Carbon footprint and greenhouse gas emissions of different rice-based cropping systems using LCA

verfasst von

Mohammad Mofizur Rahman Jahangir, Eduardo Aguilera, Jannatul Ferdous, Farah Mahjabin, Abdullah Al Asif, Moutakin Hossan, Hassan Ahmad, Maximilian Bauer, Alberto Sanz Cobeña, Christoph Müller, Mohammad Zaman

Abstract

There are many cropping systems on floodplain soils, but greenhouse gas (GHG) emission balances of these agricultural systems are rarely reported. Carbon (C) footprints of agricultural products were assessed using a co-designed life cycle assessment tool in major cropping systems in Bangladesh: rice-rice-rice (R-R-R/boro-aus-aman), rice-fallow-rice (R-F-R/boro-fallow-aman), maize-fallow-rice (M-F-R), wheat-mungbean-rice (W-Mu-R), and potato-rice-fallow (P-R-F) along with the field measurement of some of the systems. The rice system with dryland crops had higher nitrous oxide (N₂O) emissions (3.8 in maize, 4.5 in potato and 0.92 kg N₂O–N ha⁻¹ in mungbean) than sole rice (0.73 in boro, 0.57 in aus and 1.94 kg N₂O–N ha⁻¹ in aman) systems but methane (CH₄) emissions exhibited the opposite. Methane dominated, accounting for 50–80% of total emissions in rice systems. The boro rice-based systems (R-R-R and R-F-R) had the highest C footprint (ca. 25.8 and 19.2 Mg CO₂e ha⁻¹) while the P-F-R (12.3 Mg CO₂e ha⁻¹) and M-F-R (12.6 Mg CO₂e ha⁻¹) had the lowest C footprint. Boro and aus were more suitable to reduce C footprint. Measured CH₄ and N₂O data agreed well with the IPCC Tier 1 estimates but further study on GHG measurements in other agroecosystems and cropping systems are required to validate the estimation for adopting suitable GHG mitigation strategies.

Organisationseinheit(en)

Institut für Organische Chemie

Externe Organisation(en)

Bangladesh Agricultural University
Justus-Liebig-Universität Gießen
Spanish National Research Council (CSIC)
Joint FAO/IAEA Division of Nuclear Techniques in Food & Agriculture
University College Dublin

Typ

Artikel

Journal

Scientific reports

Band

15

Anzahl der Seiten

14

ISSN

2045-2322

Publikationsdatum

25.03.2025

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Allgemein

Ziele für nachhaltige Entwicklung

SDG 7 – Erschwingliche und saubere Energie, SDG 12 – Verantwortungsvoller Konsum und Produktion, SDG 13 – Klimaschutzmaßnahmen

Elektronische Version(en)

https://doi.org/10.1038/s41598-025-90157-2 (Zugang: Offen)