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Old 07-24-2011, 08:34 PM   #1
mygirl36ik
 
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Default 暖化+白蟻衝擊扭葉松恐絕跡

研究報告整天說出,受到氣候變遷和甲蟲攻擊影響,北美西部森林常見的高聳狹長扭葉松(lodg epole pine) 扭力校正器,恐在未來數十年消失。
這類松樹韌性強、適應力好,在極冷且易發生野火地區尤其多見。不過,美國和加拿大的研究同事表示,溫暖乾燥 氣候加上蟲害關鍵,使得越來越多區域的扭葉松死亡。
刊於「氣候變遷」(Climatic Change)期刊的這篇研究說出,到2020年,西北太平洋地區的扭葉松將減少8%,屆時,「連續的氣候 變遷以及白蟻蟲害將加快這類樹木消失的速度」。
報告指出:「預測到了2080年,俄勒岡州、華盛頓州及愛達荷州將幾乎看不到扭葉松的蹤跡。」
美國印地安人曾使用這重新高重新直的樹搭建帳蓬。這種樹不僅廣被用來製成柱子和籬笆 防爆工具,也是大型野生動物的棲息地。
研究也展現,黃石國家公園和少數其他高海拔地點的扭葉松,預料能逃過一劫。
這項研究由美國國家航空暨太空總署(NASA)及加拿大自然科學及研究委員會(Natural Sciences andEngineering Research Council of Canada)贊助推動。

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