年輪元素分析系統(tǒng)在中科院寒旱所安裝運(yùn)行

日前，由北京易科泰生態(tài)技術(shù)有限公司*代理的Multiscanner年輪元素分析系統(tǒng)在寒旱所公共實(shí)驗(yàn)室平臺(tái)完成安裝調(diào)試和使用培訓(xùn)，這是目前上功能zui為強(qiáng)大的集X-光密度成像（CT）和XRF元素分析的年輪分析平臺(tái)。  

MultiScanner年輪元素分析系統(tǒng)同時(shí)采用了XRF元素分析技術(shù)和X-射線數(shù)碼成像技術(shù)（CT），用于樹木年輪密度和元素分析。可測量的元素有Al、Si、P、S、Cl、K、Ca、Ti、Cr、Mn、Fe、Ni、Cu、Zn、As、Rb、Sr、Hg、Pb等。其的同類產(chǎn)品為用于巖石樣芯、沉積樣芯密度與元素分析的CoreScanner。
下圖是對某一年輪樣品CT/XRF分析結(jié)果，包括光學(xué)成像、X-光密度成像（CT，中間的高分辨率黑白圖像）及Ca在不同年輪中的濃度分布（藍(lán)色曲線）。

MultiScanner不僅用于一般的年輪分析和古氣候、環(huán)境變遷等研究分析，Yvonne Fors等在2014年的《Nature》上還發(fā)表了應(yīng)用于海洋考古學(xué)研究的論文“Sulfur and iron accumulation in three marine-archaeological shipwrecks in the Baltic Sea: The Ghost, the Crown and the Sword "
Colette等（2013）利用MultiScanner對加拿大不列顛哥倫比亞中西部河流不同樹木年輪寬度和密度進(jìn)行了分析，并據(jù)此重建了到AD1660年的年輪水文氣候，研究成果發(fā)表在《Hydrological Processes》（Dendrohydroclimate reconstructions of July–August runoff for two nival-regime rivers in west central British Columbia）。
Charlotte等（2006）利用MultiScanner對森林樹木樣品年輪密度及Mn元素和Bi元素進(jìn)行了分析，以揭示氣候變化對樹木生長的影響。研究成果發(fā)表在《Applied Geochemistry》（A dendrochemical study of Pinus sylvestris from Siljansfors Experimental Forest, central Sweden）。 

下面這則案例則利用Multiscanner研究分析重金屬污染對樹木生長的影響。

參考文獻(xiàn)
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