My research focuses on observing and understanding two aspects of the Earth system, (1) the structure and functioning of ecosystems; (2) the changes of land-water nexus and their responses to and implications for climate change and carbon cycling. I specialize in remote sensing of land at a range of spatial scales (plot to global, fine to medium resolution), by multiple sensors (multispectral, lidar, radar) on different platforms (ground, airborne and satellite). I have worked on several projects on remote sensing applications funded by different agencies, such as NASA’s MODIS Science Team, USGS’s Landsat Science Team, and Canadian Space Agency.