2024-	        Full Professor, Lanzhou University 
2019-2024	Research Professor (Scientist), Lanzhou University
2017-2018    	Boston University, Visiting scholar 
2014-2019	Nanjing University, Ph.D. 
2010-2014	Henan University of Urban Construction, B.Sc. 

Research Focus: Agricultural modeling, global environmental change, carbon and nitrogen cycles, sustainable development, environmental remote sensing, etc. Published papers as first/corresponding author in journals including Nature, PNAS, Nature Geoscience, Nature Food, ES&T, RSE, ACP, JGR, and others.

Atmospheric remote sensing 
Frontier Progress in Geography
Scientific literature reading and writing

2022 – Associate editor, Frontiers in Environmental Science
2023 – Member of the Committee on Quantitative Remote Sensing, China Association of Remote Sensing Applications

Media / Public Relations
1)	July 2024, Nature Geoscience:
Title: Explore the dynamics of atmospheric nitrogen deposition in China over the past decade, https://mp.weixin.qq.com/s/2ZUK_rV9Y1TzibbtByGf-g 
2)	April 2023, PNAS:
Title: Impact of agricultural ammonia emissions on the spatiotemporal patterns of nitrogen deposition in marine areas. https://news.lzu.edu.cn/c/202304/99439.html
https://mp.weixin.qq.com/s/ToURnzylz8jQuU09tlhABQ
3)	September 2023, Nature:
Title: Impact of urbanization on agricultural production patterns in China.
https://mp.weixin.qq.com/s/fPH2zSmrD_irAAZLo5Gayg
4)	November 2023, Nature Food:
Title: Impact of extreme weather events on agricultural production in China. https://news.cau.edu.cn/kxyj/7510baeed91e442aa5930c4da09688e6.htm
5)	March 2022, PNAS:
Title: Sources and contributions of agricultural ammonia emissions https://news.lzu.edu.cn/c/202203/88520.html
6)	January 2024, Science of the Total Environment:
Title: High-precision estimation methods and emission reduction strategies for agricultural ammonia emission factors. https://mp.weixin.qq.com/s/RKQZSOJRNBdSSvMJdVKn1w

Awards
2023	Highly Cited Researcher in the field of Cross-Field, top 1%
2023	Young Faculty Award for Scientific Research and Innovation, Lanzhou University 
2020 	Excellent doctoral thesis of Jiangsu Province, China
2020	Excellent doctoral thesis of Nanjing University
2019	Li Xiaowen Satellite Youth Award
2018	National Doctoral Scholarship (rank the first)
2018	First Level School Scholarship
2017	Haihang Scholarship
2017	First Prize School Scholarship
2016	National Doctoral Scholarship (rank the first)
2015	Excellent Graduate Students 
2015	Excellent Communist Youth League Members
2015        First Prize in Doctoral Forum on Remote Sensing 
2015	First Level GuangHua Scholarship
2015	First Prize of Graduate Forum, Meeting of Jiangsu Geographic Society
2014	First Prize in School Scholarship and Merit Student Award

2024	Coupled Meteorological Satellite Data and Three-dimensional Atmospheric Transport Process for Optimized Calculation Method of Reduced Nitrogen Deposition, National Natural Science Foundation General Program, 2024-2027, Principal Investigator.
2021	Construction and demonstration of an innovative model for the coordination of high-quality agricultural development and non-point source pollution prevention and control in the Erhai Lake basin, Yunnan Provincial Department of Science and Technology, 2021-2024
2021	Satellite-based estimation of ammonia dry ammonia deposition considering bidirectional exchange process, National Natural Science Foundation of China, 42001347, 2021-2023, Principal Investigator.
2020	Nitrogen deposition estimates by satellite approach (PI), Lanzhou University Free Exploration Program, 2019-2022
2020	Technical cooperation project of ecosystem verification and observation of ecological status changes in Gansu Province, 2020-2021
2016	Simulation of atmospheric sulfur deposition and demand for agricultural sulfur fertilizer in China based on satellite remote sensing (PI); Research Innovation Fund for Doctoral Students of Nanjing University, 2016-2018
2016	Remote sensing monitoring and Simulation of atmospheric sulfur deposition in China (PI); Cooperative Innovation Project for Doctoral Students in Jiangsu Province, 2016-2018
2014	Remote sensing monitoring and simulation of the effects of nitrogen deposition on methane emissions from paddy fields in southern China (Participant); National Natural Science Foundation of China, 2014-2018

Publications
*Corresponding author; #These authors contributed equally to this work
2024 (3)
1)	Lei Liu*#, Zhang Wen#, Sheng Liu#, Xiuying Zhang#, Xuejun Liu*# Decline in atmospheric nitrogen deposition in China between 2010 and 2020. Nature Geoscience, 2024, https://www.nature.com/articles/s41561-024-01484-4 
2)	Hang Xu, Sheng Liu, Jia Ding, Jiani Wang, Lei Liu*, Mapping crop-specific emission factors highlights hotspots of ammonia mitigation in China, Science of The Total Environment, 2024, 168157, https://doi.org/10.1016/j.scitotenv.2023.168157
3)	Zhang Wen#, Xin Ma#, Wen Xu#, Ruotong Si, Lei Liu, Mingrui Ma, Yuanhong Zhao, Aohan Tang, Yangyang Zhang, Kai Wang, Ying Zhang, Jianlin Shen, Lin Zhang, Yu Zhao, Fusuo Zhang, Keith Goulding, Xuejun Liu* Nature Communications 2024, 15, 5169, https://www.nature.com/articles/s41467-024-49539-9 
2023 (3)
1)	Lei Liu*, Wen Xu, Zhang Wen, Pu Liu, Hang Xu, Sheng Liu, Xiankai Lu, Buqing Zhong, Yixin Guo, Xiao Lu, Yuanhong Zhao, Xiuying Zhang, Songhan Wang, Peter M. Vitousek, Xuejun Liu*, 2023. Modeling global oceanic nitrogen deposition from food systems and its mitigation potential by reducing overuse of fertilizers, PNAS, 120, e2221459120
2)	Lei Liu*, Hang Xu, Sheng Liu, Xuejun Liu. 2023 China’s response to extreme weather events must be long-term. Nature food, 4, 1022-1023
3)	Lei Liu*. 2023 Urbanization is reshaping food production in China. Nature, 621, 42, https://doi.org/10.1038/d41586-023-02753-9
2022 (6)
1)	Lei Liu*, Wen Xu, Xiankai Lu, Buqing Zhong, Yixin Guo, Xiao Lu, Yuanhong Zhao, Wei He, Songhan Wang, Xiuying Zhang, Xuejun Liu*, Peter Vitousek, 2022. Exploring global changes in agricultural ammonia emissions and their contribution to nitrogen deposition since 1980, PNAS, 119, e2121998119. https://doi.org/10.1073/pnas.2121998119 (ESI Highly Cited Paper)
2)	Pu Liu, Jia Ding, Lei Liu*, Wen Xu, and Xuejun Liu, 2022, Estimation of surface ammonia concentrations and emissions in China from the polar-orbiting Infrared Atmospheric Sounding Interferometer and the FY-4A Geostationary Interferometric Infrared Sounder, Atmospheric Chemistry and Physics, 22, 9099-9110. 
3)	Jing Wei*, Zhanqing, Lin Sun, Wenhao Xue, Zongwei Ma, Lei Liu, Tianyi Tian, Maureen Cribb, 2022, Extending the EOS long-term PM2.5 data records since 2013 in China: application to the VIIRS Deep Blue aerosol products. IEEE Transactions on Geoscience and Remote Sensing, 60, 1-12, 4100412.
4)	Pu Liu, Jia Ding, Yufeng Ji, Hang Xu, Sheng Liu, Bin Xiao, Haodong Jin, Xiaojun Zhong, Zecheng Guo, Houcheng Wang*, Lei Liu*, 2022. Satellite Support to Estimate Livestock Ammonia Emissions: A Case Study in Hebei, China. Atmosphere, 13, 1552.
5)	SonghanWang*, Yongguang Zhang*, Weimin Ju, Mousong Wu, Lei Liu, Wei He, Josep Peñuelas, 2022. Temporally corrected long-term satellite solar-induced fluorescence leads to improved estimation of global trends in vegetation photosynthesis during 1995–2018. ISPRS Journal of Photogrammetry and Remote Sensing, 194, 222-234. 
6)	Yuyu Yang, Lei Liu*, Pu Liu, Jia Ding, Xu Hang, Sheng Liu, 2022. Improved global agricultural crop- and animal-specific ammonia emissions during 1961–2018, Agriculture Ecosystems & Environment 344, 108289.
2021 (10)
1)	Yuyu Yang, Lei Liu*, Feng Zhang, Xiuying Zhang, Wen Xu, Xuejun Liu, Zhen Wang, Yaowen Xie*, 2021, Soil nitrous oxide emissions by atmospheric nitrogen deposition over global agricultural systems, Environmental Science & Technology, 55, 4420-4429.
2)	Yuyu Yang, Lei Liu*, Zhaohai Bai, Wen Xu, Feng Zhang, Xiuying Zhang, Xuejun Liu, Yaowen Xie*, 2021, Comprehensive quantification of global cropland ammonia emissions and potential abatement, Science of The Total Environment, 151450.
3)	Lei Liu*, Yuyu Yang, Ruipeng Xi, Xiuying Zhang, Wen Xu, Xuejun Liu, Pu Liu, Zhen Wang, 2021, Global wet reduced nitrogen deposition derived from satellite measurements combining chemistry transport models, Journal of Geophysical Research-Atmosphere, 126, e2020JD033977p
4)	Yuyu Yang, Lei Liu*, Feng Zhang, Xiuying Zhang, Wen Xu, Xuejun Liu, Yi Li, Zhen Wang, Yaowen Xie*, 2020, Enhanced Nitrous Oxide Emissions Caused by Atmospheric Nitrogen Deposition over China, Environmental Science and Pollution Research, 28, 15350-15360
5)	Ruipeng Xi, Lei Liu*, Jizong Jiao, Yaowen Xie, Yuyu Yang, Pu Liu, 2021, Analysis of temporal and spatial characteristics of surface ammonia concentrations in different land cover types in the five provinces of Northwest China, Journal of Lanzhou University, 57, 736-742 (In Chinese)
6)	Zhen Wang, Xiuying Zhang*, Lei Liu, Shanqian Wang, Limin Zhao, Xiaodi Wu, Wuting Zhang, Xianjin Huang*, 2021, Estimates of methane emissions from Chinese rice fields using the DNDC model, Agricultural and Forest Meteorology, 303, 108368 
7)	Qi Zhang, Yanan Li, Mengru Wang, Kai Wang, Fanlei Meng, Lei Liu, Yuanhong Zhao, Lin Ma, Qichao Zhu, Wen Xu*, Fusuo Zhang, Atmospheric nitrogen deposition: A review of quantification methods and its spatial pattern derived from the global monitoring networks, Ecotoxicology and Environmental Safety, 216, 112180
8)	Xiuying Zhang*, Zhen Wang, Lei Liu, Nan Zhan, Jiayao Qin, Xinqing Lu, Miaomiao Cheng, 2021, Assessment of the risks from dietary lead exposure in China, Journal of Hazardous Materials, 418, 126134
9)	Lijie He, Lunche Wang*, Zhengqiang Li, Daoyang Jiang, Lin Sun, Dong Liu, Lei Liu, Rui Yao, Zhigao Zhou, Jing Wei*, 2021, VIIRS Environmental Data Record and Deep Blue aerosol products: validation, comparison, and spatiotemporal variations from 2013 to 2018 in China, Atmospheric Environment, 250, 118265
10)	Jing Wei*, Zhanqing Li*, Wenhao Xue, Lin Sun, Tianyi Fan, Lei Liu, Tianning Su, Maureen Cribb, 2021, The ChinaHighPM10 dataset: generation, validation, and spatiotemporal variations from 2015 to 2019 across China, Environment International, 146, 106290 (ESI Highly Cited Paper)
2020 (10)
1)	Lei Liu*, Xiuying Zhang*, Wen Xu, Xuejun Liu, Yan Zhang, Yi Li, Jing Wei, Xuehe Lu, Shanqian Wang, Wuting Zhang, Limin Zhao, Zhen Wang, Xiaodi Wu, 2020. Fall of oxidized while rise of reduced reactive nitrogen deposition in China, Journal of Cleaner Production, 272, 122875. 
2)	Lei Liu*, Xiuying Zhang, Wen Xu, Xuejun Liu, Yi Li, Jing Wei, Zhen Wang, Xuehe Lu, 2020. Ammonia volatilization as the major nitrogen loss pathway in dryland agroecosystems, Environmental Pollution, 265, 114862.
3)	Lei Liu*, Xiuying Zhang*, Wen Xu, Xuejun Liu, Jing Wei, Zhen Wang, Yuyu Yang, 2020. Global estimates of dry ammonia deposition inferred from space-measurements, Science of the Total Environment, 730, 139189. 
4)	Lei Liu*, Xiuying Zhang, Wen Xu, Xuejun Liu, Xuehe Lu, Jing Wei, Yi Li, Yuyu Yang, Zhen Wang, Anthony Y. H. Wong, 2020, Reviewing global estimates of surface reactive nitrogen concentration and deposition using satellite observation, Atmospheric Chemistry and Physics, 20, 8641-8658
5)	Lei Liu*, Xiuying Zhang*, Wen Xu, Xuejun Liu, Yi Li, Jing Wei, Meng Gao, Jian Bi, Xuehe Lu, Zhen Wang, Xiaodi Wu, 2020. Challenges for global sustainable nitrogen management in agricultural systems, Journal of Agricultural and Food Chemistry, 68, 3354-3361.
6)	Jing Wei, Wei Huang, Zhanqing Li*, Lin Sun, Xiaolin Zhu, Qiangqiang Yuan, Lei Liu, Maureen Cribb, 2020, Cloud detection for Landsat imagery by combining the random forest and superpixels extracted via energy-driven sampling segmentation approaches, Remote Sensing of Environment, 248, 1-14.
7)	Jing Wei, Zhanqing Li*, Maureen Cribb, Wei Huang, Wenhao Xue, Lin Sun, Jianping Guo, Yiran Peng, Jing Li, Alexei Lyapustin, Lei Liu, Hao Wu, Yimeng Song, 2020. Improved 1 km resolution PM2.5 estimates across China using enhanced space-time extremely randomized trees, Atmospheric Chemistry and Physics, 20, 3273-3289. (ESI Highly Cited Paper)
8)	Zhen Wang, Xiuying Zhang*, Lei Liu, Shanqian Wang, Limin Zhao, Xiaodi Wu, Wuting Zhang, Xianjin Huang*, Inhibition of methane emissions from Chinese rice fields by nitrogen deposition based on the DNDC model, Agricultural Systems, 184, 102919.
9)	Jing Wei*, Zhanqing Li, Lin Sun, Yiran Peng, Lei Liu, Lijie He, Wenmin Qin, and Maureen Cribb, 2020, MODIS Collection 6.1 3 km resolution aerosol optical depth product: global evaluation and uncertainty analysis, Atmospheric Environment, 240, 117768. 
10)	Zhen Wang, Xiuying Zhang*, Lei Liu, Miaomiao Cheng, Junfeng Xu, 2020, Spatial and seasonal patterns of atmospheric nitrogen deposition in North China, Atmospheric and Oceanic Science Letters, 13, 188-194
2019 (3)
1)	Lei Liu*, Xiuying Zhang*, Anthony Y.H. Wong, Wen Xu, Xuejun Liu, Yi Li, Huan Mi, Xuehe Lu, Limin Zhao, Zhen Wang, Xiaodi Wu, Jing Wei, 2019. Estimating global surface ammonia concentrations inferred from satellite retrievals, Atmospheric Chemistry and Physics. 19, 12051-12066.
2)	Zhen Wang, Xiuying Zhang*, Lei Liu, Shanqian Wang, Xiaodi Wu, Wuting Zhang, Limin Zhao, Xuehe Lu, Xiaofeng Zhao, 2019. Evaluating the effects of nitrogen deposition on rice ecosystems across China. Agriculture, Ecosystems and Environment, 285, 106617. 
3)	Wen Xu, Xuejun Liu*, Lei Liu, Anthony J. Dore, Aohan Tang, Li Lu, Qinghua Wu, Yangyang Zhang, Tianxiang Hao, Yuepeng Pan, Jianmin Chen, Fusuo Zhang, 2019. Impact of emission controls on air quality in Beijing during APEC 2014: Implications from water-soluble ions and carbonaceous aerosol in PM2.5 and their precursors, Atmospheric Environment, 210, 241-252.
2018 (6)
1)	Xiuying Zhang*, Xiaowei Chuai*, Lei Liu, Wuting Zhang, Xuehe Lu, Limin Zhao, Dongmei Chen, 2018. Decadal trends in wet sulfur deposition in China estimated from OMI SO2 columns. Journal of Geophysical Research: Atmospheres, 123, 10796-10811. 
2)	Wen Xu, Lei Liu, Miaomiao Cheng, Yuanhong Zhao, Lin Zhang, Yuepeng Pan, Xiuming Zhang, Baojing Gu, Yi Li, Xiuying Zhang, Jianlin Shen, Li Lu, Xiaosheng Luo, Yu Zhao, Zhaozhong Feng, Jeffrey L. Collett Jr., Fusuo Zhang, Xuejun Liu*, 2018. Spatial-temporal patterns of inorganic nitrogen air concentrations and deposition in eastern China. Atmospheric Chemistry and Physics, 18, 10931-10954.
3)	Xiuying Zhang*, Wuting Zhang, Xuehe Lu, Xuejun Liu, Dongmei Chen, Lei Liu, Xianjin Huang*, 2018. Long-term trends in NO2 columns related to economic developments and air quality policies from 1997 to 2016 in China. Science of the Total Environment, 639, 146-155.
4)	Wuting Zhang, Xiuying Zhang, Lei Liu, Limin Zhao, Xuehe Lu, 2018. Temporal and spatial variations of atmospheric NO2 concentration in North China Plain with multi-source Satellite Remote Sensing. Journal of Remote Sensing, 22, 335-346.
5)	Wen Xu, Yuanhong Zhao, Xuejun Liu*, Anthony J. Dore, Lin Zhang, Lei Liu, Miaomiao Cheng, 2018. Atmospheric nitrogen deposition in the Yangtze River basin: Spatial pattern and source attribution. Environmental Pollution, 232, 546-555.
6)	Shanqian Wang, Xiuying Zhang*, Yuandan Ma, Xinhui Li, Min Cheng, Xiaomin Zhang, Lei Liu, 2018. Detecting Sulfuric and Nitric Acid Rain Stresses on Quercus glauca through Hyperspectral Responses. Sensors, 18, 830.
2017 (7)
1)	Lei Liu, Xiuying Zhang*, Yan Zhang, Wen Xu, Xuejun Liu, Xiaomin Zhang, Junlan Feng, Xinrui Chen, Yuehan Zhang, Xuehe Lu, Shanqian Wang, Wuting Zhang, Limin Zhao, 2017. Dry Particulate Nitrate Deposition in China. Environmental Science & Technology, 51, 5572-5581.
2)	Lei Liu, Xiuying Zhang*, Wen Xu, Xuejun Liu, Yi Li, Xuehe Lu, Yuehan Zhang, Wuting Zhang, 2017. Temporal characteristics of atmospheric ammonia and nitrogen dioxide over China based on emission data, satellite observations and atmospheric transport modeling since 1980, Atmospheric Chemistry and Physics, 17, 9365-9378.
3)	Lei Liu, Xiuying Zhang*, Wen Xu, Xuejun Liu, Xuehe Lu, Dongmei Chen, Shanqian Wang, Wuting Zhang, 2017. Estimation of monthly bulk nitrate deposition in China based on satellite NO2 measurement by the Ozone Monitoring Instrument. Remote Sensing of Environment, 199, 93-106.
4)	Lei Liu, Xiuying Zhang*, Wen Xu, Xuejun Liu, Xuehe Lu, Shanqian Wang, Wuting Zhang, Limin Zhao, 2017. Ground ammonia concentrations over China derived from satellite and atmospheric transport modeling, Remote Sensing, 9, 1-19.
5)	Lei Liu, Xiuying Zhang*, Taiyang Zhong, Shanqian Wang, Wuting Zhang, Limin Zhao, 2017. Spatial Distribution and Risk Assessment of Copper in Agricultural Soils, China, Human and Ecological Risk Assessment, 23, 1404-1416. 
6)	Xiuying Zhang, Xuehe Lu*, Lei Liu, Dongmei Chen, Xiaomin Zhang, Xuejun Liu, Yan Zhang, 2017. Dry deposition of NO2 over China inferred from OMI columnar NO2 and atmospheric chemistry transport model. Atmospheric Environment, 169, 238-249.
7)	Wen Xu, Yuanhong Zhao, Xuejun Liu*, Anthony J. Dore, Lin Zhang, Lei Liu, Miaomiao Cheng, 2017, Atmospheric nitrogen deposition in the Yangtze River basin: Spatial pattern and source attribution, Environmental Pollution, 232, 546-555
2016 (6)
1)	Lei Liu, Xiuying Zhang*, Shanqian Wang, Wuting Zhang, Xuehe Lu, 2016. Bulk sulfur deposition in China. Atmospheric Environment, 135, 41-49. 
2)	Lei Liu, Xiuying Zhang*, Shanqian Wang, Xuehe Lu, Xiaoying Ouyang, 2016. A Review of Spatial Variation of Inorganic Nitrogen Wet Deposition in China. PloS one, 11, e0146051. 
3)	Lei Liu, Xiuying Zhang*, Xuehe Lu, 2016. The composition, seasonal variation, and potential sources of the atmospheric wet sulfur and nitrogen deposition in the southwest of China. Environmental Science and Pollution Research, 23, 6363-6375. 
4)	Lei Liu, Xiuying Zhang*, Taiyang Zhong, 2016. Pollution and health risk assessment of heavy metals in urban soil in China. Human and Ecological Risk Assessment, 22, 424-434.
5)	Xiuying Zhang, Taiyang Zhong, Lei Liu, Xiaomin Zhang, Min Cheng, Xinhui Li, 2016. Chromium occurrences in arable soil and its influence on food security in China. Environmental Earth Science, 75, 257. 
6)	Xiuying Zhang, Taiyang Zhong, Dongmei Chen, Min Cheng, Lei Liu, Xiaomin Zhang, Xinhui Li, 2016. Assessment of arsenic occurrence in arable soil and its related health risk in China. Environmental Geochemistry and Health, 38, 691-702.
2015 (1)
1)	Xiuying Zhang, Taiyang Zhong, Lei Liu, Xiaoying Ouyang, 2015. Impact of soil heavy metal pollution on food safety in China. PLOS one, 10, e0135182 (ESI Highly Cited Paper)

1)	Xuejun Liu, Wen Xu, Lei Liu, Enzai Du, Jianlin Shen, Xiaosheng Luo, Xiuying Zhang, Keith Goulding, 2020. Monitoring Atmospheric Nitrogen Deposition in China. In Xuejun Liu, & Enzai Du (Eds.), Atmospheric Reactive Nitrogen in China: Emission, Deposition and Environmental Impacts. Singapore: Springer Singapore, pp. 41-65 
2)	Xuejun Liu, Wen Xu, Enzai Du, Ying Zhang, Jianlin Shen, Xiaosheng Luo, Wei Wang, Yuepeng Pan, Lei Liu. Chapter 8 Measurement methods of atmospheric nitrogen deposition. In Book “Experimental research methods of soil nitrogen cycle”, Edited by Xiaoyuan Yan. Beijing, Science Press, 2020.