abalos, Diego,et al. Globally important nitrous oxide emissions from croplands induced by freeze-thaw cycles[J]. NATURE GEOSCIENCE,2017,10(4). |
APA | Wagner-Riddle, Claudia.,Congreves, Katelyn A..,Abalos, Diego.,Berg, Aaron A..,Brown, Shannon E..,...&Tenuta, Mario.(2017).Globally important nitrous oxide emissions from croplands induced by freeze-thaw cycles.NATURE GEOSCIENCE,10(4). |
MLA | Wagner-Riddle, Claudia,et al."Globally important nitrous oxide emissions from croplands induced by freeze-thaw cycles".NATURE GEOSCIENCE 10.4(2017). |
条目包含的文件 | 条目无相关文件。 |
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