Summary
This field trial investigated how elevated temperature and fertiliser application affect two major pathways of nitrogen loss from flooded rice paddies: N₂O emissions and NH₃ volatilisation. The authors appear to demonstrate interactive effects between warming and nitrogen fertilisation on these gaseous losses, contributing to understanding of how climate change and agronomic management jointly influence greenhouse gas and air pollutant release from a globally important staple crop system. The findings suggest that adaptation of fertiliser strategies may be necessary under warming scenarios to mitigate environmental impacts.
UK applicability
UK rice production is negligible, and UK climate differs substantially from the subtropical/temperate paddy conditions studied. However, the mechanistic understanding of how warming alters nitrogen cycling and gaseous losses may inform UK strategies for reducing N₂O emissions from other arable systems and nitrogen management policies aligned with climate change projections.
Key measures
N₂O emissions (measured as greenhouse gas flux), ammonia volatilisation rates, soil temperature, soil moisture, nitrogen fertiliser application rates
Outcomes reported
The study examined nitrous oxide (N₂O) emissions and ammonia (NH₃) volatilisation from paddy rice systems under simulated warming conditions and varying fertilisation regimes. Measurements quantified how climate change and nutrient management practices interact to influence gaseous nitrogen losses.
Topic tags
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