Spectral data forest plots

These are spectral data obtained through FTIR analysis of charcoal fragments. The filenames are set up as follows: "Abbreviation of the site name"_"Corenumber"_"Depth interval"_"Charcoal fragment number" The abbreviations of the site names are: AMA, for Amacayacu. CC, for Cocha Cashu. Gig, for Gigante. LA, for Los Amigos. Y, for Yasuni. Teotonio is not abbreviated, so samples from this site start with "Teotonio". All samples from Yasuni have an additional number within their abbreviation. This number stands for the location within the Yasuni area, since samples were taken from multiple different sites. This is only the case for Yasuni, since the other sample sites had their samples taken within a single area. The data found in the .csv files are absorbance values obtained through FTIR analysis. Each .csv file represents one charcoal fragment from a certain site, core and depth that was exposed to infrared light (IR) at a range of wavenumbers between 900λ to 3500λ. Wavenumbers are the amount of waves of light that occur per centimeter. For each wavenumber, the absorbance of the IR-light by the charcoal fragment is measured and noted down.本数据集为通过傅里叶变换红外光谱（FTIR）分析炭屑碎片所获得的光谱数据。 文件名命名规则如下：「遗址名称缩写」_「岩芯编号」_「深度区间」_「炭屑碎片编号」 各遗址名称缩写对应关系如下：AMA代表Amacayacu，CC代表Cocha Cashu，Gig代表Gigante，LA代表Los Amigos，Y代表Yasuni。Teotonio无专属缩写，因此该遗址的样本均以"Teotonio"作为开头。所有Yasuni遗址的样本缩写中额外带有一位数字，该数字代表其在Yasuni区域内的采样点位——因该遗址的样本采自多个不同点位；其余采样遗址的样本均采自单一区域，故无需额外添加点位编号。 .csv文件内存储的数据为通过FTIR分析得到的吸光度值。每个.csv文件对应一份采自特定遗址、岩芯及深度的炭屑碎片，该样本在900λ至3500λ的波数范围内接受红外光（IR）照射。波数指每厘米长度内的光波数量，针对每个波数，均会测量并记录炭屑碎片对红外光的吸光度。