Spatiotemporal variation in soil carbon-to-nitrogen and carbon-to-hydrogen ratios: a case study from agricultural farmlands in Southern Texas, USA
土壌の炭素対窒素比および炭素対水素比の時空間変動：米国テキサス州南部の農地を事例として (AI 翻訳)
Matthew C. Enebe, Richard W. Griffin, Ram L. Ray, Javad Barouei, Olukayode Kuloyo, Christian Davies, Selamawit Woldesenbet, Aaron Watson, Debra Elder
🤖 gxceed AI 要約
日本語
この研究は、テキサス州南部の農地における土壌のC:N比とC:H比の時空間変動を調査した。表層土壌で炭素含有量が高く、C:N比とC:H比も同様のパターンを示した。pHが6.0〜7.5の最適範囲内で微生物活動が促進され、炭素分解が進んでいることが示唆された。全体として、これらの農地は炭素隔離能力が弱く、バイオ炭などの対策が必要と結論付けられた。
English
This study investigated spatiotemporal variation in soil C:N and C:H ratios in agricultural farmlands in Southern Texas. Results showed higher carbon content in topsoil, with C:N and C:H ratios following similar patterns. Soil pH in the optimal range (6.0-7.5) supported microbial decomposition, indicating weak carbon sequestration capacity and need for measures like biochar.
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
この研究は、農業土壌の炭素隔離能力を評価したもので、日本の農業分野におけるGXにも示唆を与える。ただし、米国テキサスの事例であり、日本の気候・土壌条件への直接適用には注意が必要。
In the global GX context
This study provides empirical evidence on soil carbon dynamics in agricultural systems, relevant to global nature-based climate solutions. While not directly linked to disclosure frameworks, it supports understanding of carbon sequestration potential which could inform carbon accounting for agricultural sectors.
👥 読者別の含意
🔬研究者:Useful for soil carbon modeling and understanding stoichiometric controls on carbon sequestration.
🏢実務担当者:Can inform soil management practices aimed at enhancing carbon storage, such as biochar application.
🏛政策担当者:Provides evidence for agricultural carbon sequestration policies, though localized to Texas.
📄 Abstract（原文）
Introduction Soil elemental stoichiometry is the bedrock of carbon dynamics, and its understanding is essential in promoting soil carbon sinking capacity. Methods This study examined the spatiotemporal variation of soil carbon-to-nitrogen and carbon-to- hydrogen ratios in agricultural farmlands at Prairie View A&M University. The soil C:N, C (%), and C:H were measured and quantified in three different arable farmlands across two depths (top- and subsoils). Result The results reveal that the percentage of carbon was higher in the topsoil and lower in the subsoil. C:N and C:H ratios equally followed the same pattern, with plot 3 recording the highest amount in each of the elemental stoichiometry recorded levels. C:H–C:N ratio relationships were positively correlated with each other, indicating variations in soil organic matter composition and dynamics. Their positive correlation sheds light on the abundance of carbon-rich, low-nitrogen organic matter in the topsoil and nitrogen-rich organic matter in the subsoil. C:H ratio equally followed the same trend. Interestingly, the soil pH in our study, which is a key driver in microbial mineralization of organic matter in the soil, occurs within the optimum ranges of 6.0 to 7.5. Additionally, the elemental composition ratios in this study was high, but when compared with various organic matters of plant origin, it appears to be very low, showing high microbial activities in the decomposition of the carbon matter. This decomposition process is supported by the observed conducive soil pH. Discussion Overall, these findings confirmed that the agricultural farmlands in our study sites are very weak in carbon sequestration and necessitates the adoption of measures such as biochar or soil conditioners/amendments application that is capable of modulating soil conditions and promoting carbon storage in the soil.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3389/fsoil.2026.1824041first seen 2026-06-18 05:03:56
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