(1) Energy, water vapor and CO2 exchange between land surface and the atmosphere; 

(2) Biogenic sources and sinks of greenhouse gases; 

(3) Crop model; 

(4) The impacts of climate change on carbon and water processes at regional scale.

2004-2009: PhD in ecology, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences;
1993-1996: M. S. in ecology, Institute of Geography, Chinese Academy of Sciences;
1986-1990: B. S. in agronomy, Department of Agronomy, Beijing Agricultural College, China.

2010-2011: Post doctor in hydrology, UNESCO-IHE, Institute for water education, The Netherlands;
2002: Visiting scientist in School of Forestry and Environmental Studies, Yale University;
2001-present: Associate Professor, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences;
1995-2000: Assistant Professor, Institute of Geography, Chinese Academy of Sciences;
1990-1994: Research assistant, Institute of Geography, Chinese Academy of Sciences.

Tong XJ*, Zhang JS, Meng P, Li J, Zheng N. Ecosystem water use efficiency in a warm-temperate mixed plantation in the North China. Journal of Hydrology, 2014, 512: 221-228.
Tong XJ, Li J*, Yu Q, Lin ZH. Biophysical controls on light response of net CO2 exchange over a winter wheat field in the North China Plain. PLoS ONE, 2014, 10.1371/journal.pone.0089469.
Tong XJ, Meng P*, Zhang JS, Li J, Zheng N, Huang H. Ecosystem carbon exchange over a warm-temperate mixed plantation in the lithoid hilly area of the North China. Atmosphere Environment, 2012, 49:257-267.
Li J, Lee X*, Yu Q, Tong XJ, Qin Z, Macdonald B. Contributions of agricultural plants and soils to N2O emission in a farmland. Biogeosciences Discuss. 2011, 8:5505-5535.
Tong XJ, Li J,* Yu Q, Qin Z. Ecosystem water use efficiency in an irrigated cropland in the North China Plain. Journal of Hydrology, 2009, 374(3-4):329-337.
Li J*, Yu Q, Tong XJ. Effect of Plants on CH4 Uptake in a Winter Wheat Field. Proceedings of the 18th International Congress of Biometeorology ‘Harmony within Nature’, Tokyo, Japan, September 2008.
Li J*, Tong XJ, Yu Q, Dong YS, Peng CH. Micrometeorological measurements of nitrous oxide exchange in a cropland. Atmospheric Environment, 2008, 42:6692-7001.
Tong XJ, Li J*, Zhang XS, Yu Q, Qin Z. Zhu ZL. The mechanism and bio-environmental controls on ecosystem respiration in a cropland in North China Plain. New Zealand Journal of Agricultural Research, 2007, 50(5):1347-1358.
Li J*, Yu Q, Sun XM, Tong XJ, Ren CY, Wang J, Liu EM, Zhu ZL, Yu GR. Carbon dioxide exchange and the mechanism of environmental control in a farmland ecosystem in North China Plain. Science in China. Series D, 2006, 49(S2):226-240.
Li J*, Dong YS, Yu HN. Measurement of nitrous oxide exchange on a crop field using micrometeorological method. In: Hocevar, H. et al. eds., Biometeorology, Procedings of the 14th International Congress of Biometeorology. The International Society of Biometeorology. Ljubljana, 1996, p69-83.
(*: Corresponding author)