近地层O<sub>3</sub>污染对作物产量与经济损失的影响——以江苏省冬小麦和水稻为例

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Abstract 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 O₃ pollution were estimated by utilizing O₃ exposure-response models.The results showed that:(1) The mean of ozone concentrations during the winter wheat and rice growing seasons were 80.1μg/m³ and 83.8μg/m³,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 3.687×10⁶t for winter wheat and 3.858×10⁶t 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.

Key words： ozone winter wheat rice AOT40 assessment

Received: 23 August 2017

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	ZHAO Hui
	ZHENG You-fei
	CAO Jia-chen
	WEI Li
	GUAN Qing

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ZHAO Hui,ZHENG You-fei,CAO Jia-chen等. 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[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(3): 1165-1173.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I3/1165

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