Device and method for determining soil respiration and carbon isotopes

A carbon isotope and soil respiration technology, applied in the field of analysis and testing, can solve the problems of difficult coordinated observation, inability to take into account the measurement, and the inability to ensure the measurement accuracy of soil respiration value at the same time, so as to improve the measurement accuracy and speed, and improve work efficiency.

Active Publication Date: 2016-08-10
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
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Problems solved by technology

In addition, this method does not measure the respiration value and its isotope ratio in the same soil and under the same conditions at the same time, which will inevitably lead to errors
[0006] None of the a

Method used

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  • Device and method for determining soil respiration and carbon isotopes
  • Device and method for determining soil respiration and carbon isotopes
  • Device and method for determining soil respiration and carbon isotopes

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Embodiment 1

[0039] Such as figure 1 , A device for measuring soil respiration and carbon isotope, comprising an air intake pipeline 1, a carbon dioxide filter 2, a soil air chamber 4 and a carbon isotope analyzer 9;

[0040]The carbon dioxide filter has two air holes 3, the air hole at one end is an air inlet, connected to the air suction pipeline 1, and the air hole at the other end is an air outlet, connected to the soil air chamber 4, and the soil air chamber is connected to the carbon dioxide through the air pipeline. Isotope Analyzer9. The carbon dioxide filter 2 is filled with soda lime; the air suction pipeline is made of Teflon material, which does not absorb gas and is extremely corrosion-resistant ( figure 2 and image 3 ).

[0041] The soil air chamber 4 is a cylindrical container without the bottom of the container, and the top of the air chamber has two air holes 3, and the two air holes are distributed at the two ends of a diameter at the top of the air chamber; The gas...

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Abstract

The invention provides a device for determining soil respiration and carbon isotopes. The device comprises an air suction pipeline, a carbon dioxide filter, a soil air chamber and a carbon isotope analyzer. An air inlet hole of the carbon dioxide filter is connected with the air suction pipeline. An air outlet hole of the carbon dioxide filter is connected with the soil air chamber. The soil air chamber is connected with the carbon isotope analyzer through an air path pipeline. The invention further provides a method applying the device for determining soil respiration and carbon isotopes. The device is arranged on a sample plot for directly obtaining soil respiration data, sampling is not needed back to a laboratory, no damage is caused to plants, and the device is rapid and convenient to use; the adopted device can achieve measurement in the day, at night and when it rains, and complete tree respiration information within one season and one year can be obtained.

Description

technical field [0001] The invention belongs to the field of analysis and testing, and in particular relates to a device and method for measuring soil respiration by using isotope analysis. Background technique [0002] Soil respiration, as an important part of the carbon cycle of the ecosystem, is the main way to convert organic carbon in the soil into inorganic carbon and return it to the atmosphere. It is a key link in the terrestrial ecosystem and is very important in the global carbon cycle. . Global research on soil respiration started in the 20th century. At the beginning of the 20th century, research on soil respiration was mainly carried out in laboratories, with the goal of evaluating soil fertility and soil microbial activity. Since the middle of the 20th century, the research on soil respiration has become active. During this period, due to the continuous optimization of research methods, the accuracy and scale of research have also been greatly improved. Until...

Claims

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Application Information

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IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 余新晓李瀚之贾国栋孙佳美路伟伟刘自强徐晓梧
Owner BEIJING FORESTRY UNIVERSITY
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