Journal of Siberian Federal University. Biology / A New Approach to Measuring Tree-Ring Density Parameters

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Issue
Journal of Siberian Federal University. Biology. 2022 15 (4)
Authors
Silkin, Pavel P.; Kirdyanov, Alexander V.; Krusic, Paul J.; Ekimov, Mikhail V.; Barinov, Valentin V.; Büntgen, Ulf
Contact information
Büntgen, Ulf: University of Cambridge Cambridge, United Kingdom; ORCID: 0000-0002-3821-0818; Silkin, Pavel P.: Branch of the Institute of Natural and Technical Systems in Sochi Sochi, Russian Federation; ; ORCID: 0000-0001-7042-822X; Kirdyanov, Alexander V.: Sukachev Institute of Forest SB RAS FRC “Krasnoyarsk Science Center SB RAS” Krasnoyarsk, Russian Federation; Siberian Federal University Krasnoyarsk, Russian Federation; ORCID: 0000-0002-6797-4964; Krusic, Paul J.: University of Cambridge Cambridge, United Kingdom; ORCID: 0000-0001-5358-9697; Ekimov, Mikhail V.: Sochi State University Sochi, Russian Federation; ORCID: 0000-0001-8650-7459; Barinov, Valentin V.: Siberian Federal University Krasnoyarsk, Russian Federation; ORCID: 0000-0002-3582-3440
Keywords
PiC densitometry; anatomical densitometry; x-ray densitometry; tree-rings; density profile
Abstract

Tree rings are the most reliable high-resolution proxy archive for past climate and environmental changes, and X‑ray densitometry is an important tool, which significantly expands the possibilities of dendroecology and dendroclimatology. The classic X‑ray densitometric laboratory DENDRO 2003 with all its advantages, however, has a number of drawbacks, such as its high price, installation size, requirement of X‑ray films and experienced technical staff, etc., which forces one to look for alternatives. The paper presents a new methodological approach to measuring wood density, developing tree-ring density profiles, and constructing tree- ring density chronologies. The proposed method – contrast densitometry (PiC densitometry) – is based on the pixel contrast in a high- resolution image of ring structures. Initial experimental tests using a specially developed demonstrator showed the strength and functionality of our approach, which produced results comparable to those derived by the traditional X‑ray DENDRO 2003 technique. This new methodology is capable of replacing traditional DENDRO 2003 applications in a wide range of dendroecological and dendroclimatic studies

Pages
441–455
DOI
10.17516/1997-1389-0397
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/149456

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