Keller T, Häsler R
Swiss Federal Institute of Forestry Research, CH-8903, Birmensdorf, Switzerland.
Oecologia. 1984 Oct;64(2):284-286. doi: 10.1007/BF00376884.
Clonal stock (grafts of 15-, 50-, and 100-year-old trees) of spruce (Picea abies (L.) Karst.) and fir (Abies alba Mill.) was exposed either to 150 ppb ozone (∼300 μgm) during 9 daylight hours or to carbon-filtered air on 35 days between 29 August and 21 October 1983. At the end of the fumigation the trees did not exhibit any visible signs of injury. Transpiration and leaf conductance in light and darkness, measured with a Licor porometer, revealed, however, stomatal sluggishness and - in spruce-increased transpiration.
1983年8月29日至10月21日期间，对云杉（欧洲云杉（Picea abies (L.) Karst.））和冷杉（欧洲冷杉（Abies alba Mill.））的克隆植株（15年、50年和100年树龄的嫁接苗）进行了处理，使其在9个白天小时内暴露于150 ppb臭氧（约300微克/立方米）中，或暴露于经过活性炭过滤的空气中，为期35天。熏蒸结束时，树木未表现出任何可见的损伤迹象。然而，使用Licor气孔计测量的光下和暗中的蒸腾作用和叶片导度显示，气孔反应迟缓，且云杉的蒸腾作用增强。
