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
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
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DOI：
10.1016/j.scitotenv.2020.137008
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发表时间：
2020-05-10
影响因子：
9.8
通讯作者：
Izuta, Takeshi
中科院分区：
文献类型：
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作者：
Kinose, Yoshiyuki;Fukamachi, Yoshinobu;Izuta, Takeshi
对流层中的臭氧（O-3）是一种具有植物毒性的空气污染物，被认为是全球变暖的驱动因素，因为它减少了植物的碳固定。最近，基于过程的植物生长模型已被用于评估O-3对植物的影响（Schauberger等人，2019年）。为了使评估更加严格，我们开发了一个植物生长模型，并阐明了驱动O3-诱导的全植物固碳量（C-fix）变化的关键因素。将毛豆幼苗暴露于三种O-3水平（木炭过滤空气或1.0或1.5倍环境[O-3]）和三种土壤施肥水平（未施肥、低施肥或高施肥），即，共9次治疗。在非和低施肥处理，但不受影响的C-固定在高施肥处理O-3熏蒸。我们的植物生长模型可以准确地模拟C-fix（
Ozone (O-3) 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 O-3 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 O-3-induced change in the whole-plant carbon fixation amount (C-fix). Fagas crenata seedlings were exposed to three O-3 levels (charcoal-filtered air or 1.0- or 1.5-folds ambient [O-3]) with three soil fertilization levels (non-, low-, or high-fertilized), i.e., a total of nine treatments. The C-fix was reduced in non- and low-fertilized treatments but was unaffected in high-fertilized treatment by O-3 fumigation. Our plant growth model could simulate C-fix accurately (