浓度响应关系
Concentration-response
relationship | 白天7 h (9:00-16:00) O3浓度平均值(M7)或白天12 h (8:00-20:00) O3浓度平均值(M12)
7 h (9:00-16:00) seasonal mean O3
concentrations (M7), 12 h (8:00-18:00)
seasonal mean O3 concentrations (M12) | 计算简单, 直观易懂, 参数需求较少
Simple calculation, easy understanding, less parameters | 仅考虑O3浓度唯一因素, 机理性较差
This approach only considers O3
concentration, but no physical mechanism |
剂量响应关系
Concentration-based
dose-response relationship | O3小时浓度高于或等于60 μg·kg-1的累积值(SUM06), O3小时浓度在规定时段内的加权求和值(W126), 整个生长季太阳辐射>50 W·m-2时段内O3小时浓度超过X μg·kg-1的累计值(AOTX)
The sum of all hourly average
concentrations > 60 μg·kg-1 (SUM06), a cumulative ozone exposure index based on sigmoidally weighted daytime O3 concentrations (W126), accumulated
hourly O3 concentration over a threshold
of X μg·kg-1 during daylight hours (AOTX) | 计算简单, 同时关注O3浓度和暴露时
间, 应用广泛
Simple calculation and wide application,
the method concerns O3 concentration
and exposure time simultaneously | 只探讨O3对植物的影响, 没有考虑其他环境因子的影响, 缺乏生物学意义
This approach only considering the factor O3 but not consider the effect of other environmental factors on plants, and thus no biological meaning is covered |
通量响应关系
Flux-based dose-responses
relationship | 整个生长季单位面积上气孔O3吸收通量超过临界值Y nmol m-2·s-1的积累量(PODY)
Phytotoxic O3 dose over a threshold of
Y (PODY) | 同时考虑环境因子(物候、温度、光照、蒸气压和土壤水势等参数)和植物自身对O3响应的影响
Environmental factors (e.g. phenology,
temperature, photosynthetically photon
flux density, water vapor pressure deficit,
soil water potential) and plants itself
were considered | 所需参数较多, 计算过程复杂, 树种特异性限制较大
This approach required many parameters with a complex calculation procedure, but varied by species |