Raw data on initial soil, forest floor, and trial details for the accelerator trial series (FR556) in Pinus radiata stands in New Zealand

<em>Authors:</em> Simeon J Smaill¹, Loretta G Garrett² and Sarah Addison² <em>Affiliation: </em>¹ Scion, PO Box 29237, Riccarton, Christchurch 8440, New Zealand; ² Scion, Private Bag 3020, Rotorua 3046, New Zealand. A data set from the Accelerator trial series (FR556) spanning 6 <em>Pinus radiata</em> forest sites in New Zealand. The data set includes initial, pre-harvest and time-zero, data on soil and forest floor and trial sub-plot details. The dataset links to the Data in Brief publication Smaill et al., (2023) which describes the sample collection and testing methods. Trial ID (e.g. FR556/1) is an individual trial identification allocated to a trial site and the PSP ID (e.g. FR556/1/1) is an individual ‘Permanent Sampling Plot’ identification allocated to a measurement plot area – both are allocated by Scion’s (New Zealand Forest Research Institute Ltd) forestry trials and permanent sampling plot databases. The data includes one file with 9 data sheets and 3 data folders: · 1_Pre-harvest soil chemistry – data by PSP ID and sample depth collected from adjacent to or within the Accelerator trial area. Data includes sampling date, sampling method and soil chemical analysis on the &lt;2 mm soil fraction. · 2_Pre-harvest soil bulk density – data by PSP ID and sample depth collected from adjacent to or within the Accelerator trial area. Data includes sampling date, sampling method and soil bulk density for &lt;2 mm and &gt;2 mm (mineral and organic) soil fraction. · 3_Pre-harvest soil microbial – data by PSP ID and sample depth collected from adjacent to or within the Accelerator trial area. Data includes sampling date, sampling method and soil micro-respiration responses to added substrates. · 4_Pre-harvest forest floor – data by PSP ID and sample type (fresh litter (L) and partly and well decomposed litter (FH), (&lt;10 cm diameter)) collected from adjacent to or within the Accelerator trial area. Data includes sampling date, sampling method, forest floor mass and chemistry analysis. · 5_Accelerator trial sub-plot details – by each PSP ID including block, plot and sub-plot ID, treatment ID and treatment at time zero, planting stock ID, slope, elevation, and slope direction. · 6_Time zero soil chemistry – data by permeant plot sample (PSP) ID and sample depth collected from a sub-set of PSP’s for the Accelerator trial. Data includes sampling date, sampling method and soil chemical analysis on the &lt;2 mm soil fraction. · 7_Time zero soil bulk density – data by PSP ID and sample depth collected from a sub-set of PSP’s for the Accelerator trial. Data includes sampling date, sampling method and soil bulk density for &lt;2 mm and &gt;2 mm (mineral and organic) soil fraction. · 8_Time zero soil microbial – data by PSP ID and sample depth collected from a within the Accelerator trial area. Data includes sampling date, sampling method and soil micro-respiration responses to added substrates. · 9_Time zero soil profile – data by PSP ID collected from a sub-set of PSP’s for the Accelerator trial. Data includes soil horizon description and New Zealand soil classification. · Folder FR556_MIR spectra: FR556 trial soil Mid-Infrared spectra opus files by sample ID. · Folder FR556_MIR spectra_csv: FR556 trial soil Mid-Infrared spectra csv files by sample ID. · Folder FR556_soil profile images: FR556 trial soil profile image files by trial site ID. Contact: Loretta Garrett ([e-mail]) <strong>Acknowledgments</strong> Funding to publish the data came from the Resilient Forest program, which is funded by New Zealand Ministry of Business, Innovation &amp; Employment (MBIE) Strategic Science Investment Fund, and in part by the New Zealand Forest Growers Levy Trust (C04X1703). Data collection was funded by the “Growing Confidence in Forestry’s Future” research programme, which is jointly funded by the New Zealand Ministry of Business Information and Employment (MBIE) and the New Zealand Forest Growers Levy Trust (C04X1306). Funding for the soil spectroscopy testing came from the Resilient Forest program (C04X1703) and the Tree-Root-Microbiome programme, which is funded by MBIE’s Endeavour Fund and in part by the New Zealand Forest Growers Levy Trust (C04X2002). <strong>References</strong> Smaill, S.J., Garrett, L.G., Addison, S.A. (2023). Accelerator trial series in <em>Pinus radiata</em> stands in New Zealand: Trial establishment, site description and initial soil, forest floor and tree data. Data in Brief, <em>in press. </em> <strong>Disclaimer</strong> We make no warranties regarding the accuracy or integrity of the Data. We accept no liability for any direct, indirect, special, consequential or other losses or damages of whatsoever kind arising out of access to, or the use of the Data. We are in no way to be held responsible for the use that you put the Data to. You rely on the Data entirely at your own risk.

<em>作者：</em>Simeon J Smaill¹、Loretta G Garrett²与Sarah Addison² <em>附属机构：</em>¹ 新西兰林业研究所有限公司（Scion），新西兰基督城里卡顿，邮政信箱PO Box 29237，邮编8440；² 新西兰林业研究所有限公司（Scion），新西兰罗托鲁瓦，Private Bag 3020，邮编3046。

本数据集隶属于加速器试验系列（Accelerator trial series）编号FR556，覆盖新西兰境内6个<em>辐射松（Pinus radiata）</em>人工林样地。数据集包含采伐前、试验零时刻的土壤、林地枯落物层数据以及试验小样地详情。本数据集关联发表于《Data in Brief》的Smaill等人（2023）研究，其中详细阐述了样品采集与检测方法。

试验编号（Trial ID，例如FR556/1）是分配给单个试验样地的唯一标识，永久抽样样地编号（Permanent Sampling Plot, PSP ID，例如FR556/1/1）是分配给单个测量样地的标识，二者均由新西兰林业研究所有限公司（Scion）的林业试验与永久抽样样地数据库分配。

本数据集包含1个整合了9个数据表与3个数据文件夹的文件，具体如下：
· 1_采伐前土壤化学性质：按PSP编号与采样深度整理，采集自加速器试验区域邻近或内部区域。数据包含采样日期、采样方法以及<2 mm土壤组分的土壤化学分析结果。
· 2_采伐前土壤容重：按PSP编号与采样深度整理，采集自加速器试验区域邻近或内部区域。数据包含采样日期、采样方法以及<2 mm和>2 mm（矿质与有机）土壤组分的土壤容重数据。
· 3_采伐前土壤微生物：按PSP编号与采样深度整理，采集自加速器试验区域邻近或内部区域。数据包含采样日期、采样方法以及外加底物下的土壤微呼吸响应数据。
· 4_采伐前林地枯落物层：按PSP编号与样品类型（新鲜凋落物（L层）、半分解与充分分解凋落物（FH层），直径<10 cm）整理，采集自加速器试验区域邻近或内部区域。数据包含采样日期、采样方法、枯落物层生物量及化学分析结果。
· 5_加速器试验小样地详情：按各PSP编号整理，包含区组、样地与小样地编号、处理编号与零时刻处理措施、造林材料编号、坡度、海拔与坡向。
· 6_零时刻土壤化学性质：按PSP编号与采样深度整理，采集自加速器试验部分PSP。数据包含采样日期、采样方法以及<2 mm土壤组分的土壤化学分析结果。
· 7_零时刻土壤容重：按PSP编号与采样深度整理，采集自加速器试验部分PSP。数据包含采样日期、采样方法以及<2 mm和>2 mm（矿质与有机）土壤组分的土壤容重数据。
· 8_零时刻土壤微生物：按PSP编号与采样深度整理，采集自加速器试验区域内部。数据包含采样日期、采样方法以及外加底物下的土壤微呼吸响应数据。
· 9_零时刻土壤剖面：按PSP编号整理，采集自加速器试验部分PSP。数据包含土壤发生层描述与新西兰土壤分类结果。
· 文件夹FR556_MIR spectra：FR556试验土壤中红外光谱（Mid-Infrared spectra, MIR）opus格式文件，按样品ID命名。
· 文件夹FR556_MIR spectra_csv：FR556试验土壤中红外光谱csv格式文件，按样品ID命名。
· 文件夹FR556_soil profile images：FR556试验土壤剖面图像文件，按试验样地ID命名。

<em>联系方式：</em>Loretta Garrett（邮箱：[e-mail]）

<strong>致谢</strong>：本数据出版经费由韧性森林计划（Resilient Forest program）资助，该计划由新西兰商业、创新与就业部（Ministry of Business, Innovation & Employment, MBIE）战略科学投资基金资助，并由新西兰林农征收信托（New Zealand Forest Growers Levy Trust, C04X1703）部分资助。数据采集经费由“提升林业未来信心”研究计划资助，该计划由新西兰商业、创新与就业部（MBIE）与新西兰林农征收信托（C04X1306）联合资助。土壤光谱检测经费由韧性森林计划（C04X1703）与树-根-微生物组计划（Tree-Root-Microbiome programme）资助，后者由MBIE的奋进基金（Endeavour Fund）资助，并由新西兰林农征收信托（C04X2002）部分资助。

<strong>参考文献</strong>：Smaill, S.J., Garrett, L.G., Addison, S.A. (2023). 新西兰辐射松（Pinus radiata）人工林加速器试验系列：试验建立、样地描述与初始土壤、林地枯落物层及林木数据. 《Data in Brief》, 即将刊出.

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