年轮元素分析系统在中科院寒旱所安装运行

日前，由北京易科泰生态技术有限公司独家代理的Multiscanner年轮元素分析系统在寒旱所公共实验室平台完成安装调试和使用培训，这是目前国际上功能最为强大的集X-光密度成像（CT）和XRF元素分析的年轮分析平台。

MultiScanner年轮元素分析系统同时采用了XRF元素分析技术和X-射线数码成像技术（CT），用于树木年轮密度和元素分析。可测量的元素有Al、Si、P、S、Cl、K、Ca、Ti、Cr、Mn、Fe、Ni、Cu、Zn、As、Rb、Sr、Hg、Pb等。其著名的同类产品为用于岩石样芯、沉积样芯密度与元素分析的CoreScanner。

下图是对某一年轮样品CT/XRF分析结果，包括光学成像、X-光密度成像（CT，中间的高分辨率黑白图像）及Ca在不同年轮中的浓度分布（蓝色曲线）。

MultiScanner不仅用于一般的年轮分析和古气候、环境变迁等研究分析，Yvonne Fors等在2014年的《Nature》上还发表了应用于海洋考古学研究的论文“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对加拿大不列颠哥伦比亚中西部河流不同树木年轮宽度和密度进行了分析，并据此重建了到AD1660年的年轮水文气候，研究成果发表在《Hydrological Processes》（Dendrohydroclimate reconstructions of July–August runoff for two nival-regime rivers in west central British Columbia）。

Charlotte等（2006）利用MultiScanner对森林树木样品年轮密度及Mn元素和Bi元素进行了分析，以揭示气候变化对树木生长的影响。研究成果发表在《Applied Geochemistry》（A dendrochemical study of Pinus sylvestris from Siljansfors Experimental Forest, central Sweden）。 

下面这则案例则利用Multiscanner研究分析重金属污染对树木生长的影响。

参考文献

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