佟磊;王效科;肖航;黄仲文;

• 1:中国科学院城市环境研究所大气有害物质实验室
• 2:中国科学院宁波城市环境观测研究站
• 3: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

摘要(Abstract)：

地表监测数据表明,我国近地层O3污染日趋严重,已对水稻和冬小麦的生长造成严重威胁。为评估O3污染对我国农业生产的风险,综合已有剂量反应实验结果,对我国南北五个地区(北京、定兴、江都、嘉兴、东莞)水稻和冬小麦的O3敏感性进行了比较分析。研究发现:(1)随着实验地区和实验品种的变化,两种作物的O3敏感性存在明显差异,其中,水稻对O3的敏感程度由北到南逐渐增加;(2)两种作物的产量均随O3剂量的增加而降低,且冬小麦的减产程度高于水稻;(3)基于FACE实验得到的作物O3敏感性高于基于OTC实验的研究结果。利用上述研究得到的O3剂量反应方程和O3浓度预测数据,对未来我国水稻和冬小麦的产量损失进行了评估。预计到2020年,我国五个主要作物产地水稻和冬小麦的产量损失范围分别为3.2~28.8%和7.8~36.9%。上述结果表明,O3污染已对我国主要粮食作物的生长造成巨大威胁,且作物品种间存在明显的O3抗性差异,有必要采取有效措施缓解O3浓度的上升,同时,需要利用更科学的实验方法进行O3抗性品种的选育,这对降低O3的农业风险具有重要意义。

关键词(KeyWords)： 臭氧;水稻;冬小麦;开顶箱;产量

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(青年基金)(31300435);; 环境保护公益性行业科研专项经费(200809152);; 中国科学院城市环境研究所青年人才领域前沿项目(IUEQN-2012-03)

作者(Author): 佟磊;王效科;肖航;黄仲文;

Email:

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