Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13966 |
Soil pH as the chief modifier for regional nitrous oxide emissions: New evidence and implications for global estimates and mitigation | |
Wang, Yajing1; Guo, Jingheng1; Vogt, Rolf David2; Mulder, Jan3; Wang, Jingguo1; Zhang, Xiaoshan4 | |
2018-02-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:2页码:E617-E626 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Norway |
英文摘要 | Nitrous oxide (N2O) is a greenhouse gas that also plays the primary role in stratospheric ozone depletion. The use of nitrogen fertilizers is known as the major reason for atmospheric N2O increase. Empirical bottom-up models therefore estimate agricultural N2O inventories using N loading as the sole predictor, disregarding the regional heterogeneities in soil inherent response to external N loading. Several environmental factors have been found to influence the response in soil N2O emission to N fertilization, but their interdependence and relative importance have not been addressed properly. Here, we show that soil pH is the chief factor explaining regional disparities in N2O emission, using a global meta-analysis of 1,104 field measurements. The emission factor (EF) of N2O increases significantly (p < .001) with soil pH decrease. The default EF value of 1.0%, according to IPCC (Intergovernmental Panelon Climate Change) for agricultural soils, occurs at soil pH 6.76. Moreover, changes in EF with N fertilization (i.e. EF) is also negatively correlated (p < .001) with soil pH. This indicates that N2O emission in acidic soils is more sensitive to changing N fertilization than that in alkaline soils. Incorporating our findings into bottom-up models has significant consequences for regional and global N2O emission inventories and reconciling them with those from top-down models. Moreover, our results allow region-specific development of tailor-made N2O mitigation measures in agriculture. |
英文关键词 | emission factor environmental factors greenhouse gas estimate and mitigation global meta-analysis nitrous oxide nonlinearity coefficient soil pH |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000423994700020 |
WOS关键词 | N2O EMISSIONS ; FERTILIZER NITROGEN ; NITRIC-OXIDE ; DENITRIFICATION ; ACIDIFICATION ; AGRICULTURE ; CARBON ; CHINA ; NO ; OPPORTUNITIES |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
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/17212 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.China Agr Univ, Coll Resources & Environm Sci, Beijing Key Lab Farmland Soil Pollut Prevent & Re, Beijing, Peoples R China; 2.Univ Oslo, Dept Chem, Oslo, Norway; 3.Norwegian Univ Life Sci, Fac Environm Sci & Nat Resource Management, As, Norway; 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Yajing,Guo, Jingheng,Vogt, Rolf David,et al. Soil pH as the chief modifier for regional nitrous oxide emissions: New evidence and implications for global estimates and mitigation[J]. GLOBAL CHANGE BIOLOGY,2018,24(2):E617-E626. |
APA | Wang, Yajing,Guo, Jingheng,Vogt, Rolf David,Mulder, Jan,Wang, Jingguo,&Zhang, Xiaoshan.(2018).Soil pH as the chief modifier for regional nitrous oxide emissions: New evidence and implications for global estimates and mitigation.GLOBAL CHANGE BIOLOGY,24(2),E617-E626. |
MLA | Wang, Yajing,et al."Soil pH as the chief modifier for regional nitrous oxide emissions: New evidence and implications for global estimates and mitigation".GLOBAL CHANGE BIOLOGY 24.2(2018):E617-E626. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论