Global evaluation of inhibitor impacts on ammonia and nitrous oxide emissions from agricultural soils: A meta-analysis

文献类型： 外文期刊

第一作者： Fan, Daijia

作者： Fan, Daijia;He, Wentian;Shi, Yaoyao;Song, Daping;Chen, Yanhua;Wang, Xuexia;Zou, Guoyuan;Smith, Ward N.;Grant, Brian B.;Drury, Craig F.;Jiang, Rong;He, Ping

作者机构：

关键词： ammonia volatilization; environmental condition; management practice; nitrification inhibitor; nitrous oxide emission; urease inhibitor

期刊名称：GLOBAL CHANGE BIOLOGY （ 影响因子：13.211； 五年影响因子：13.111 ）

ISSN： 1354-1013

年卷期： 2022 年 28 卷 17 期

页码：

收录情况： SCI

摘要： Inhibitors are widely considered an efficient tool for reducing nitrogen (N) loss and improving N use efficiency, but their effectiveness is highly variable across agroecosystems. In this study, we synthesized 182 studies (222 sites) worldwide to evaluate the impacts of inhibitors (urease inhibitors [UI], nitrification inhibitors [NI] and combined inhibitors) on crop yields and gaseous N loss (ammonia [NH3] and nitrous oxide [N2O] emissions) and explored their responses to different management and environmental factors including inhibitor application timing, fertilization regime, cropping system, water management, soil properties and climatic conditions using subgroup meta-analysis, meta-regression and multivariate analyses. The UI were most effective in enhancing crop yields (by 5%) and reducing NH3 volatilization (by 51%), whereas NI were most effective at reducing N2O emissions (by 49%). The application of UI mitigates NH3 loss and increases crop yields especially in high NH3-N loss scenarios, whereas NI application would minimize the net N2O emissions and the resultant environmental impacts especially in low NH3-N loss scenarios. Alternatively, the combined application of UI and NI enables producers to balance crop production and environmental conservation goals without pollution tradeoffs. The inhibitor efficacy for decreasing gaseous N loss was dependent upon soil and climatic conditions and management practices. Notably, both meta-regression and multivariate analyses suggest that inhibitors provide a greater opportunity for reducing fertilizer N inputs in high-N-surplus systems and presumably favor crop yield enhancement under soil N deficiency situations. The pursuit of an improved understanding of the interactions between plant-soil-climate-management systems and different types of inhibitors should continue to optimize the effectiveness of inhibitors for reducing environmental losses while increasing productivity.

分类号：

  • 相关文献

[1]Global evaluation of inhibitor impacts on ammonia and nitrous oxide emissions from agricultural soils: A meta-analysis. Fan, Daijia,He, Wentian,Shi, Yaoyao,Song, Daping,Chen, Yanhua,Wang, Xuexia,Zou, Guoyuan,Smith, Ward N.,Grant, Brian B.,Drury, Craig F.,Jiang, Rong,He, Ping. 2022

作者其他论文 更多>>

微信小程序