Maps developed using Akima’s interpolation method, and representing average data for trees aged 13 and 22 years, were used to compare patterns of within-tree variation for Pinus taeda L. (loblolly pine) tracheid properties: coarseness ( C ), specific surface ( S ), radial ( R ) and tangential ( T ) diameter and wall thickness ( w ). SilviScan-calibrated near-infrared (NIR) spectroscopy provided data for the analysis with C ( R c 2 = 0.85, R p 2 = 0.85), S ( R c 2 = 0.83, R p 2 = 0.76), and w ( R c 2 = 0.89, R p 2 = 0.93) models having very good calibration / prediction statistics, while those for T and R diameter were moderate ( R c 2 = 0.79, R p 2 = 0.57) and poor ( R c 2 = 0.64, R p 2 = 0.19), respectively. C , S , and w maps were similar to the density maps for P. taeda and indicate the properties increase radially at all heights. The T diameter map was similar to maps reported for microfibril angle except that T diameter increased radially and with height whereas microfibril angle decreased radially and with height. The map for R diameter increased with height and was unlike the other properties examined; caution is recommended regarding any interpretations based on the R diameter map owing to the weak statistics observed for the NIR model. Changes observed between the two ages are consistent with the asymptotic progression of properties associated with maturation.

中文翻译：

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火炬松不同龄期全树管胞特性图

使用 Akima 的插值方法开发的地图并代表 13 年和 22 年树龄的平均数据，用于比较火炬松（火炬松）管胞特性的树内变异模式：粗糙度 (C)、比表面积 (S) )、径向 ( R ) 和切向 ( T ) 直径和壁厚 ( w )。SilviScan 校准的近红外 (NIR) 光谱为 C ( R c 2 = 0.85, R p 2 = 0.85)、S ( R c 2 = 0.83, R p 2 = 0.76) 和 w ( R c 2 = 0.89, R p 2 = 0.93) 模型具有非常好的校准/预测统计数据，而 T 和 R 直径的模型中等（R c 2 = 0.79，R p 2 = 0.57）和差（R c 2 = 0.64 , R p 2 = 0.19)，分别。C 、 S 和 w 地图类似于 P. taeda 的密度地图，并表明属性在所有高度呈放射状增加。T 直径图类似于微纤维角度报告的图，除了 T 直径径向和高度增加，而微纤维角度径向和高度减小。R 直径的图随着高度的增加而增加，并且与检查的其他属性不同；由于 NIR 模型观察到的统计数据较弱，因此建议对基于 R 直径图的任何解释保持谨慎。在两个年龄之间观察到的变化与与成熟相关的特性的渐近进展一致。由于 NIR 模型观察到的统计数据较弱，因此建议对基于 R 直径图的任何解释保持谨慎。在两个年龄之间观察到的变化与与成熟相关的特性的渐近进展一致。由于 NIR 模型观察到的统计数据较弱，因此建议对基于 R 直径图的任何解释保持谨慎。在两个年龄之间观察到的变化与与成熟相关的特性的渐近进展一致。