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《China Environmental Science》 2018-03
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Impact of yield and economic losses of crops due to exposure to ozone pollution:a case study of winter wheat and rice in Jiangsu Province

ZHAO Hui;ZHENG You-fei;CAO Jia-chen;WEI Li;GUAN Qing;Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration,Nanjing University of Information Science and Technology;School of Atmospheric Physics,Nanjing University of Information Science & Technology;Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET),Nanjing University of Information Science & Technology;  
In this study,we used the hourly ozone concentration data in Jiangsu Province in 2015 to analyze the variations of ground-level ozone and AOT 40(accumulated ozone exposure over a threshold of 40)during the winter wheat and rice growing seasons.Yield and economic losses of rice and winter wheat caused by O_3 pollution were estimated by utilizing O_3 exposure-response models.The results showed that:(1)The mean of ozone concentrations during the winter wheat and rice growing seasons were 80.1μg/m~3 and 83.8μg/m~3,respectively,and showed unimodal diurnal variations.Spatially,ozone concentration was higher in the northern Jiangsu and lower in the southern Jiangsu,and was lower in western Jiangsu,higher in eastern coastal areas.(2)The ozone AOT40 values during the winter wheat and rice growing seasons were 3.08~14.47μL/L·h and 10.79~21.67μL/L·h,respectively.(3)At the current ozone level,relative yield losses of winter wheat and rice were 23.9%and 16.5%,respectively.Crop production losses amounted to 3.687×1 0~6t for winter wheat and 3.858×1 0~6t for rice.The total economic cost losses in Jiangsu Province amounted to 87.01billion yuan for winter wheat and 106.48billion yuan for rice.Therefore,we need to take effective control measures to reduce agricultural losses under ozone pollution.
【Fund】: 国家自然科学基金面上项目(41475108);; 2017年度江苏省研究生科研创新项目(KYCX_0878);; 国家公派联合培养博士研究生项目(201708320313)
【CateGory Index】: S511;S512.11;X515
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