Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15874 |
Climate change may interact with nitrogen fertilizer management leading to different ammonia loss in China’s croplands | |
Xiangrui Xu; Xiao Ouyang; Yining Gu; Kun Cheng; Pete Smith; Jianfei Sun; Yunpeng Li; Genxing Pan | |
2021-09-12 | |
发表期刊 | Global Change Biology |
出版年 | 2021 |
英文摘要 | Despite research into the response of ammonia (NH3) volatilization in farmland to various meteorological factors, the potential impact of future climate change on NH3 volatilization is not fully understood. Based on a database consisting of 1063 observations across China, nonlinear NH3 models considering crop type, meteorological, soil and management variables were established via four machine learning methods, including support vector machine, multi-layer perceptron, gradient boosting machine and random forest (RF). The RF model had the highest R2 of 0.76 and the lowest RMSE of 0.82 kg NH3-N ha−1, showing the best simulation capability. Results of model importance indicated that NH3 volatilization was mainly controlled by total input of N fertilizer, followed by meteorological factors, human managements and soil characteristics. The NH3 emissions of China's cereal production (paddy rice, wheat and maize) in 2018 was estimated to be 3.3 Mt NH3-N. By 2050, NH3 volatilization will increase by 23.1−32.0% under different climate change scenarios (Representative Concentration Pathways, RCPs), and climate change will have the greatest impact on NH3 volatilization in the Yangtze river agro-region of China due to high warming effects. However, the potential increase in NH3 volatilization under future climate change can be mitigated by 26.1−47.5% through various N fertilizer management optimization options. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
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/337553 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Xiangrui Xu,Xiao Ouyang,Yining Gu,等. Climate change may interact with nitrogen fertilizer management leading to different ammonia loss in China’s croplands[J]. Global Change Biology,2021. |
APA | Xiangrui Xu.,Xiao Ouyang.,Yining Gu.,Kun Cheng.,Pete Smith.,...&Genxing Pan.(2021).Climate change may interact with nitrogen fertilizer management leading to different ammonia loss in China’s croplands.Global Change Biology. |
MLA | Xiangrui Xu,et al."Climate change may interact with nitrogen fertilizer management leading to different ammonia loss in China’s croplands".Global Change Biology (2021). |
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