Forest characteristics, population structure and growth trends of Pinus yunnanensis in Tianchi National Nature Reserve of Yunnan, southwestern China oleh Cindy Q. Tang, Li-Qin Shen, Peng-Bin Han, Diao-Shun Huang, Shuaifeng Li, Yun-Fang Li, Kun Song, Zhi-Ying Zhang, Long-Yun Yin, Rui-He Yin, Hui-Ming Xu