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Indoor simulation system for influence of freezing-thawing processes on soil environments

An environmental impact and simulation system technology, applied in the field of indoor simulation systems, can solve problems such as high cost and difficulty in field in-situ control tests, and achieve the effect of laying a good foundation for data collection, reducing research costs, and shortening research time.

Active Publication Date: 2017-10-20
NORTHWEST INST OF ECO-ENVIRONMENT & RESOURCES CAS
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Problems solved by technology

However, due to harsh natural conditions, it is difficult and costly to carry out field in situ control experiments on soil freeze-thaw processes.

Method used

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  • Indoor simulation system for influence of freezing-thawing processes on soil environments
  • Indoor simulation system for influence of freezing-thawing processes on soil environments
  • Indoor simulation system for influence of freezing-thawing processes on soil environments

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Embodiment 1

[0041] Please refer to Figure 1 to Figure 4 , the present embodiment provides an indoor simulation system 100 for the effect of the freeze-thaw process on the soil environment, which is an indoor simulation system for studying soil physicochemical, microbial and greenhouse gas changes in soil caused by freeze-thaw.

[0042] It includes an artificial climate box 10, a first test cabinet 20, a second test cabinet 30, a soil column 40, and a greenhouse gas transmission and collection channel (including CO 2 Concentration sensor 60), soil temperature and humidity salt sensor 50 ( Figure 13 Shown) and data collector 70.

[0043] Specifically, the interior of the artificial climate chamber 10 has a cavity, the first test cabinet 20 and the second test cabinet 30 are both arranged in the cavity, and the first test cabinet 20 and the second test cabinet 30 are isolated by wire mesh 101 . In detail, both the first test cabinet 20 and the second test cabinet 30 are made of cold-roll...

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Abstract

The invention provides an indoor simulation system for influence of freezing-thawing processes on soil environments, and relates to the technical field of scientific research on cryospheres. The indoor simulation system comprises an artificial climate box, soil storages (with soil columns), greenhouse gas transportation acquisition channels (with CO2 concentration sensors), soil temperature, humidity and salinity sensors and a data acquirer. The climate box for controlling positive and negative internal temperature fluctuation is divided into two layers to be provided with test cabinets, the soil columns are arranged in the upper-layer test cabinet, and soil samples which can be periodically sampled and analyzed are stored in the lower-layer test cabinet. The soil temperature, humidity and salinity sensors are hermetically connected with the soil columns, and the leak-proof acquisition channels are used for delivering greenhouse gas generated in the soil columns to the outside of the artificial climate box, so that periodic acquisition and quantitative research can be carried out; the concentration of CO2 in the acquisition channels can be detected by the CO2 concentration sensors in real time, and monitoring data of the various sensors can be acquired and stored by the data acquirer outside the box. The indoor simulation system has the advantages that scientific technical support can be provided for research in the aspect of the influence of freezing-thawing on the soil environments, and the shortcomings of in-situ observation research can be overcome.

Description

technical field [0001] The invention relates to the technical field of cryosphere scientific research, in particular to an indoor simulation system for the influence of a freeze-thaw process on the soil environment. Background technique [0002] The soil freeze-thaw process (or freeze-thaw cycle) is a soil process of repeated freezing and thawing at a certain depth below the surface soil due to diurnal or seasonal heat changes. This phenomenon is very common in middle, high latitude or high altitude regions. According to research, nearly 57% of the land area in the northern hemisphere experiences soil freeze-thaw processes. Numerous studies have shown that the alternating action of freezing and thawing has a strong impact on the soil environment, mainly by changing the hydrothermal characteristics of the soil, which has effects on soil physical characteristics, chemical properties, microbial community composition and activity, and greenhouse gas emissions. Therefore, the fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00
CPCG01N25/00Y02A40/25
Inventor 陈生云吴妍妍张钊李硕孙月娥
Owner NORTHWEST INST OF ECO-ENVIRONMENT & RESOURCES CAS
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