2. Principal: Simulation study on the coupling process of atmosphere-ecology-hydrology in the Loess Plateau (major fund of the Ministry of Education, 2004-2006).
3. Main researcher: The contribution and response of the environmental system in the arid-semi-arid region of East Asia to global climate change in the late Quaternary (National Natural Science Foundation for Distinguished Young Scholars, 200 1-2004).
4. Main researcher: Climatic and chronological significance of paleosols in the last interglacial period on the Loess Plateau (key fund of the Ministry of Education, 200 1-2004).
5. Principal researcher: GIS simulation of hydrology and landscape ecology in the Loess Plateau basin (Key Teacher Fund of the Ministry of Education, 200 1-2004).
6. Principal researcher: Hydrology and landscape ecology research in the Loess Plateau basin (Ministry of Education, 200 1-2003).
7. Principal: Research on Desertification Process and Control in Northern China (973 Project of Ministry of Science and Technology, March 2002).
8. Collaborator: Geomorphological Evolution and Soil and Water Conservation in Loess Plateau (National Natural Science Foundation, 1985- 1987)
9. Principal researcher: Sustainable Development of Loess Plateau (Ministry of Education, 1985- 1987)
10. Participants: Environmental Evolution and Glacier Process in Qinghai-Tibet Plateau (China Academy of Sciences, 1980- 1985).
1 1. Principal investigator: Environmental changes in the Mongolian Plateau since the past 10000 (NGS, USA, 2004-2007).
12. Principal investigator: Geographical differentiation of paleosol in China Loess Plateau during the last interglacial period (NSF, USA, 2000-2003).
13. Principal investigator: The relationship between human beings and environment in Mongolian Plateau since the past 2000 (ngs, USA, 2002-2003).
14. Principal investigator: Late Quaternary sandstorm climate and Gobi dynamics in outer Mongolia (NSF, USA, 1998-2000).
15. Co-researcher: Investigation of geoscience research opportunities in Outer Mongolia (National Natural Science Foundation of the United States, 1996- 1998).
16. Principal Investigator: Application of Geographic Information System in Environmental Science (American Natural Science Foundation, 1998-2000).
17. Co-Principal Investigator: Urban Scale of Global Change-Shanghai International Conference (National Science Foundation, 2003-2004)
18. Co-investigator: Environmental Geographic Information System of the US-Mexico Border (US Environmental Protection Agency, 1994-96)
19. Principal investigator: Geographic Information System and Hydrological Simulation (Montclair University Foundation, 1997- 1999).
20. Main researcher: the history of sandstorm climate in the Midwest of the United States (funded by Columbia University, USA, 1992- 1994).
2 1. Participants: groundwater recharge simulation in the Great Plains of the United States (Geological Bureau of Saskatchewan; 1988- 199 1);