Date & Time: 10:30 – 11:30, May 29 (Friday), 2026
Venue: Lecture Hall 601, School of Earth System Science, Tianjin University
Speaker: Lei Liu, Research Professor, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences
Host: Professor Peng XU , School of Earth System Science, Tianjin University
Abstract
Meeting the national strategic demand for green agricultural development in China, this talk addresses the long-standing coordination dilemma between the rigid requirement of food security expansion and the rigid constraints of environmental protection. Focusing on the cutting-edge issue of whole-chain environmental effects of nitrogen across the "input-emission-deposition-loss process in agricultural production systems, Professor Liu integrates remote sensing technology, geospatial analysis and agricultural nitrogen environmental effect research to reveal the interaction mechanism between human activities and the natural environment from a regional agricultural system perspective. Key research progresses include: (1) constructing a global ammonia emission inventory for agricultural and pastoral systems, and quantifying the impacts of socioeconomic driving forces shaping global agricultural production patterns; (2) developing a high-precision nitrogen deposition model based on satellite remote sensing observations, and characterizing the spatio-temporal pattern and underlying driving mechanisms of terrestrial nitrogen sinks; (3) uncovering the contribution of agricultural ammonia emission, atmospheric transport and deposition processes on coastal marine nitrogen input, which advances our understanding of the spatio-temporal characteristics of nutrient enrichment in aquatic systems.
About the Speaker
Lei Liu is a Research Professor at the Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences. He is the recipient of the National Outstanding Youth Fund from the National Natural Science Foundation of China, and the Jiangsu Provincial Outstanding Youth Fund. His research focuses on fundamental frontier research in biogeochemical cycles and global change.
Professor Liu has published over 60 peer-reviewed publications, with more than 30 papers as first or corresponding author in top-tier journals including Nature (Commentary), *Proceedings of the National Academy of Sciences, Nature Geoscience, Nature Plants, Nature Food, and Nature Communications. Multiple of his papers are selected as ESI Top 1% Highly Cited Papers, and he has been named a Clarivate Highly Cited Researcher (Cross-Field, Top 1%). His work was selected as one of the Top ¹ Top 10 Scientific Advances in Nitrogen Cycle Research. He is the recipient of the Li Xiaowen Young Scientist Award in Remote Sensing Science, and his doctoral dissertation was awarded the Outstanding Doctoral Dissertation of Jiangsu Province. He currently serves as Associate Editor for two SCI journals, and holds committee memberships including:
Committee Member, Quantitative Remote Sensing Professional Committee, China Association of Remote Sensing Applications
Committee Member, Nitrogen Working Group, Chinese Society of Soil Science
Committee Member, Chinese National Committee for the International Society for Digital Earth
All interested faculty, students and researchers are welcome to attend!
