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Effects of elevated ozone on growth and yield of field-grown rice in Yangtze River Delta, China
Chen Zhan; Wang Xiaoke; Feng Zhaozhong; Zheng Feixiang; Duan Xiaonan; Yang Wenrui
2008
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
Volume20Issue:3Pages:320-325
AbstractWith rapid industrialization and urbanization in the Yangtze Delta, China, the tropospheric ozone concentration has increased to levels that induce crop yield loss. Rice, a widely grown crop in China, was investigated in field-established, open-top chambers. Four treatments were used: charcoal-filtered air (CF), non-charcoal-filtered air (NF), and charcoal-filtered air with two levels of additional ozone (O(3)-1 and O(3)-2). The AOT40s (accumulated hourly mean ozone concentration above 40 ppbv) were 0, 0.91, 23.24, and 39.28 ppmv.h for treatment of CF, NF, O(3)-1, and O(3)-2, respectively. The rice height and biomass were reduced in the elevated ozone concentration. Less organic matter partitioning to roots under the elevated ozone significantly decreased rice root activity. The yield loss was 14.3% and 20.2% under O(3)-1 and O(3)-2 exposure, respectively. This was largely caused by a reduction in grain weight per panicle.
Department城市与区域生态国家重点实验室
KeywordOzone Rice Growth Yield Yangtze Delta
WOS IDWOS:000254090900011
Citation statistics
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/21831
Collection城市与区域生态国家重点实验室
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GB/T 7714
Chen Zhan,Wang Xiaoke,Feng Zhaozhong,et al. Effects of elevated ozone on growth and yield of field-grown rice in Yangtze River Delta, China[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2008,20(3):320-325.
APA Chen Zhan,Wang Xiaoke,Feng Zhaozhong,Zheng Feixiang,Duan Xiaonan,&Yang Wenrui.(2008).Effects of elevated ozone on growth and yield of field-grown rice in Yangtze River Delta, China.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,20(3),320-325.
MLA Chen Zhan,et al."Effects of elevated ozone on growth and yield of field-grown rice in Yangtze River Delta, China".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 20.3(2008):320-325.
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