Lichens on a birch trunk in a deciduous forest. lichens die when the atmosphere air is polluted. Their growth is an indicator of the purity of the air.

Lichens on a birch trunk in a deciduous forest. lichens die when the atmosphere air is polluted. Their growth is an indicator of the purity of the air. 图片
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Lichens on a birch trunk in a deciduous forest. lichens die when the atmosphere air is polluted. Their growth is an indicator of the purity of the air.
  • 素材ID：568145511
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  • 格式：JPG
  • 作者：olenaari
  • 最大分辨率：12415 x 4016px
  • 最大输出：105.11 x 34.00cm (300dpi) | 437.97 x 141.68cm (72dpi)
关键词
背景木材增长污染大气共生环境海报纯度横幅森林地衣空气落叶树秋天行李箱形状夏季桦木

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