Beijing has created a map of female poplar and willow trees in an effort to control the catkins on the city’s streets each spring. Photo: Sina

China’s capital maps its willows and poplars in fightback against annual catkins blizzard

  • Hundreds of forestry students use aerial photographs to identify problem areas
Topic |   China Society

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Beijing has created a map of female poplar and willow trees in an effort to control the catkins on the city’s streets each spring. Photo: Sina
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