Effects of climate change, CO2 and O-3 on wheat productivity in Eastern China, singly and in combination

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Effects of climate change, CO2 and O-3 on wheat productivity in Eastern China, singly and in combination
	Chen, Yi; Tao, Fulu; Feng, Zhaozhong; Tang, Haoye; Kobayashi, Kazuhiko
刊名	ATMOSPHERIC ENVIRONMENT
	2017-03-01
卷号	153 期号:0 页码:182-193
关键词	Air Pollution Climate Change Co2 Fertilization Crop Ozone Risk
英文摘要	Air pollution and climate change are increasing threats to agricultural production and food security. Extensive studies have focused on the effect of climate change, but the interactive effects of multiple global change factors are poorly understood. Here, we incorporate the interactions between climate change, carbon dioxide (CO2) and ozone (O-3) into an eco-physiological mechanistic model based on three years of 03 Free-Air Concentration Elevation (O-3-FACE) experiments. We then investigate the effects of climate change, elevated CO2 concentration ([CO2]) and rising O-3 concentration ([O-3]) on wheat growth and productivity in eastern China in 1996-2005 (2000s) and 2016-2025 (2020s) under two climate change scenarios, singly and in combination. We find the interactive effects of climate change, CO2 and O-3 on wheat productivity have spatially explicit patterns; the effect of climate change dominates the general pattern, which is however subject to the large uncertainties of climate change scenarios. Wheat productivity is estimated to increase by 2.8-9.0% due to elevated [CO2] however decline by 2.8-11.7% due to rising [O-3] in the 2020s, relative to the 2000s. The combined effects of CO2 and O-3 are less than that of 03 only, on average by 4.6-5.2%, however with O-3 damage outweighing CO2 benefit in most of the region. This study demonstrates a more biologically meaningful and appropriate approach for assessing the interactive effects of climate change, CO2 and O-3 on crop growth and productivity. Our findings promote the understanding on the interactive effects of multiple global change factors across contrasting climate conditions, cast doubt on the potential of CO2 fertilization effect in offsetting possible negative effect of climate change on crop productivity as suggested by many previous studies. (C) 2017 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/38997]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Chen, Yi,Tao, Fulu,Feng, Zhaozhong,et al. Effects of climate change, CO2 and O-3 on wheat productivity in Eastern China, singly and in combination[J]. ATMOSPHERIC ENVIRONMENT,2017,153(0):182-193.
APA	Chen, Yi,Tao, Fulu,Feng, Zhaozhong,Tang, Haoye,&Kobayashi, Kazuhiko.(2017).Effects of climate change, CO2 and O-3 on wheat productivity in Eastern China, singly and in combination.ATMOSPHERIC ENVIRONMENT,153(0),182-193.
MLA	Chen, Yi,et al."Effects of climate change, CO2 and O-3 on wheat productivity in Eastern China, singly and in combination".ATMOSPHERIC ENVIRONMENT 153.0(2017):182-193.