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Device and method for measuring respiration of tree branches and leaves

A branch and leaf technology, which is applied in the field of plant physiological condition determination equipment, can solve the problems of tissue damage, large errors, and few equipment in the measurement

Pending Publication Date: 2021-09-07
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. In the prior art, there are few devices for measuring the respiration of branches and leaves, especially there is no device that can continuously measure the respiration of branches and leaves of tall forest trees in situ;
[0007] 2. It is very inconvenient to measure the respiration of branches and leaves of tall trees in situ, and it is dangerous at high places of tall trees, such as 8m and above
[0008] 3. Most of them use atmospheric CO 2 Monitoring methods such as eddy correlation method for rough estimation, or using Li-6400 for in vitro measurement, will cause damage to the measurement tissue, resulting in large errors

Method used

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  • Device and method for measuring respiration of tree branches and leaves
  • Device and method for measuring respiration of tree branches and leaves
  • Device and method for measuring respiration of tree branches and leaves

Examples

Experimental program
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Embodiment 1

[0076] See Figure 1 to 8 . A device for determining forest wood branches and blade breathing, including a system 600, a breathing cartridge, and a pipe 601 that connects to the assay system and a breathing cartridge, including at least one branches or / and The via holes passing through the blade; in this embodiment, two through holes are provided on the breathing cartridge, and the two through holes are simultaneously used to secure the device on the branches, which is a fixed hole 101. The size of the fixing hole 101 is comparable to the diameter of the branches to be tested. In order not to affect the respiration and photosynthesis of branches and leaves, in this example, the breathing cartridge is an on / off transparent breathing cartridge, that is, a breathing cartridge that can be turned on and off can be made of transparent glass and resin material. The breathing cartridge is a normally open state to ensure that the air inside and outside the breathing box can be circulate...

Embodiment 2

[0087] In this example, the method of determination of forest tree branches and blade respiration, including the following steps:

[0088] S1 select a specific branch and leaves as a target object for determination, and install the assay forest branches and blade breathing on the branch to be tested, such a target object is located within the breathing cartridge;

[0089] S2 Calculate the target object area: The leaf area in the breathing ring is obtained by the digital image processing method, such as using the image of the photo to calculate the leaf area by Photoshop; calculate the branch surface area within the respiratory ring by formula:

[0090]

[0091] S = πR 2 + πR 2 + πrl + πrl = π (r 2 + R 2 + RL + RL) (Formula II)

[0092] Among them, the R-upper end radius, R-lower end radius, H-branches long, L-bus.

[0093] S3 intersect the leaves area and branch surface area in the S2 as the total area of ​​the instrument input instrument parameters;

[0094] S4 based on the OFF...

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Abstract

The invention discloses a device and method for measuring the respiration of tree branches and leaves. The device for measuring the respiration of the tree branches and leaves comprises a measuring system, a respiration box and a pipeline connecting the measuring system and the respiration box, the respiration box comprises at least one through hole allowing the tree branches or / and the leaves to penetrate through; the breathing box is an opening / closing type transparent breathing box. The breathing box is set to be normally open, the measuring system is started and the breathing box is closed for 1 minute every 1 unit time, single-time breathing measuring data are acquired, and then the breathing box is opened again. Atmospheric CO2 monitoring methods are mostly adopted in the prior art, and errors are large. According to the invention, CO2 generated by branch and leaf respiration is subjected to in-situ measurement, the leaf area and the branch surface area in the device are calculated, the CO2 emission amount of branches and leaves is subjected to long-term positioning and accurate measurement, and accurate data of carbon emission of branch and leaf respiration can be obtained.

Description

Technical field [0001] The present invention belongs to the field of plant physiological condition determination apparatus, an apparatus and method measuring tree branches and leaves breathing. Background technique [0002] Forest as the main terrestrial ecosystems, its huge carbon reserves can not be ignored. The branches and leaves of trees during the growing season is growth and maintenance of the main organs of physiological activities, which produces carbon dioxide can not be ignored. [0003] Some studies show that trees from respiration can consume more than half of its own photosynthesis fixed carbon dioxide. Thus understanding forest carbon flux leaves and twigs breathing, carbon dioxide further understanding and accurate understanding of forest growth and metabolism produced important. But there is less research on domestic branches and leaves breathing. [0004] Currently, most research respiratory tree branches and leaves for the ex vivo measurement series using Li-64...

Claims

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Application Information

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IPC IPC(8): G01N33/00
CPCG01N33/0098Y02E10/72
Inventor 贾忠奎李龙杰王相震王利东司瑞雪刘彦清李岩彭志杰陆景星朱丽亚
Owner BEIJING FORESTRY UNIVERSITY