Otnyukova T
V.N. Sukachev's Institute for Forest Research, Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russia.
Environ Pollut. 2007 Mar;146(2):359-65. doi: 10.1016/j.envpol.2006.03.043. Epub 2006 May 19.
Thallus morphology and element concentrations (S, Al, Fe, Sr, Mn, Ni, Zn, Cu, Pb, As, F, and Cl) were compared in samples of the fruticose lichen genus Usnea at two heights of the Abies sibirica canopy in the East Sayan Mountains (Krasnoyarsk District, Russia) sampled from three stations at 15, 25 and 35 km from Krasnoyark. Usnea species with an abnormal morphology dominated on branches in the upper canopy, 15-22 m above ground level, and normal thalli on lower tree branches, 2-5 m above ground. Abnormal thalli at the tree-top level contained higher Al, Fe, Zn, F, Sr and Pb concentrations compared with normal thalli growing below, confirming a dust impact. No such clear trend was observed between sampling stations. Crown canopy architecture, surface microtopography and the balance between the processes of deposition and the movement and loss of particles play a major role in particle interception and in pollutant delivery to Usnea.
在俄罗斯克拉斯诺亚尔斯克边疆区东萨彦岭，从距克拉斯诺亚尔斯克15、25和35公里处的三个站点采集了西伯利亚冷杉树冠层两个高度的石蕊属（Usnea）枝状地衣样本，比较了其叶状体形态和元素浓度（硫、铝、铁、锶、锰、镍、锌、铜、铅、砷、氟和氯）。在离地15 - 22米的树冠上层的树枝上，形态异常的石蕊物种占主导，而在离地2 - 5米的较低树枝上则是正常叶状体。与下方生长的正常叶状体相比，树顶水平的异常叶状体含有更高浓度的铝、铁、锌、氟、锶和铅，证实了灰尘的影响。在采样站点之间未观察到这种明显趋势。树冠层结构、表面微观地形以及颗粒物沉积、移动和损失过程之间的平衡在颗粒物截留和污染物输送到石蕊属植物过程中起主要作用。
