云南省林业科学院 Yunnan Academy of Forestry 中国林科院 Chinese Academy of Forestry 中国林业科学研究院林业科技信息研究所 Research Institute of Forestry Policy and Information， CAF ..
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项目依托单位，北京林业大学、中国林科院。
The project is developed by Beijing Forestry University and China Forestry Institute.
中国林科院的韩一凡研究员告诉我们，北京从20年前开始种植毛白杨，北京目前70%的树木都是这一树种。
Han Yifan, a Chinese Academy of Forestry researcher, told us that Beijing began planting cottonwood poplar trees about 20 years ago and that about 70% of the city's trees are now this species.
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