The Methods for Measuring the Area of Heartwood and Sapwood
نویسندگان
چکیده
The presence of heartwood is one the most important parameters in economic value that can affect final use wood. For construction materials, a large very necessary, considering this will have positive effect on basic properties Meanwhile, its proportion has negative impact quality pulp and paper. Therefore, study aims to review methods calculating area by using suitable measurement for better stand management selection raw materials industry. results showed non-destructive were developed measure heartwood-sapwood such as computer tomography (CT-image), electrical resistivity (ERT), x-ray densitometry, time-of-flight secondary ion mass spectrometry (TOF-SIMS), near-infrared spectroscopy (NIRS), so far. This different from destructive are commonly used visual inspection wood color anatomical features. During methods, factors be considered include cost, time, tree damage, number samples, efficiency applying methods. best option determining sapwood. But, when sapwood boundaries unclear, chemical indicators performed. In addition, ERT method second alternative tropics species. Furthermore, depends five limiting mentioned previously.
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ژورنال
عنوان ژورنال: Reviews in agricultural science
سال: 2023
ISSN: ['2187-090X']
DOI: https://doi.org/10.7831/ras.11.0_76