Karlsson P E, Medin E L, Ottosson S, Selldén G, Wallin G, Pleijel H, Skärby L
Swedish Environmental Research Institute (IVL), PO Box 47086, S-402 58 Göteborg, Sweden.
Environ Pollut. 2004;128(3):405-17. doi: 10.1016/j.envpol.2003.09.008.
Norway spruce saplings [Picea abies (L.) Karst.] were exposed during four growing seasons to different ozone treatments in open-top chambers: charcoal filtered air (CF), non-filtered air (NF) and non-filtered air with extra ozone (NF+, 1.4xambient concentrations). The CF and NF+ ozone treatments were combined with phosphorous deficiency and drought stress treatments. The total biomass of the trees was harvested at different intervals during the experimental period. The ozone uptake to current-year needles of the Norway spruce saplings was estimated using a multiplicative stomatal conductance simulation model. There was a highly significant correlation between the reduction of total biomass and the estimated cumulative ozone uptake, which did not vary when different thresholds were applied for the rate of ozone uptake. The reduction of the total biomass was estimated to 1% per 10 mmol m(-2) cumulated ozone uptake, on a projected needle area basis.
在四个生长季节里，挪威云杉幼树[欧洲云杉（Picea abies (L.) Karst.）]在开顶式气室中接受了不同的臭氧处理：活性炭过滤空气（CF）、未过滤空气（NF）以及额外添加臭氧的未过滤空气（NF+，1.4倍环境浓度）。CF和NF+臭氧处理与缺磷和干旱胁迫处理相结合。在实验期间的不同时间间隔收获树木的总生物量。使用乘法气孔导度模拟模型估算了挪威云杉幼树当年针叶的臭氧吸收量。总生物量的减少与估算的累积臭氧吸收量之间存在高度显著的相关性，当对臭氧吸收速率应用不同阈值时，这种相关性并无变化。以预计的针叶面积为基础，估计累积臭氧吸收量每10 mmol m(-2)，总生物量减少1%。
