In-situ measuring method and device for solum carbon dioxide flux

A carbon dioxide and measurement method technology, applied in the direction of measurement devices, land use policy measures, color/spectral characteristics measurement, etc., can solve the problems of time-consuming, manpower and material resources for transporting samples, and achieve the effect of less interference and actual measurement

Inactive Publication Date: 2008-02-27
BEIJING FORESTRY UNIVERSITY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

This measurement affects the accuracy of the measurement because it is not on-site, and it is time-consuming and consumes manpower and material resources for transporting samples.

Method used

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  • In-situ measuring method and device for solum carbon dioxide flux
  • In-situ measuring method and device for solum carbon dioxide flux
  • In-situ measuring method and device for solum carbon dioxide flux

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Embodiment Construction

[0061] Referring to Fig. 1, the in-situ measuring device of soil layer carbon dioxide flux of the present invention comprises: the drilling tool 3 of the measuring hole of getting a certain depth to underground soil layer; Put into the measuring probe 2 in described measuring hole; And pass The air inlet pipe 13 is connected to the carbon dioxide concentration analyzer 1 of the measuring probe 2 .

[0062] In order to prevent dust from entering the carbon dioxide concentration analyzer 1, a filter (not shown), such as a dust filter, can be inserted in the middle of the intake pipe 13 .

[0063] As shown on the right side of Figure 1, the drilling tool 3 can include: axial (horizontal) two ends and the lower end are respectively provided with the stopper 35 of connection port; To the two handles 34 at the two ends; the drill pipe that is connected to the stopper 35 is fixedly connected to the lower end connection port.

[0064] The above-mentioned drill pipe can be a multi-sec...

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Abstract

The invention discloses a situ determination method and device of carbon dioxide flux in soil. This invention is based on the principle of convection and diffusion between the soil and air, using scale-marked drill pipe vertically drill from the soil surface downward, obtain carbon dioxide samples from different soil depth through sampling rod, directly to the apparatus, according to the physical property that infrared has special absorption to carbon dioxide gas, regularly measure the concentration of carbon dioxide that soil of different depth released or absorbed. Substitute the concentration value of carbon dioxide at different soil depth into formula, and then flux of carbon dioxide of unit area in unit time at certain depth under standard atmospheric pressure can be obtained. The invention can be used for observations of carbon dioxide flux, detection of carbon dioxide storage under different depths in natural state, calculation of variation of carbon dioxide emission induced by land-use changes and evaluation of restore rate of plant cover and land capability.

Description

technical field [0001] The invention relates to an in-situ measurement method and device for soil carbon dioxide flux, in particular to an in-situ measurement method and device for soil carbon dioxide flux. Background technique [0002] Soil carbon dioxide is one of the main gas components of soil air, and it is also an important source or reservoir of major greenhouse gases in the atmosphere. Soil carbon dioxide flux, as an important measure of greenhouse gas exchange between land and the atmosphere, reflects the physical, chemical, and biological properties of soil and the status of human land use, underground mineral resources, and karst. Due to its contribution and impact on global climate change It is very large and has received attention and attention from all countries in the world. In order to accurately conduct carbon accounting of terrestrial ecosystems, implement the United Nations Framework Convention on Climate Change and fulfill the obligations of the Kyoto Pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/35G01N33/00G06F19/00G01N21/3563
CPCY02P60/30
Inventor 孙向阳高程达
Owner BEIJING FORESTRY UNIVERSITY
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