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Method for dating tree rings and device for implementing method

A technology of tree rings and tree rings, which is applied in the field of dendrology, can solve the problems of inability to establish a standard curve, damage, etc., and achieve the effect of non-destructive and accurate determination of tree age

Active Publication Date: 2016-11-09
BEIJING INST OF LANDSCAPE ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The technical problem to be solved by the present invention is to provide a method for tree ring dating and a device for realizing the method. The problem of achieving accurate age determination of old trees in urban areas, and the problem of damage to other sampled trees in the process of establishing a standard curve

Method used

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  • Method for dating tree rings and device for implementing method
  • Method for dating tree rings and device for implementing method
  • Method for dating tree rings and device for implementing method

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Effect test

Embodiment 1

[0058] Such as figure 1 As shown, the present embodiment proposes a method for tree ring dating, the method comprising:

[0059] S1. Collect samples of ancient trees to be measured;

[0060] S2, processing the collected sample;

[0061] S3, performing annual ring interpretation on the processed sample;

[0062] S4, sample annual ring dating;

[0063] S5. Obtain the primary age of the tree to be tested through the sample dating results.

[0064] In this embodiment, the age corresponding to each annual ring on the tree ring sample is measured, and the measurement result can determine the death age and the first birth age of the dead branch, the stump sample or the collected tree core sample. After determining the age of the dead branches on the living ancient trees, the age of the ancient trees can be deduced more accurately, so as to achieve the purpose of non-destructive and accurate determination of the age of the ancient trees.

[0065] preferred, such as figure 2 As ...

Embodiment 2

[0089] This embodiment proposes the device for realizing the above-mentioned method for tree ring dating, which device includes a stress wave three-dimensional imager, a saw, a growth cone, sandpaper, a stereo microscope with an electronic eyepiece (or a digital camera) and a computer;

[0090] The three-dimensional imager is used to detect the empty rot position of the trunk;

[0091] The saw is used for collecting tree wheel disc samples;

[0092] The growth cone is used to collect samples of the xylem of the trunk at the position where there is no empty rot in the trunk;

[0093] The sandpaper is used for grinding the sample;

[0094] The stereomicroscope is used to observe the processed sample and interpret the annual rings; through the electronic eyepiece (or digital camera) on it and the computer to collect digital images of the annual rings of the sample;

[0095] The computer is used to measure the growth ring width of ancient trees, and to calculate and analyze the ...

Embodiment 3

[0097] The present embodiment illustrates the specific process of the method of the present invention by actually measuring the age of dead junipers in the Old Summer Palace.

[0098] 1. Sampling time: March 26, 2016;

[0099] 2. Determination of tree species: Juniper Sabina chinensis;

[0100] 3. Quantity of test samples: 1 cypress heart sample;

[0101] 4. Testing equipment:

[0102] (1) Sampling tools: Mora brand 60cm long growth cone produced in Sweden.

[0103] (2) Data acquisition tools: tape measure, ArborSonic 3D brand stress wave three-dimensional imager.

[0104] (3) Testing instrument: Nikon SMZ800 stereo microscope.

[0105] (4) Data processing equipment: Dell desktop computer.

[0106] (5) Data processing program: Photoshop CS3, Microsoft Excel2003

[0107] 5. Measurement steps:

[0108] (1) Sample collection

[0109] First, use the stress wave three-dimensional imager to find the location of the trunk without rot;

[0110] Then, if Figure 5 As shown, t...

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Abstract

The invention relates to a method for dating tree rings and a device for implementing the method and relates to the field of age determination of trees. According to the method and the device, the problem of existing tree age determination methods that the ages of ancient trees distributed in the Beijing downtown cannot be accurately determined on the premise of not damaging the ancient trees is solved. For guaranteeing the dating accuracy, collected tree ring samples (may be tree ring disc samples or pith samples collected from growth cones) need to be interpreted at first so as to eliminate false rings, incomplete rings and broken rings, then ring width sequences of the samples are measured by using a computer, a standard ring width sequence of the samples is calculated, and the age of each tree ring is determined according to a binary regression analysis result of a ring width standard curve and the standard ring width sequence of the samples. The method is suitable for dating tree rings and determining the age of the all trees planted in open fields in the 5th Ring Road of Beijing.

Description

technical field [0001] The invention relates to dendrology, in particular to the field of tree age determination. Background technique [0002] Since the growth of trees is affected by the environmental conditions in which they grow, trees growing in the same ecological environment experience the same process of environmental change. Therefore, for the same tree species in the same ecological environment, the change in growth should be the same or similar. [0003] As long as several individuals of a certain tree species are measured in the same ecological zone, the age of narrow and wide rings in the annual rings of this tree species can be known, and the standard curve of the tree species in this ecological environment zone can be made. The annual variation trend of the annual ring width of other trees of the same species living in China should be the same as this standard curve. [0004] At present, the more commonly used tree age determination method is: tree ring cros...

Claims

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Application Information

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IPC IPC(8): G01N21/84
CPCG01N21/84G01N2021/8466
Inventor 巢阳李锦龄丛日晨卜向春
Owner BEIJING INST OF LANDSCAPE ARCHITECTURE
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