Experimental device and method for determining soil respiration action in drying process

A technology of soil respiration and experimental equipment, which is applied in the direction of soil material testing and material inspection products, can solve the problems of lack of measurement of soil respiration, too expensive gas chromatography detection instruments, lack of restricting scientific research work, etc., to achieve experimental results The method is simple and easy to operate, easy to assemble, and the effect of reducing equipment cost

Inactive Publication Date: 2012-06-20
DONGHUA UNIV
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  • Abstract
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Problems solved by technology

However, there is still a lack of simple and feasible experimental devices for the determination of soil respiration during drought. Gas chromatography and CO 2 Methods such as sensors involve overly expensive detection instruments
[0005] The lack of experimental equipment restricts the in-depth advancement of scientific research in related fields

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  • Experimental device and method for determining soil respiration action in drying process
  • Experimental device and method for determining soil respiration action in drying process

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Embodiment Construction

[0027] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0028] Such as figure 1 As shown, the experimental device of the present invention includes a chassis 1, a transparent sealing cover 4, a silica gel desiccator 2, a CO 2 Absorption bottle 3, a transparent sealing cover 4 is covered on the top of the chassis 1 to form a hollow cylindrical experimental container, and experimental soil is placed on the chassis 1; a detachable thermometer is installed on the inside of the side of...

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Abstract

The invention relates to an experimental device and an experimental method for determining the soil respiration action in a drying process. The experimental device comprises a base plate, a transparent sealing cover, a silica gel drier, and a CO2 absorption bottle, and the transparent sealing cover is covered on the base plate; the center of the upper surface of the transparent sealing cover is provided with an air pumping/discharging port; the silica gel drier is suspended below the air pumping/discharging port; and the CO2 absorption bottle is arranged near the side of the base plate. The experimental method comprises the following steps of: placing experimental soil on the base plate, and filling a NaOH solution in the CO2 absorption bottle; covering the transparent sealing cover, and pumping by using a manual air pump; dripping a BaCl2 solution into the CO2 absorption bottle by using a pinhole injector; quickly taking the fixed absorption liquid and filtering, and dripping the unreacted NaOH solution by using HCL and taking phenolphthalein as an indicator; and calculating the amount of CO2 produced under the soil respiration action according to the amount of the reacted NaOH. The experimental method is easy and practicable, reduces equipment cost and is more suitable for small-scale test research of a laboratory.

Description

technical field [0001] The invention belongs to the technical field of soil monitoring, in particular to an experimental device and method for measuring soil respiration during drought. Background technique [0002] Soil respiration is a major circulation pathway in the global carbon cycle. Conversion of organic carbon to CO through soil respiration 2 Form flow to the atmosphere, CO 2 Emissions are the main factor determining the carbon balance of terrestrial ecosystems, and it is the relationship between soil carbon and atmospheric CO 2 The main form of quick exchange. [0003] Under the background of climate change, drought and alternation of dry and wet have two characteristics of increasing severity and inevitability. Therefore, it is urgent to carry out relevant research work on soil respiration, soil microbial decomposition and mineralization, global soil carbon / nitrogen cycle, and pollutant migration and transformation in soil under drought and alternating wet and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
Inventor 宋新山王君郑莹莹虞素飞丁怡
Owner DONGHUA UNIV
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