|
|
Forests in Deep Valleys
 |
 |
|
Huge Tibet Cypress |
Altingia excelsa(by Li Bosheng) |
 |
|
Records in the dense forest |
 |
|
Birchwood in the depth of the dense forest |
 |
|
Professor Li Bosheng and Guan Zhihua are measuring the annual ring width of a big tree |
 |
|
|
Rusty fungi are threatening the forest |
|
|
|
|
