Surface Ozone Change in China from 2010 to 2017 and its Impact on Crop Yield
Date
2020-04-24
Author
Advisors
Shindell, Drew
Zhang, Yuqiang
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Abstract
Ambient Ozone (O3) exposure is considered to impose negative impacts on plants and
crops. In this study, we performed a comprehensive estimation on the crop yield losses
attribute to surface O3 in China from 2010 to 2017 applying the model predicted ambient
ozone concertation across China. Spatial and temporal distribution of relative yield
loss and crop production loss was calculated using AOT40 metrics (hourly ozone concentration
over a threshold of 0.04 ppm h over the growing season). Our results show that from
2010 to 2017, national average AOT40 level ranges from 44 ppm h in 2010 to 71 ppm
h in 2014. By using concentration response function, we then calculated the crops
relative yields, including wheat, rice, maize and soybean from surface ozone, and
found that average O3 induced crop yield loss were around 44.67 million Mt, 44.74
million Mt, 7.41 million Mt, and 0.38 million Mt individually, inducing average economic
loss of $15.76Billion, $20.33Billion, $0.58 Billion, and $0.29Billion accordingly.
Our results provided quantitative estimation on crop yield loss and its economic cost
from ambient ozone concentration and improved the understanding of crop and spatial
sensitivity to ozone impact.
Type
Master's projectPermalink
https://hdl.handle.net/10161/20524Citation
Li, Dianyi (2020). Surface Ozone Change in China from 2010 to 2017 and its Impact on Crop Yield. Master's project, Duke University. Retrieved from https://hdl.handle.net/10161/20524.Collections
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