
Dr Yiming Zhang
BSc, PhD
Expertise
I study the peatland carbon cycle, exploring biogeochemical processes and the fate of different forms of carbon in modern and past peatlands.
Current positions
Senior Research Associate
School of Earth Sciences
Contact
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Biography
I was born and raised in a small coastal city in eastern China, Rizhao, whose Chinese name means 'sunshine'. This early connection to coastal and wetland environments sparked my interest in Earth surface processes and environmental change. From secondary school onwards, I began reading widely in popular science books on geography, geology, Earth evolution, and astronomy, which further deepened my curiosity about the Earth system. I studied Geology at China University of Geosciences (Wuhan) from 2011 to 2015, where I obtained my BSc degree. I then continued at the same university for an integrated MSc–PhD programme and completed my PhD in 2022.
During my doctoral research, I focused on peatland environments and carbon cycling, combining field monitoring and laboratory analyses. This included measurements of water table dynamics, porewater chemistry, nutrients, dissolved organic carbon, and greenhouse gas fluxes (CO2 and CH4). At the same time, I developed expertise in organic geochemistry, including lipid biomarker extraction, gas chromatography–mass spectrometry (GC–MS), and isotope ratio mass spectrometry (IRMS) analysis. I applied compound-specific carbon and hydrogen isotope compositions of lipid biomarkers to investigate microbial processes in both modern and past peatland systems, linking these to environmental change and carbon cycling.
Following my PhD, I continued as a postdoctoral researcher at China University of Geosciences (2022–2024), where I further developed compound-specific radiocarbon techniques and helped to establish an accelerator mass spectrometry (MICADAS) facility. In 2024, I joined the University of Bristol as a Senior Research Associate, as part of the OGU and CERES research teams. My current research focuses on understanding microbial controls on carbon cycling and climate–carbon feedbacks across modern and geological timescales.
During my doctoral research, I focused on peatland environments and carbon cycling, combining field monitoring and laboratory analyses. This included measurements of water table dynamics, porewater chemistry, nutrients, dissolved organic carbon, and greenhouse gas fluxes (CO2 and CH4). At the same time, I developed expertise in organic geochemistry, including lipid biomarker extraction, gas chromatography–mass spectrometry (GC–MS), and isotope ratio mass spectrometry (IRMS) analysis. I applied compound-specific carbon and hydrogen isotope compositions of lipid biomarkers to investigate microbial processes in both modern and past peatland systems, linking these to environmental change and carbon cycling.
Following my PhD, I continued as a postdoctoral researcher at China University of Geosciences (2022–2024), where I further developed compound-specific radiocarbon techniques and helped to establish an accelerator mass spectrometry (MICADAS) facility. In 2024, I joined the University of Bristol as a Senior Research Associate, as part of the OGU and CERES research teams. My current research focuses on understanding microbial controls on carbon cycling and climate–carbon feedbacks across modern and geological timescales.
Research interests
peatland carbon cycle, peat microbial metabolism, peat lipid biomarkers, lipid carbon and hydrogen isotope compositions, peatland dissolved organic carbon, peatland methane fluxes, peatland development
Publications
Selected publications
15/01/2024The stable carbon and hydrogen isotopic composition of microbial fatty acids traces microbial metabolism in soils and peats
Geochimica et Cosmochimica Acta
Recent publications
01/04/2026Evolution of the primary productivity recovery at the Cretaceous-Paleogene boundary at the Caravaca distal section (Spain)
Global and Planetary Change
High-efficiency methane consumption by atmospheric methanotrophs in subsurface karst caves
Science Advances
Fluctuations of Water Table Level in a Subtropical Peatland, Central China
Journal of Earth Science
Microbial responses to changing plant community protect peatland carbon stores during Holocene drying
Nature Communications
Quantifying Relative Contribution of Submerged Macrophytes to Sedimentary Organic Matter Using Concentrations and δ13C of n-Alkanes With the Bayesian Multi-Source Mixing Model
Journal of Geophysical Research: Biogeosciences



