英语听力精选进阶版 13654
时间：2019-06-03 08:29:36
搜索关注在线英语听力室公众号：tingroom，领取免费英语资料大礼包。
（单词翻译）
Frankincense under threat, says study
Summary
26 December 2011
Researchers in the Netherlands say that frankincense, a significant item in the Christmas story, faces an uncertain future. In the Journal of Applied2 Ecology, they warned that the production of the fragrant3 substance could decline by half over the next 15 years.
Reporter
Victoria Gill
religious ceremony
Frankincense is used in religious ceremonies throughout the world
Report
Frankincense is burned in religious ceremonies throughout the world. The sweet-smelling incense1 is produced from resin4 tapped from the Boswellia tree, which grows in the drylands of Africa and the Arabian peninsula.
But this delicate tree is struggling to sustain itself.
The team monitored the survival and growth of more than 6,000 Boswellia trees in Ethiopia. They used the data to model the changing population of the trees and discovered that this was declining dramatically.
Tapping trees for resin doesn't affect their survival at all. Instead, young trees often fail to get established as they're eaten by livestock5 or pushed out by faster-growing species.
The scientists say that Boswellia plantations6 should be carefully protected for up to 10 years while the saplings mature. Measures like this could safeguard the future of a product that's been traded since long before the time of the Christmas story.
Victoria Gill
分享到：
收听单词发音 
