Univerisity of Kentucky

College of Agriculture,
Food and Environment

Ren Lab

Climate extremes and ozone pollution: a growing threat to China’s food security


Ensuring global food security requires a sound understanding of climate and environmental controls on crop productivity in the context of global changes. This research is to quantify the combined impacts of drought and ozone pollution on China’s crop yield using a comprehensive, process-based agricultural ecosystem model in conjunction with observational data. Our results indicate that drought and O3 together led to much higher reduction in crop yield (right panel) than drought only did (left panel). Our results imply that reducing tropospheric O3 levels is critical for securing crop production in coping with increasing frequency and severity of extreme climate events such as droughts. Improving air quality should be a core component of climate adaptation strategies. 

2018 “Ozone effects on crops and consideration in crop models” Emberson, L. H. Pleijel, E. Ainsworth, M. van den Berg, W. Ren, S. Osborne, G. Mills, D. Pandey, F. Dentener, P. Büker, F. Ewert, R. Koeble, and R. Van Dingenen, European Journal of Agronomy, DOI: 10.1016/j.eja.2018.06.002

2018 “Effects of water stress on water use efficiency of irrigated and rainfed wheat in the Loess Plateau, China” Jin, N., W. Ren, B. Tao, L. He, Q. Ren, S. Li, and Q. Yu, Science of the Total Environment, DOI:10.1016/j.scitotenv.2018.06.028

2017 “Enhancing soil drought induced by climate change and agricultural practices: Observational and experimental evidence from the semiarid area of northern China” Zhang, J., P. An, J. Yang, W. Ren, Z. Pan, Z. Dong, G. Han, S. Pan, Y. Pan, H. Tian, Agricultural and Forest Meteorology, 243: 74–83.

2016 “Adjustment and Optimization of the Cropping Systems under Water Constraint, Sustainability” An, P., W. Ren, X. Liu, M. Song, and X. Li, 8 (12): 1207, DOI: 10.3390/su8121207.

2016 “Mapping Irrigated and Rainfed Wheat Areas Using Multi-Temporal Satellite Data” Jin, N., B. Tao, W. Ren, M. Feng, R. Sun, L. He, W. Zhuang, and Q. Yu, Remote Sensing, 8(3):207, DOI: 10.3390/rs8030207.

2016 “Climate extremes and ozone pollution: a growing threat to China's food security” Tian, H., W. Ren, B. Tao, G. Sun, A. Chappelka, X. Wang, S. Pan, J. Yang, J. Liu, B. S. Felzer, J. M. Melillo, and J. Reilly Ecosystem Health and Sustainability, 2(1), doi:10.1002/ehs2.1203

2015 “Responses of Crop Water Use Efficiency to Climate Change and Agronomic Measures in the Semiarid Area of Northern China” Zhang, J., W. Ren, P. An, Z. Pan, L. Wang, Z. Dong, D. He, J. Yang, S. Pan, and H. Tian, PLOS ONE, 10(9): e0137409, DOI:10.1371/journal.pone.0137409.

2012 “China's crop productivity and soil carbon storage as influenced by multifactor global change” Ren, W., H. Q. Tian, B. Tao, Y. Huang, and S. F. Pan, Global Change Biol, 18(9), 2945-2957, doi: 10.1111/j.1365-2486.2012.02741.x.

2011 “Spatial and temporal patterns of CO2 and CH4 fluxes in China's croplands in response to multifactor environmental changes” Ren, W., H. Q. Tian, X. F. Xu, M. L. Liu, C. Q. Lu, G. S. Chen, J. Melillo, J. Reilly, and J. Y. Liu, Tellus B, 63(2), 222-240, doi: 10.1111/j.1600-0889.2010.00522.x.

Research Area: Global Changes and Ecosystem Dynamics