Estimating Yield and Economic Losses Induced by Ozone Exposure in South China Based on Full-Coverage Surface Ozone Reanalysis Data and High-Resolution Rice Maps

Jie Pei, Pengyu Liu, Huajun Fang (), Xinyu Gao, Baihong Pan, Haolin Li, Han Guo and Feng Zhang
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Jie Pei: School of Geospatial Engineering and Science, Sun Yat-sen University, Zhuhai 519082, China
Pengyu Liu: School of Geospatial Engineering and Science, Sun Yat-sen University, Zhuhai 519082, China
Huajun Fang: Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
Xinyu Gao: School of Geospatial Engineering and Science, Sun Yat-sen University, Zhuhai 519082, China
Baihong Pan: Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK 73019, USA
Haolin Li: School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430070, China
Han Guo: School of Geospatial Engineering and Science, Sun Yat-sen University, Zhuhai 519082, China
Feng Zhang: Zhuhai Natural Resources Bureau, Zhuhai 519015, China

Agriculture, 2023, vol. 13, issue 2, 1-21

Abstract: Surface ozone (O 3 ) pollution is an emerging environmental abiotic stress that poses substantial risks to crop yield losses and food security worldwide, and especially in China. However, the O 3 -induced detrimental effects on double-season rice have rarely been investigated at large scales and over relatively long temporal spans. In this study, we estimated the crop production reductions and associated economic losses for double-season rice across southern China during 2013–2019, using a high spatial resolution surface ozone reanalysis dataset and rice distribution maps, and county-level production data, in combination with a locally derived exposure-response function for rice. Results show that AOT40 (cumulative hourly O 3 exposure above 40 ppb) presented generally increasing trends over growing seasons in 2013–2019, spanning from 4.0 to 7.1 ppm h and 6.1 to 10.5 ppm h for double-early rice and double-late rice, respectively. Moreover, O 3 -induced relative yield losses ranged from 4.0% to 6.6% for double-early rice and 6.3% to 11.1% for double-late rice. Over the seven years, ambient O 3 exposure resulted in crop production losses of 1951.5 × 10 4 tons and economic losses of 8,081.03 million USD in total. To combat the O 3 -induced agricultural risks, measures such as stringent precursors emission reductions and breeding O 3 -resistant cultivars should be continuously implemented in the future.

Keywords: rice; yield loss; abiotic stress; ozone exposure; food security (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
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