DOI: 10.1016/j.atmosenv.2013.11.078
Scopus记录号: 2-s2.0-84892462709
论文题名: Mapping ozone risks for rice in China for years 2000 and 2020 with flux-based and exposure-based doses
作者: Tang H ; , Pang J ; , Zhang G ; , Takigawa M ; , Liu G ; , Zhu J ; , Kobayashi K
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 86 起始页码: 74
结束页码: 83
语种: 英语
英文关键词: AOT40
; China
; Ozone flux
; Rice
; Risk assessment
; Stomatal conductance model
Scopus关键词: AOT40
; China
; Ozone flux
; Rice
; Stomatal conductance
; Ozone
; Risk assessment
; Risk perception
; ozone
; atmospheric pollution
; biological uptake
; concentration (composition)
; dose-response relationship
; mapping method
; ozone
; pollution exposure
; rice
; risk factor
; stomatal conductance
; article
; China
; controlled study
; cropping system
; exposure variable
; field experiment
; fumigation
; leaf gas exchange
; leaf senescence
; nonhuman
; ozone layer
; photosynthesis
; priority journal
; rice
; risk assessment
; stomatal conductance
; China
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: We parameterized a multiplicative model of stomatal conductance (gsto) for O3 uptake by rice leaves with the field measurements in a fully open-air ozone (O3) fumigation experiment. The estimated gsto compared well with the observed one (r2=0.79). By using the gsto model for O3 uptake, we estimated a flux-based O3 risk (POD6, accumulated stomatal flux of O3 above a threshold of 6nmolm-2s-1) for rice across China in years 2000 and 2020, and compared it with the exposure-based O3 risk (AOT40, accumulated hourly O3 concentration above 40ppb during daytime) for the same period. For the year 2000, both POD6 and AOT40 indicated the middle and lower reaches of Yangtze River and the south China being at the highest O3 risk. From the years 2000-2020, the O3 risks are projected to double (POD6) or triple (AOT40) in a majority of rice producing areas in the above two regions. Among three major rice cropping in the middle and lower reaches of Yangtze River, double-late rice is projected to have lower O3 risk than double-early rice and single rice on the either O3 risk measure in both 2000 and 2020. In south China, on the other hand, the O3 risks for double-late rice are comparable to that for early double-rice. In this study, the O3 risk was not measured as yield loss but as O3 flux and O3 exposure. The crop loss estimation would require a relationship between O3 flux and yield loss for major rice production regions across China. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80716
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan; Academy of Resource and Environment, Hubei University, Wuhan 430064, China; School of Computer Science and Technology, Nanjing University of Science and Technology, Nanjing 210094, China; Japan Agency for Marine-Earth Science and Technology, 3173-25 Showa-machi, Kanazawa-ku, Yokohama, Kanagawa 235-0001, Japan
Recommended Citation:
Tang H,, Pang J,, Zhang G,et al. Mapping ozone risks for rice in China for years 2000 and 2020 with flux-based and exposure-based doses[J]. Atmospheric Environment,2014-01-01,86