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Method for measuring tree stem respiratory

A tree trunk and soil respiration technology, applied in the research field of tree metabolic activity, can solve problems such as incompatibility, inflexible measurement device, long measurement time period, etc., and achieve the effects of easy portability, time-saving measurement process, and short measurement time period.

Inactive Publication Date: 2005-02-09
SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: the measurement time period is long, a special device for measuring trunk respiration is required, the measurement device is not flexible, and does not adapt to the requirements of the field environment

Method used

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  • Method for measuring tree stem respiratory
  • Method for measuring tree stem respiratory
  • Method for measuring tree stem respiratory

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The experimental site is located in the No. 1 standard site of the Baishan Forest Ecosystem Research Station of the Chinese Academy of Sciences. The geographical location is 128°28′E, 42°24′N, and the altitude is 736m. The average temperature is -16.7~-18.6℃, and the average temperature of the hottest month (July) is 17.4~20.7℃. This area belongs to the temperate continental humid monsoon climate zone and is the natural distribution area of ​​broad-leaved Korean pine forest. The soil is dark brown forest soil, and the climate is a temperate continental climate affected by monsoons. It is dry and windy in spring, hot and rainy in summer, and dry and cold in winter. The annual rainfall is 726.3 mm, mainly concentrated in June to August, and the frost-free period is about 109 days. In this study, the dominant species of broad-leaved Korean pine forest in Changbai Mountains, Korean pine and Quercus mongolica, were selected as test materials.

[0018] The mensuration of tru...

Embodiment 2

[0026] For larger trunks (diameter greater than 25cm), the present embodiment does not need to make the end of the connecting pipe into an arc, because the trunk surface is flat.

Embodiment 3

[0028] Less than 25cm for the trunk diameter, greater than the trees of 10cm, a section of the PVC pipe will be made into an arc in the present embodiment, so that its curved radian is close to the trunk surface.

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Abstract

The present invention relates to the research of tree metabolism activity, and is especially the method of measuring tree trunk. One connecting ring is used with one end set on the surface of tree trunk and the other end connected horizontally with the soil breath air chamber. The soil breath air chamber is connected with the connecting ring via sealing sponge cushion hermetically, and the tree trunk is connected to the connecting ring with waterproof sealing silicone glue. The method is simple, precise, short in measuring period, flexible and suitable for field measurement and needs no special tree trunk breath measuring device.

Description

technical field [0001] The invention relates to the research on tree metabolic activity, in particular to a method for measuring trunk respiration. Background technique [0002] Studies of tree metabolic activity have traditionally focused on tree leaves as indicators of overall tree metabolism. However, respiration continues to occur in all living tissues of a tree, and trunk respiration measurement is very important in the study of ecosystem carbon cycle. The carbon cycle affects ecosystem carbon and energy balances, CO 2 Emissions are related to future climate change and are a core content of current global change research. It is estimated that trunk respiration accounts for 13% to 42% of total forest aboveground carbon in mature forests. CO emission from xylem tissue of an adult tree 2 The amount exceeds the amount of leaf respiration. It has been reported abroad that the total annual trunk and branch respiration in poplar forests exceeds leaf respiration by 2.5 tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3563
Inventor 王淼姬兰柱郝占庆
Owner SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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