
Meet Our Team

Kai Cheng, Associate Researcher
Kai Cheng received the B.E. degree in surveying and mapping engineering from the China University of Petroleum, East China, in 2014, the M.S. degree in geodesy and survey engineering from the China University of Mining & Technology, Beijing, in 2017, and the Ph.D. degree in geographic information system from the Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, in 2020.
He is is currently a research associate at the School of Earth and Space Sciences, Peking University. His research focuses on applying remote sensing to describe spatial-temporal pattern of planted forest ecosystem and its ecological effects.

Yu Ren, Associate Researcher
Yu Ren received the B.E. degree in remote sensing science and technology from Chengdu University of Technology, Chengdu, China, in 2015, the M.S. degree in geology from Chengdu University of Technology, Chengdu, China, in 2018, and the Ph.D. degree in cartography and geography information system from Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China, in 2021.
She is currently a research associate at the School of Earth and Space Sciences, Peking University, Beijing, China. Her research focuses on applying geographic information science and remote sensing to understand the terrestrial biodiversity, and some other ecology and agriculture problems.

Ang Chen, Postdoc
Ang Chen received the B.E. degree in Human Geography from Huaqiao University, Fujian, China, in 2017, the M.S. degree in Remote Sensing of Agriculture from Chinese Academy of Agricultural Sciences, Beijing, China, in 2020, and the Ph.D. degree in Grassland Science from Beijing Forestry University, Beijing, China, in 2024.
He is currently a postdoctoral researcher with School of Earth and Space Sciences, Peking University, Beijing, China. His research focuses on applying remote sensing to understand the spatiotemporal change of forest and grassland ecosystem.

Yu Li, Postdoc
Yu Li received the B.S. degree in Geographic Information Science from South China Agricultural University, Guangzhou, China, in 2018, the M.E. degree in Surveying and Mapping Engineering from China University of Geosciences, Beijing, China, in 2021, and the Ph.D. degree in Cartography and Geographic Information System from the Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China, in 2025. He was a visiting Ph.D. student at the University of Washington, Seattle, USA, from 2024 to 2025.
He is currently a postdoctoral researcher at the School of Earth and Space Sciences, Peking University, Beijing, China. His research focuses on validating and improving GEDI-derived canopy cover and leaf area index products, with additional interests in global canopy clumping retrieval using reflectance and lidar data.

Jinyan Tian, Visiting Scholar
Jinyan Tian received his B.S. and Ph.D. degrees in Cartography and Geographic Information System from Capital Normal University, Beijing, in 2011 and 2017, respectively. He is currently an Associate Professor at the College of Resource Environment and Tourism, Capital Normal University.
He is currently a Visiting Scholar at the School of Earth and Space Sciences, Peking University. His research focuses on multi-source remote sensing, particularly LiDAR, combined with deep learning, to quantify forest structural dynamics and their responses to climate change.