Department of Chemical & Environmental Engineering, Universidad Politécnica de Madrid (UPM), c/ José Gutiérrez Abascal 2, 28006 Madrid, Spain.
Environ Pollut. 2012 Jun;165:25-37. doi: 10.1016/j.envpol.2012.01.048. Epub 2012 Mar 5.
A module to estimate risks of ozone damage to vegetation has been implemented in the Integrated Assessment Modelling system for the Iberian Peninsula. It was applied to compute three different indexes for wheat and Holm oak; daylight AOT40 (cumulative ozone concentration over 40 ppb), cumulative ozone exposure index according to the Directive 2008/50/EC (AOT40-D) and POD(Y) (Phytotoxic Ozone Dose over a given threshold of Y nmol m(-2) s(-1)). The use of these indexes led to remarkable differences in spatial patterns of relative ozone risks on vegetation. Ozone critical levels were exceeded in most of the modelling domain and soil moisture content was found to have a significant impact on the results. According to the outputs of the model, daylight AOT40 constitutes a more conservative index than the AOT40-D. Additionally, flux-based estimations indicate high risk areas in Portugal for both wheat and Holm oak that are not identified by AOT-based methods.
已在伊比利亚半岛综合评估模型系统中实现了一个估算臭氧对植被破坏风险的模块。该模块用于计算小麦和油橄榄的三个不同指数：日光臭氧浓度 40（40ppb 以上臭氧浓度的累积）、根据指令 2008/50/EC 计算的臭氧暴露累积指数（AOT40-D）和 POD(Y)（超过 Y nmol m(-2) s(-1) 给定阈值的臭氧毒害剂量）。这些指数的使用导致了植被臭氧相对风险的空间分布模式出现显著差异。在建模区域的大部分地区，臭氧临界水平都被超过，并且发现土壤湿度对结果有重大影响。根据模型的输出，日光臭氧浓度 40 是比 AOT40-D 更保守的指标。此外，基于通量的估算表明，对于小麦和油橄榄，葡萄牙的高风险地区都没有被基于 AOT 的方法识别出来。
