The spatial variation and drivers of soil δ13C in an alpine-gorge region on the eastern Qinghai-Tibetan Plateau

Summary

This 2024 field survey characterised spatial variation in soil carbon isotope composition (δ13C) across an alpine-gorge region on the eastern Qinghai-Tibetan Plateau, using stable isotope signatures to infer carbon sources and soil cycling dynamics. The work demonstrates how fine-scale topography—slope aspect, altitude, and terrain geometry—structures soil carbon processes in high-altitude mountain ecosystems. The findings are specific to alpine-gorge terrain and high-altitude contexts; direct transferability to lower-altitude agricultural regions or non-plateau landscapes is likely limited.

Regional applicability

This study addresses alpine-gorge ecosystems on the Qinghai-Tibetan Plateau and is of limited direct application to United Kingdom farming or soil management contexts. However, the methodological approach using δ13C as a tracer of soil carbon sources and the role of topography in structuring soil processes may have transferable value for UK upland or mountainous soils research.

Key measures

Soil δ13C (stable carbon isotope composition), topographic variables (slope aspect, altitude, terrain geometry), carbon source attribution

Outcomes reported

The study characterised spatial variation in soil δ13C signatures across an alpine-gorge region on the eastern Qinghai-Tibetan Plateau. The research inferred how fine-scale topography (slope aspect, altitude, terrain geometry) structures soil carbon sources and cycling dynamics in high-altitude mountain ecosystems.

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