臭氧对农业生态系统影响的综合评估:以长江三角洲为例

被引：11

作者：

姚芳芳

王效科

逯非

冯宗炜

欧阳志云

机构：

[1] 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

来源：

生态毒理学报 | 2008年 / 02期

关键词：

臭氧; 农作物; 临界水平; 长江三角洲; 剂量-响应函数;

D O I：

暂无

中图分类号：

X515 [光化学烟雾];

学科分类号：

0706 ; 070602 ;

摘要：

如何评价和预测近地层臭氧(O3)浓度持续升高对作物的影响是污染生态学研究的热点之一.依据改进的开顶式气室(Open-top chamber,OTC)实验资料,建立了我国长江三角洲地区O3与3种典型农作物(水稻、冬小麦和油菜)的剂量-响应(Dose-response)函数,并对该地区2003年作物产量损失进行了综合估算.研究结果表明:1)水稻、冬小麦和油菜3种作物的O3临界水平值分别为7.434、2.280和7.328ppm·h,冬小麦最为敏感;2)O3污染已造成该地区较为严重的产量损失,2003年水稻、冬小麦和油菜分别减产3.04%、17.08%和5.92%,经济损失达到5.76、7.68和2.61亿元.长江三角洲地区高浓度O3污染必须引起足够的重视。

引用

页码：189 / 195

页数：7

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