Uncertainty in soil gas permeability measurements
IntroductionSoil gas permeability is critical to the study of soil pore structure, soil gas transport, and crop growth.MethodsIn this paper, a pressure decay method is proposed to calculate soil gas permeability based on the law of conservation of mass, which is measured and compared with the steady...
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Frontiers Media S.A.
2025-01-01
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| Series: | Frontiers in Environmental Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenvs.2025.1474764/full |
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| author | Lingxia Feng Lingxia Feng Junguo Hu Junguo Hu Junguo Hu Junjie Jiang |
| author_facet | Lingxia Feng Lingxia Feng Junguo Hu Junguo Hu Junguo Hu Junjie Jiang |
| author_sort | Lingxia Feng |
| collection | DOAJ |
| description | IntroductionSoil gas permeability is critical to the study of soil pore structure, soil gas transport, and crop growth.MethodsIn this paper, a pressure decay method is proposed to calculate soil gas permeability based on the law of conservation of mass, which is measured and compared with the steady-state method in a variety of soils, including compacted soils and soils with different moisture contents. The applicability of the two methods and the effects of compaction and water content on soil gas permeability were explored.ResultsThe experimental results show that in low-permeability soils, there is a bias in the measured values of the steady-state method. In contrast, the results calculated based on the pressure decay method are more accurate. Increasing the water content of the soil or compacting the soil results in a 20%–88% or 63%–93% decrease in soil gas permeability, respectively, with the degree of decrease correlating with the viscosity of the medium.DiscussionThe findings show that calculating soil gas permeability based on the pressure decay method helps compensate for the inaccuracy of the steady-state method in measuring results in low-permeability soils. This leads to a better evaluation of soil aeration conditions, which, in turn, serves environmental, agricultural, and ecological research. |
| format | Article |
| id | doaj-art-7f72b3b5c51b49438c1cb654d96f270b |
| institution | Kabale University |
| issn | 2296-665X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Environmental Science |
| spelling | doaj-art-7f72b3b5c51b49438c1cb654d96f270b2025-01-23T06:56:12ZengFrontiers Media S.A.Frontiers in Environmental Science2296-665X2025-01-011310.3389/fenvs.2025.14747641474764Uncertainty in soil gas permeability measurementsLingxia Feng0Lingxia Feng1Junguo Hu2Junguo Hu3Junguo Hu4Junjie Jiang5College of Mathematics and Computer Science, Zhejiang A&F University, Hangzhou, Zhejiang, ChinaZhejiang Provincial Key Laboratory of Forestry Intelligent Monitoring and Information Technology Research, Zhejiang A&F University, Hangzhou, Zhejiang, ChinaCollege of Mathematics and Computer Science, Zhejiang A&F University, Hangzhou, Zhejiang, ChinaZhejiang Provincial Key Laboratory of Forestry Intelligent Monitoring and Information Technology Research, Zhejiang A&F University, Hangzhou, Zhejiang, ChinaCollege of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang, ChinaCollege of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang, ChinaIntroductionSoil gas permeability is critical to the study of soil pore structure, soil gas transport, and crop growth.MethodsIn this paper, a pressure decay method is proposed to calculate soil gas permeability based on the law of conservation of mass, which is measured and compared with the steady-state method in a variety of soils, including compacted soils and soils with different moisture contents. The applicability of the two methods and the effects of compaction and water content on soil gas permeability were explored.ResultsThe experimental results show that in low-permeability soils, there is a bias in the measured values of the steady-state method. In contrast, the results calculated based on the pressure decay method are more accurate. Increasing the water content of the soil or compacting the soil results in a 20%–88% or 63%–93% decrease in soil gas permeability, respectively, with the degree of decrease correlating with the viscosity of the medium.DiscussionThe findings show that calculating soil gas permeability based on the pressure decay method helps compensate for the inaccuracy of the steady-state method in measuring results in low-permeability soils. This leads to a better evaluation of soil aeration conditions, which, in turn, serves environmental, agricultural, and ecological research.https://www.frontiersin.org/articles/10.3389/fenvs.2025.1474764/fullsoil gas permeability measurementpressure decay methodsteady-state methodgas flownumerical solution |
| spellingShingle | Lingxia Feng Lingxia Feng Junguo Hu Junguo Hu Junguo Hu Junjie Jiang Uncertainty in soil gas permeability measurements Frontiers in Environmental Science soil gas permeability measurement pressure decay method steady-state method gas flow numerical solution |
| title | Uncertainty in soil gas permeability measurements |
| title_full | Uncertainty in soil gas permeability measurements |
| title_fullStr | Uncertainty in soil gas permeability measurements |
| title_full_unstemmed | Uncertainty in soil gas permeability measurements |
| title_short | Uncertainty in soil gas permeability measurements |
| title_sort | uncertainty in soil gas permeability measurements |
| topic | soil gas permeability measurement pressure decay method steady-state method gas flow numerical solution |
| url | https://www.frontiersin.org/articles/10.3389/fenvs.2025.1474764/full |
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