Crop residue recycling in rice-based cropping systems for soil health restoration and climate stabilisation in humid tropics
熱帯湿潤地域における水田ベース作付体系での作物残渣リサイクルによる土壌健康回復と気候安定化 (AI 翻訳)
A K Rohith, A V Meera, J John, B Rani, J S Bindhu, N Leno
🤖 gxceed AI 要約
日本語
熱帯湿潤地域の水田作付体系で作物残渣リサイクルが土壌炭素動態と温室効果ガス収支に与える影響を評価。8種の作付体系を比較し、土壌健康志向体系で全有機炭素6.27%、収入志向体系で純GHG収支マイナス(-11920 kg CO2相当)となり、炭素隔離と気候回復力強化に有効と示した。
English
This study evaluates the impact of crop residue recycling on soil carbon dynamics and greenhouse gas balance in rice-based cropping systems in humid tropics. Among eight sequences, a soil health-oriented system showed the highest total organic carbon (6.27%), while an income-oriented system achieved a net negative GHG balance (-11920 kg CO2 eq), demonstrating the role of bioresource incorporation in enhancing carbon sequestration, soil health, and climate resilience.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
本論文は熱帯湿潤地域の水田作付体系における炭素貯留と温室効果ガス削減の可能性を示し、日本の水田農業における炭素隔離策の参考となる。収入確保と炭素隔離を両立する作付体系設計は、日本の農業政策にも示唆を与える。
In the global GX context
This paper provides empirical evidence on how crop residue recycling in rice-based systems can enhance carbon sequestration while maintaining productivity. Globally, such agroecological practices are gaining attention for their potential to contribute to climate change mitigation under the UNFCCC and national GHG inventories.
👥 読者別の含意
🔬研究者:Provides empirical data on carbon dynamics in rice-based cropping systems useful for modeling soil carbon sequestration and GHG mitigation in tropical agriculture.
🏢実務担当者:Farmers and agricultural extension officers can use these findings to design cropping sequences that improve soil health and reduce net GHG emissions.
🏛政策担当者:Policymakers in agricultural climate mitigation should consider incentivizing crop residue recycling and diversified cropping systems to enhance soil carbon storage.
📄 Abstract（原文）
Soil carbon dynamics and sequestration potential are indicators of both climate change mitigation and soil health restoration. Carbon source-sink relationships in rice-based cropping systems strongly influence nutrient availability and greenhouse gas (GHG) balance. A field experiment was conducted at Integrated Farming System Research Station, Karamana, Kerala Agricultural University, to assess carbon dynamics under 8 different rice-based cropping sequences designed for soil health improvement, family nutrition, livestock feed supply and income generation. The conventional rice-fallow-fallow system served as the control. Soil samples collected at 3 depths (0–15, 15–30 and 30–45 cm) after seasonal crop residue incorporation were analysed for total organic carbon (TOC), carbon pools (labile and non-labile), particulate organic carbon (POC), water-soluble carbon (WSC) and microbial biomass carbon (MBC). Carbon fractions consistently declined with depth (0–15 cm > 15–30 cm > 30–45 cm), reflecting reduced organic inputs and microbial activity. Among the sequences, the soil health-oriented system T3 (rice-bush cowpea-groundnut + daincha) recorded the highest TOC (6.27 %), organic carbon (1.38 %) and MBC (326.48 mg kg-1), while T4 (rice + daincha-rice + daincha-redgram + groundnut) achieved highest WSC (84.52 mg kg-1) and POC (4.11 %). The income-oriented system T9 (rice-sweet potato-cucumber) ranked second for most carbon pools and attained the highest carbon management index (290.48). Notably, T9 also achieved a net negative GHG balance (-11920 kg CO₂ equivalent), underscoring the role of bioresource incorporation in enhancing soil carbon sequestration, improving soil health and strengthening climate resilience.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.14719/pst.13511first seen 2026-06-25 04:37:11
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