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

Jinyang Wang*, Pete Smith, Kristell Hergoualc'h, Jianwen Zou

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number106501
JournalResources, Conservation and Recycling
Volume185
Early online date1 Jul 2022
DOIs
Publication statusPublished - Oct 2022

Keywords

  • Climate-smart agriculture
  • GHGI
  • Greenhouse gas
  • Management practice
  • Mitigation options
  • N use efficiency

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