Direct N2O emissions from global tea plantations and mitigation potential by climate-smart practices

Estimating N2O emissions from the agricultural sector and developing effective reduction strategies are essential to achieving the Paris Agreement 2 °C target. Based on 3705 observations from 435 articles, we demonstrated that the response of N2O emissions was more sensitive to N inputs on acidic soils than alkaline soils and that climatic factors influence this difference. Total global N2O emissions from tea plantations in the 2010s were estimated to be 46.5 Gg N yr–1 using an exponential model developed herein. Tea plantations are a significant contributor to N2O emissions from the agricultural sector in several countries. The intensity of yield-scale GHG emissions from tea was significantly higher than in other upland cereals. Applying climate-smart practices in Chinese tea plantations could reduce emissions equivalent to one-third of the global total. We conclude that accurate identification of N2O emission hotspots and implementation of targeted measures are essential to achieving global temperature control targets.

Bibliographic Details

Main Authors:	Wang, J., Smith, P., Hergoualc'h, K., Zou, J.
Format:	Journal Article biblioteca
Language:	English
Published:	Elsevier 2022-10
Subjects:	nitrous oxide, greenhouse gases, emissions, agriculture, tea plants,
Online Access:	https://hdl.handle.net/10568/120569 https://doi.org/10.1016/j.resconrec.2022.106501
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