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瑞典發(fā)現(xiàn)萬年古樹 創(chuàng)造吉尼斯世界紀錄
Swedish researchers find world's oldest living tree
[ 2008-04-22 09:28 ]

瑞典發(fā)現(xiàn)萬年古樹 創(chuàng)造吉尼斯世界紀錄

Swedish researchers find world's oldest living tree

The world's oldest living tree on record is a nearly 10,000 year-old spruce that has been discovered in central Sweden, Umeaa University said on Thursday.

Researchers had discovered a spruce with genetic material dating back 9,550 years in the Fulu mountain in Dalarna, according to Leif Kullmann, a professor of Physical Geography at the university in northwestern Sweden.

That would mean it had taken root in roughly the year 7,542 BC.

"It was a big surprise because we thought until (now) that this kind of spruce grew much later in those regions," he said.

Scientists had previously believed the world's oldest trees were 4,000 to 5,000 year-old pine trees found in North America.

The new record-breaking tree was discovered in Dalarna in 2004 when Swedish researchers were carrying out a census of tree species in the region, Kullman said.

The tree's genetic material age had been calculated using carbon dating at a laboratory in Miami, Florida.

Spruces, which according to Kullmann offer rich insight into climate change, had long been regarded as relatively newcomers in the Swedish mountain region.

The discovery of the ancient tree had therefore led to "a big change in our way of thinking," he said.

 

(Agencies)

位于瑞典西北部的優(yōu)密歐大學于上周四公布,(研究人員)在瑞典中部發(fā)現(xiàn)了一棵有近萬年樹齡的云杉,據(jù)考證這棵云杉是目前世界上現(xiàn)存的最古老的樹。

該大學的自然地理學教授雷夫?卡爾曼說,研究人員在位于瑞典達拉那的浮露山上發(fā)現(xiàn)了一棵攜帶有9550年前遺傳物質的云杉。

由此推算,這棵樹是在約公元前7542年開始生根的。

卡爾曼教授說:“這個發(fā)現(xiàn)讓我們很意外,因為我們一直認為這種云杉是在很多年后才開始在這一帶生長的?!?/font>

此前,科學家們一直認為目前世界上最古老的樹是在北美發(fā)現(xiàn)的松樹,這些樹已有四五千年歷史。

卡爾曼說,這棵“打破紀錄”的樹是2004年瑞典研究人員在達拉那一帶進行樹種調查時發(fā)現(xiàn)的。

美國佛羅里達州邁阿密的一個實驗室采用碳測年法計算出了它的樹齡。

據(jù)卡爾曼介紹,云杉這種植物對氣候變化十分敏感,而且長期以來一直被視為瑞典山區(qū)的“外來樹種”。

而這顆古樹的發(fā)現(xiàn)“大大改變了我們的看法”。

點擊查看更多雙語新聞

(英語點津Helen 姍姍編輯)

 

Vocabulary:  

carbon dating:a chemical analysis used to determine the age of organic materials based on their content of the radioisotope carbon-14; believed to be reliable up to 40,000 years(碳測年)

 

 
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