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Fast analysis method of tree annual ring composing ingredient

A technology of composition and tree rings, applied in the field of measurement, can solve the problems of time-consuming and labor-intensive, low automatic identification accuracy, etc., and achieve the effects of improving measurement accuracy, solving low automatic identification accuracy, and solving time-consuming and labor-intensive problems.

Inactive Publication Date: 2009-05-27
ANHUI AGRICULTURAL UNIVERSITY
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Problems solved by technology

The rapid analysis method of the composition of tree rings not only solves the problem of time-consuming and labor-intensive manual operation, but also solves the problem of low accuracy of automatic recognition, which saves a lot of time for researchers and improves the measurement accuracy

Method used

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  • Fast analysis method of tree annual ring composing ingredient
  • Fast analysis method of tree annual ring composing ingredient
  • Fast analysis method of tree annual ring composing ingredient

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Embodiment Construction

[0012] The formation of tree rings is the result of periodic growth of tree cambium by external seasonal changes. The micro-density data of a series of measurement points obtained by micro-densitometer and image analysis needs to be further processed. The main problem is the division of the growth ring boundary and the boundary between early and latewood. According to the characteristics of different wood growth rings, the threshold method and the gradient method are used respectively for automatic interpretation or manual and automatic combination to determine the ring boundary and the boundary of early and late wood. figure 1 It is a schematic diagram of calculation of annual ring composition, N point is the boundary point of annual rings, and point M is the boundary point of early and late wood. The annual ring width is the distance between adjacent ring boundary points, and the annual ring density is the integral of the density of each point in the annual ring. After the ...

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Abstract

Disclosed is a tree-ring composition rapid analysis method, particularly a rapid measuring method for tree-ring width and tree-ring density, belonging to the measuring field. The tree-ring composition rapid analysis method is to delete the false tree-ring and insert the broken tree-ring in automatic judgement and human-computer interaction mode, and to once read the parameters like tree-ring number, tree-ring width, tree-ring average density, maximum density, minimum density, early wood density, late wood density, early wood width, late wood width, and late wood rate. The method can be used for analyzing the density data measured by the tree-ring density instrument, and can also be used for analyzing the density data measured by the tree-ring digitized map. The tree-ring composition rapid analysis method solves the problem of identifying complex tree-ring, improves the measuring accuracy, in addition, the conventional manual operation that takes both time and effort can be replaced, thereby saving a large amount of time and effort for the tree-ring students.

Description

Technical field: [0001] The invention belongs to the field of measurement, in particular to a rapid measurement and analysis method for tree ring width and tree ring density. Background technique: [0002] The formation of tree rings is the result of periodic growth of tree cambium by external seasonal changes. Because trees are affected by various factors such as physiology, climate, site, and human during the growth and development process, even the same tree species has different characteristics in different site conditions and different regions. Reasonable breeding and directional breeding can be carried out to achieve the purpose of material improvement. Trees are an important part of the ecosystem. Using tree ring data to obtain past climate and environmental changes is an important part of the Climate Change and Predictability Research Program (CLIVAR), and it is also an important technology for past global change studies (PAGES) one of the ways. The measurement an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/84G01B11/00G01N33/00
Inventor 夏萍刘盛全印崧陈黎卿吴玉月
Owner ANHUI AGRICULTURAL UNIVERSITY
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