Letters
- Qi Yan1,*,
- Yunhong Hu2,3
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1School of Tourism and Social Administration, Nanjing Xiaozhuang University, Nanjing, China.
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2School of Landscape Architecture, Nanjing Forestry University, Nanjing, China.
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3Research Center on Forestry Legacy and Environmental History of China National Forestry and Grassland Administration, Nanjing, China.
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Corresponding author. Email: yorknjcn{at}msn.com
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