AI SearchA machine learning approach to localizing methane emission factors in rice cultivation : (Record no. 833)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03753nas a2200421 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260817161321.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 251105s20259999th u ms t 000 eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b12467583 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.EV-25-21 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Thet Htar Nyo |
| 245 10 - TITLE STATEMENT | |
| Title | A machine learning approach to localizing methane emission factors in rice cultivation : |
| Remainder of title | a case study in Ayutthaya, Thailand |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Pathum Thani, Thailand : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2025 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 95 leaves : |
| Other physical details | ill.+ |
| Accompanying material | 1 online resource |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. EV-25-21 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Environmental Engineering and Management |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M. Eng.) - Asian Institute of Technology, 2025 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Methane (CH₄) emissions from rice cultivation significantly contribute to agricultural greenhouse gas emissions. Conventional estimation practices in developing countries often rely on generalized emission factors recommended by the Intergovernmental Panel on Climate Change (IPCC), due to the lack of sufficient ground-based monitoring and measurement. These estimations may not reflect the specific agricultural practices and environmental conditions of local regions. This study aims to localize methane emission factors for rice cultivation in Ayutthaya, Thailand, using a machine learning-based approach. A Gradient Boosting regression model was developed and trained on a global literature dataset containing known CH₄ emissions and associated agricultural variables. Key features influencing CH₄ emissions; pH, water regime, crop duration, organic amendment, N amount, and soil properties were selected based on feature importance analysis and SHAP (SHapley Additive exPlanations) values. The trained model was then applied to a Thailand-specific secondary dataset to predict methane emission factors. Results show that the predicted average CH₄ emission factor for the Thailand dataset is 0.8518 kg CH₄/ha/day, which is significantly lower than the IPCC Tier 1 default value of 1.30 kg CH₄/ha/day. This suggests that the IPCC default value may substantially overestimate methane emissions in certain local contexts, highlighting the importance of developing localized emission factors for improved regional GHG assessments. This research provides a practical framework for applying machine learning to improve emission factor localization. The findings offer valuable insights for policymakers and researchers in developing tailored mitigation strategies for rice agriculture in Southeast Asia. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Rice |
| General subdivision | Planting |
| -- | Environmental aspects |
| Geographic subdivision | Thailand |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Rice |
| General subdivision | Planting |
| -- | Data processing |
| Geographic subdivision | Thailand |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Machine learning |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Xue, Wenchao, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Cruz, Simon Guerrero, |
| Relator term | Co-chairperson |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Ekbordin Winijkul, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Tsusaka, Takuji W., |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | AIT Scholarship, |
| Relator term | Scholarship Donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. EV-25-21 |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B23006">http://203.159.5.9/ait-thesis/detail.php?q=B23006</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b12467583 |
| b | mnait |
| c | a |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 260617 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 251110 |
| First date, FD (RLIN) | m |
| -- | h |
| -- | a |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 67-Electronic Resource |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : - |
| CREATED | CREATED : 2025-05-11 |
| RECORD Id | RECORD # : i13560943 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
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| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120420814 |
| CREATED | CREATED : 2026-06-17 |
| RECORD Id | RECORD # : i13606104 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
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| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Total checkouts | Full call number | Date last seen | Copy number | Price effective from | Koha item type | Barcode |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | AIT Thesis no.EV-25-21 | 17/08/2026 | 1 | 17/08/2026 | 67-Electronic Resource | |||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | AIT Thesis no.EV-25-21 | 17/08/2026 | 1 | 17/08/2026 | 40-Archives | 30050120420814 |