Welcome to Xia’s Soil Systems Research Group!

The Soil Systems Lab at Columbia University

The Soil Systems Lab at Lamont-Doherty Earth Observatory (LDEO) aims to leverage process and empirical modeling tools with multi-scale data sources, including field and lab measurements, survey and literature data, and remote sensing imagery, to monitor soil fertility, greenhouse gas emissions, soil water and nutrient dynamics, and ecosystem productivity across various spatial and temporal scales. Our research team primarily focuses on evaluating and advancing natural climate solutions by investigating the influence of environmental drivers, land use changes, and management practices on soil health and the associated ecosystem service outcomes in terrestrial ecosystems. The overarching goal of our research group is to tackle challenges related to environmental sustainability, climate change, and food security.

  • Soil ecology/ Agroecology

  • Soil health/ Dynamic soil property assessment

  • Regenerative/ Conservation agricultural practices (e.g., cover cropping, organic farming, rotational cropping and grazing)

  • Rangeland management

  • Soil biogeochemistry

  • Nitrogen cycling

  • Soil fertility

  • Soil moisture/ Hydrological processes

  • Carbon management and carbon sequestration

  • Greenhouse gas emissions

  • Natural climate solutions (nature-based solutions)

  • Strategic sampling design

Research themes

  • Field sampling

  • Lab measurements

  • Process-based modeling/ Ecosystem modeling

  • Digital soil mapping

  • Applied spectroscopy

  • Remote sensing applications in agricultural and environmental research

  • Machine learning/ Artificial Intelligence

  • High-performance computing

  • Meta-analysis/ Data mining

  • Decision support tools

  • Environmental informatics

  • Stakeholder engagement

Research approach and tools

Interested in the research themes and the approach outlined above?

Consider joining Xia’s Soil Systems Lab at LDEO at Columbia University! Prospective postdocs, graduate students, and visiting students are encouraged to explore the Opportunities tab for further information.