Species and Functional Trait Determinants of Biochar Carbon Retention: Insights from Uniform Smoldering Experiments
文献类型：期刊论文
| 作者 | Wang, Jingyuan |
| 刊名 | FORESTS
 |
| 出版日期 | 2026-01-14 |
| 卷号 | 17期号:1页码:116 |
| 关键词 | uniform smolder biochar carbon retention carbon recovery efficiency carbon enrichment factor |
| DOI | 10.3390/f17010116 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Understanding the influence of tree species and their intrinsic traits on biochar yield and carbon retention is essential for optimizing the conversion of biomass to biochar in carbon-negative systems. While it is well-established that pyrolysis temperature and broad feedstock categories significantly affect biochar properties, the extent of species-level variation within woody biomass under standardized pyrolysis conditions remains insufficiently quantified. Here, we synthesized biochar from seven common subtropical tree species at 600 degrees C under oxygen-limited smoldering conditions and quantified three key indices: biochar yield (Y), carbon recovery efficiency (eta C), and carbon enrichment factor (EC). We further examined the relationships of these indices with feedstock characteristics (initial carbon content, wood density) and functional group identity (conifer vs. broadleaf). Analysis of variance revealed significant interspecific differences in eta C but weaker effects on Y, indicating that species identity primarily governs carbon retention rather than total mass yield. Broadleaf species (Liquidambar formosana, Castanea mollissima) exhibited consistently higher eta C and EC than conifers (Pinus massoniana, P. elliottii), reflecting higher lignin content and wood density that favor aromatic char formation. Principal component and cluster analyses clearly separated coniferous and broadleaf taxa, accounting for over 80% of total variance in carbon-related traits. Regression models showed that feedstock carbon content, biochar carbon content, and wood density together explained 15.5% of the variance in eta C, with feedstock carbon content exerting a significant negative effect, whereas wood density correlated positively with carbon retention. These findings demonstrate that tree species and their functional traits jointly determine carbon fixation efficiency during smoldering. High initial carbon content alone does not guarantee enhanced carbon recovery; instead, wood density and lignin-derived structural stability dominate retention outcomes. Our results underscore the need for trait-based feedstock selection to improve biochar quality and carbon sequestration potential, and provide a mechanistic framework linking species identity, functional traits, and carbon stabilization in biochar production. |
| URL标识 | 查看原文 |
| WOS关键词 | PYROLYSIS TEMPERATURE ; STABILITY |
| WOS研究方向 | Forestry |
| 语种 | 英语 |
| WOS记录号 | WOS:001671230100001 |
| 出版者 | MDPI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/221041]  |
| 专题 | 千烟洲站森林生态系统研究中心_外文论文 |
| 通讯作者 | Wang, Jingyuan |
| 作者单位 | Chinese Acad Sci, Synth Res Ctr Chinese Ecosyst Res Network, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Jingyuan. Species and Functional Trait Determinants of Biochar Carbon Retention: Insights from Uniform Smoldering Experiments[J]. FORESTS,2026,17(1):116. |
| APA | Wang, Jingyuan.(2026).Species and Functional Trait Determinants of Biochar Carbon Retention: Insights from Uniform Smoldering Experiments.FORESTS,17(1),116. |
| MLA | Wang, Jingyuan."Species and Functional Trait Determinants of Biochar Carbon Retention: Insights from Uniform Smoldering Experiments".FORESTS 17.1(2026):116. |
入库方式： OAI收割
来源：地理科学与资源研究所
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