Source | CCTV News On October 9, the Chinese giant tree scientific expedition team composed of the Institute of Botany, Chinese Academy of Sciences, etc. released the accurate height of Yunnan Huangguo Fir, the "highest tree in China" is 83.4 meters. At the same time, the giant t

Source | CCTV News

October 9

High Tree Science Expedition Team

Released currently "China's Highest Tree"

Cloud Cloud The accurate height of the southern yellow fruit fir is 83.4 meters

At the same time, the giant tree is also released.

↓↓↓

△ The giant tree is stitched later by more than 160 photos. The overall picture of the same tree is more than 350 million pixels, and the screen can be projected on a 100-meter giant screen to show the details of the giant tree.

Trees with a tree height of more than 70 meters

Scientists call it giant tree

Chinese giant tree 83.4 meters, equivalent to 28 stories high

Scientific expedition team also created

New climbing and collection record of Chinese giant tree

△The giant tree community on the banks of the Chayu River (photography and synthesis/" Wild Chinese " studio team)

83.4 meters high?

It is understood that this scientific expedition used

international "gold standard" for measuring giant trees -

Direct tree climbing measurement method

that is, manually climbing to the top of the giant tree

After determining the highest treetop,

Roll the metal The ruler is placed from the treetop to the ground to measure

△Scientific Expedition team members measure

. Because the tree is huge and is on a slope

The lowest point in the center of the trunk cannot reach

The inspection team members conducted multiple measurements

The exposed part of the inclined tree stump is 0.8 meters. After determining the center point of the stump,

finally found that the lowest point in the trunk center

to the treetop height difference is 83.4 meters

△ Giant tree measurement method schematic diagram

Through breast diameter ring measurement and field inverted wood tree wheel survey

It was measured that the breast diameter of the giant tree reached 207 cm

The tree is around 380 years old

At present, the giant tree is in the middle of the life cycle

There are new buds on the top of the tree, and it is solid and normal

is still in the healthy growth stage

△The growth chart of the giant tree treetops: the left and right chart is 87 days apart, and the white line on the top of the picture shows that it has grown about 10 cm in 87 days.

There are more than 350 types of higher plants

, including climbing plants, epiphytes

, parasitic plants , and other types of

, showing unique biodiversity