您好，欢迎访问江苏省农业科学院 机构知识库！
江苏省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Soil organic carbon accumulation mechanisms in soil amended with straw and biochar: entombing effect or biochemical protection?

文献类型： 外文期刊

作者： Yuan, Yuhan 1 ; Liang, Yao 1 ; Cai, Hongguang 1 ; Yuan, Jingchao 1 ; Li, Cuilan 2 ; Liu, Hang 2 ; Zhang, Chang 1 ; Wang, Lichun 1 ; Zhang, Jinjing 2 ;

作者机构： 1.Jilin Acad Agr Sci, Northeast Agr Res Ctr China, Inst Agr Resources & Environm, Changchun 130033, Peoples R China

2.Jilin Agr Univ, Coll Resource & Environm Sci, Key Lab Soil Resource Sustainable Utilizat Commod, Changchun 130118, Peoples R China

关键词： Amino sugar; Microbial necromass; Microbial community; Microbial biomass; Nuclear magnetic resonance; High throughput sequencing

期刊名称：BIOCHAR （ 影响因子：13.5； 五年影响因子：14.1 ）

ISSN： 2524-7972

年卷期： 2025 年 7 卷 1 期

页码：

收录情况： SCI

摘要： Converting crop residues into biochar and subsequently incorporating it into soils is a promising strategy to improve carbon sequestration in agroecosystems. However, differences in the potential mechanisms for soil organic carbon (SOC) accumulation between biochar and its feedstock materials remain unclear. This study performed a nine-year field experiment involving four treatments in a Mollisol: mineral fertilizers alone and combined with maize straw or its biochar, and control without fertilizers and amendments. The main objectives of this study were to assess how straw and biochar incorporation influence SOC content, SOC chemical composition, microbial necromass carbon (MNC) content, and microbial community characteristics. Compared with mineral fertilizers alone, straw and biochar significantly (P < 0.05) increased SOC content, while biochar (40.5% increase) had more pronounced effects than straw (23.7% increase). Similarly, both straw and biochar increased MNC content and boosted microbial biomass, but straw had a more pronounced impact than did biochar. Additionally, biochar markedly increased SOC aromaticity by 26.6% (P < 0.05), while straw reduced SOC aromaticity by 2.85% (P > 0.05). Fungi, rather than bacteria, played a more crucial role in increasing SOC content through their necromass inputs under both straw and biochar incorporation. Our results demonstrated that straw enhanced SOC accumulation primarily through entombing effect of microbial necromass, while biochar enhanced SOC accumulation primarily through biochemical protection from recalcitrant aromatic carbon. The present findings provide valuable insight into the potential mechanisms of field practices that lead to maximize soil carbon sequestration.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：江苏省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台