上海：创意养护美化树洞
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8月31日，市民在上海闸北公园内欣赏树洞彩绘。近日，上海闸北公园对园内悬铃木等大树的树洞进行修补和创意美化，提升公园的景观效果。园方对树洞进行内部清理、填充，对表面进行打磨、防水等处理后，选用安全环保的颜料进行彩绘创作，给游客带来新的游园体验。[新华社记者 刘颖 摄]
People view a painted tree hole at Zhabei Park in Shanghai, east China, Aug. 31, 2021. Zhabei Park recently made an effort to improve its appearance by cleaning and beautifying tree holes in the park with creative patterns. (Xinhua/Liu Ying)
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