DOI: 10.1016/j.scitotenv.2020.137008
论文题名: Toward an impact assessment of ozone on plant carbon fixation using a process-based plant growth model: A case study of Fagus crenata grown under different soil nutrient levels
作者: Kinose Y. ; Fukamachi Y. ; Okabe S. ; Hiroshima H. ; Watanabe M. ; Izuta T.
刊名: Science of the Total Environment
ISSN: 489697
出版年: 2020
卷: 716 语种: 英语
英文关键词: Carbon fixation amount
; Fagus crenata
; Plant growth model
; Soil fertilization
; Tropospheric ozone
Scopus关键词: Carbon
; Carboxylation
; Charcoal
; Electron transport properties
; Fumigation
; Global warming
; Nutrients
; Ozone
; Plants (botany)
; Soils
; Troposphere
; Carbon fixation
; Fagus crenata
; Plant growth modeling
; Soil fertilization
; Tropospheric ozone
; Air pollution
; carbon
; charcoal
; ozone
; atmospheric pollution
; carbon fixation
; deciduous tree
; fertilization (reproduction)
; ozone
; pollution effect
; soil fertility
; soil nutrient
; toxicity
; troposphere
; Article
; beech
; carbon fixation
; carboxylation
; case study
; controlled study
; electron transport
; environmental impact assessment
; Fagus crenata
; leaf area
; mathematical model
; nonhuman
; photosynthesis
; photosynthetic photon flux density
; plant growth
; prediction
; priority journal
; seedling
; soil fertilization
; soil fumigation
; soil treatment
; Fagus crenata
英文摘要: Ozone (O3) in the troposphere, an air pollutant with phytotoxicity, is considered as a driver of global warming, because it reduces plant carbon fixation. Recently, a process-based plant growth model has been used in evaluating the O3 impacts on plants (Schauberger et al., 2019). To make the evaluation more rigorous, we developed a plant growth model and clarified the key factors driving O3-induced change in the whole-plant carbon fixation amount (Cfix). Fagus crenata seedlings were exposed to three O3 levels (charcoal-filtered air or 1.0- or 1.5-folds ambient [O3]) with three soil fertilization levels (non-, low-, or high-fertilized), i.e., a total of nine treatments. The Cfix was reduced in non- and low-fertilized treatments but was unaffected in high-fertilized treatment by O3 fumigation. Our plant growth model could simulate Cfix accurately (<10% error) by considering the impacts of O3 on plant leaf area and photosynthetic capacities, including maximum velocities of carboxylation and electron transport (Vcmax and Jmax, respectively), and the initial slope and convexity of the curve of the electron transport velocity response to photosynthetic photon flux density (φ and θ, respectively). Furthermore, the model revealed that changes in Vcmax and Jmax, φ and θ, or leaf area, caused by 1.5-folds the ambient [O3] fumigation resulted in the following Cfix changes: −1.6, −5.8, or −16.4% in non-fertilized seedlings, −4.1, −4.4, or −9.3% in low-fertilized seedlings, and −4.6, −7.6, or +5.8% in high-fertilized seedlings. Therefore, photosynthetic capacities (particularly φ and θ) and leaf area are important factors influencing the impact of O3 on Cfix of F. crenata seedlings grown under various fertilization levels. Further, the impacts of O3 and soil nutrient on these photosynthetic capacities and plant leaf area should be considered to predict O3-induced changes in carbon fixation by forest tree species using the process-based plant growth model. © 2020 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158226
Appears in Collections: 气候变化与战略
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作者单位: United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan; Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan; Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan; Institute of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan
Recommended Citation:
Kinose Y.,Fukamachi Y.,Okabe S.,et al. Toward an impact assessment of ozone on plant carbon fixation using a process-based plant growth model: A case study of Fagus crenata grown under different soil nutrient levels[J]. Science of the Total Environment,2020-01-01,716