Simulated Yak and Tibetan Sheep Urine Deposition Fleetingly Promoted N2O, CO2 and CH4 Emissions in an Alpine Steppe of Northern Xizang Plateau

Summary

This 2024 field study examined how simulated urine deposition from yak and Tibetan sheep affects greenhouse gas emissions on the alpine steppe of the northern Xizang Plateau. The research measured N2O, CO2 and CH4 fluxes following urine application, finding transient emission increases, as suggested by the title. The work contributes to understanding pastoral livestock's role in regional greenhouse gas dynamics under high-altitude grazing conditions.

UK applicability

Direct applicability to UK pastoral systems is limited, as the study focuses on alpine steppe conditions and indigenous Tibetan livestock breeds in a distinct climatic and edaphic context. However, the methodological approach to quantifying livestock urine-derived emissions may inform UK grassland management and climate impact assessments of upland grazing systems.

Key measures

N2O, CO2 and CH4 emissions (gas fluxes); temporal emission patterns following urine application to alpine steppe soil

Outcomes reported

The study measured nitrous oxide (N2O), carbon dioxide (CO2) and methane (CH4) emissions following simulated urine deposition from yak and Tibetan sheep on alpine steppe soils. Emissions patterns and temporal dynamics were characterised across the study period.

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