Methane Dynamics in Agricultural Cropping Systems and near Source Wastewater Treatment Lagoon and Process Evaluation of Incubation Method for Methane Oxidation- [electronic resource]
Methane Dynamics in Agricultural Cropping Systems and near Source Wastewater Treatment Lagoon and Process Evaluation of Incubation Method for Methane Oxidation- [electronic resource]
- 자료유형
- 학위논문파일 국외
- 최종처리일시
- 20240214100102
- ISBN
- 9798380078375
- DDC
- 630
- 서명/저자
- Methane Dynamics in Agricultural Cropping Systems and near Source Wastewater Treatment Lagoon and Process Evaluation of Incubation Method for Methane Oxidation - [electronic resource]
- 발행사항
- [S.l.]: : Oklahoma State University., 2023
- 발행사항
- Ann Arbor : : ProQuest Dissertations & Theses,, 2023
- 형태사항
- 1 online resource(132 p.)
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-02, Section: B.
- 주기사항
- Advisor: Warren, Jason.
- 학위논문주기
- Thesis (Ph.D.)--Oklahoma State University, 2023.
- 사용제한주기
- This item must not be sold to any third party vendors.
- 초록/해제
- 요약The three chapters included in this dissertation center on the dynamics of soil methane fluxes and the potential of soil as a methane sink. Soil CH4 consumption is a natural CH4 mitigation strategy, and understanding how it works can aid in the development of strategies to reduce CH4 emissions from soil and support soil health. The first study quantified CH4 fluxes at the soil surface interface near a dairy lagoon, which served as the CH4 point source. Methane gas samples were collected using a close vented gas chamber, injected into pre-vacuumed vials, and quantified for CH4 concentration using gas chromatograph. Net CH4 influx were greater in chambers that were installed closest to the lagoon than in chambers further away from the lagoon. The second study evaluated a process of incubation method that uses headspace analysis of incubation chambers of CH4 concentrations quantified by gas chromatograph (GC) using soil soils from different land management. The first phase of incubation created conditions that exposed the microbes to high levels of CH4 and may have increased the microbes' methanotrophic potential. The derived calibration curve generated through known concentration of standard CH4 gas can be used as a simple and practical tool in quantifying and estimating concentrations of CH4 during the CH4 oxidation process in a laboratory setting. The last study utilized a large data set of CH4 that was a result of studies conducted to assess N2O emissions. The different field experiments generated 11,837 individual measurements that were taken in 362 sampling events of which only 21% or 2,082 manifested a significant methane flux. Methane consumption is a frequent result of the CH4 dynamics between the atmosphere and soil. The flux average value was -0.0016 mg CH4-C m-2 hr-1 and if this flux rate accurately represents the average consumption of CH4-C in cropland soils of the Central Great Southern Plains, it would remove 55,950.40 Metric tons CO2 eq yr-1 from the 8.8 million acres of cropland in Kansas.
- 일반주제명
- Agriculture.
- 일반주제명
- Soil sciences.
- 키워드
- Incubation
- 키워드
- Land management
- 키워드
- Methane fluxes
- 기타저자
- Oklahoma State University Environmental Science
- 기본자료저록
- Dissertations Abstracts International. 85-02B.
- 기본자료저록
- Dissertation Abstract International
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.