A tall tree on Chinese mainland found in Tibet在西藏發(fā)現(xiàn)新大樹(shù)

劉同功

西藏墨脫縣背崩鄉(xiāng)格林村記錄到的一棵高達(dá)76.8米的不丹松，是目前中國(guó)大陸范圍內(nèi)最高的樹(shù)之一。

主題語(yǔ)境：自然趣聞 篇幅：322詞 建議用時(shí)：7分鐘

Towering 76.8 meters， a giant Bhutan pine discovered in Metog County of the TibetAutonomous Region， has become one of the tallest trees ever found in China， according tothe countys forestry and grassland bureau.

A large?scale surveying and mapping project using a drone?mounted lidar system，which uses lasers to scan its environment， discovered 11 trees that could potentially mea?sure over 70 meters. The team then entered the forests with backpack lidar scanners anddid more detailed surveying of the 11 trees. Lidar is an internationally recognized technolo?gy used for measuring trees height， especially for very tall trees， as lidar is safer and moreaccurate than using height finders or climbing to the top.

The joint surveying team used drone?mounted and backpack lidar scanners to create3D models of the 11 trees， and did detailed surveying of their actual height， 3D structureand environment. After 10 days of fieldwork， data collection and processing， the 76.8?meterpine was found. The team obtained the precise 3D point cloud data of the tree and created afull?size composite photo using images taken by drones. Using drones to drop measure?ropes and a tape measure， the team verified the height and diameter at the breast height ofthe tree.

Seven other trees taller than 70 meters were found during the survey in the village ofJeling， making it the place with the largest number of tall trees in China. This also demon?strates the authenticity of the forest ecosystem of the Yarlung Zangbo River Grand CanyonArea.

Liu Zhen， an official from the Metog forestry bureau， said finding such a giant Bhutanpine in this area reflects the ecological protection along the Yarlung Zangbo River， and itshows how effective governmental efforts in ecological protection have been in this area.“Taller trees may be found in this area in the future. We will continue to explore and seekto find more striking trees，”he said.

“I am pleased and honored to hear the great news of our village having some tallesttrees found on the Chinese mainland. I believe more people will pay attention to our home?town， and to the importance of ecological protection，”said Dorje Phuntsok， village leader ofJeling.

Reading Check

1. Lidar is used in the research work mainly for its .

A. flexibility B. fuel efficiency

C. lighter weight D. safety and accuracy

2. How is paragraph 3 mainly developed？

A. By space. B. By example.

C. By process. D. By importance.

3. Whats the significance of the giant tree according to Liu Zhen？

A. It belongs to a rare tree species.

B. It signals a well?preserved ecosystem.

C. It may bring in huge economic benefits.

D. It may lead to the discovery of taller trees.

4. How does Dorje Phuntsok sound in the last paragraph？

A. Proud. B. Worried. C. Surprised. D. Uninterested.

Language Study

Ⅰ. Difficult sentence in the text

A large?scale surveying and mapping project using a drone?mounted lidar system，which uses lasers to scan its environment， discovered 11 trees that could potentially mea?sure over 70 meters. 研究人員在一次大規(guī)模的利用無(wú)人機(jī)搭載激光雷達(dá)系統(tǒng)的調(diào)查和測(cè)繪活動(dòng)中，發(fā)現(xiàn)了有11棵樹(shù)的高度都有可能超過(guò)70米。

【點(diǎn)石成金】本句是一個(gè)復(fù)合句。discovered是主句的謂語(yǔ)動(dòng)詞；which引導(dǎo)的是一個(gè)非限制性定語(yǔ)從句，先行詞是a drone?mounted lidar system；that引導(dǎo)限制性定語(yǔ)從句，先行詞是11 trees。

Ⅱ. Text?centered chunks

according to 根據(jù)……

do detailed surveying of 對(duì)……做詳細(xì)的調(diào)查

seek to do 試圖做；努力做

be pleased to do 很高興做……

pay attention to 注意……