Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15407 |
Phosphorus addition decreases microbial residual contribution to soil organic carbon pool in a tropical coastal forest | |
Ye Yuan; Yue Li; Zhijian Mou; Luhui Kuang; Wenjia Wu; Jing Zhang; Faming Wang; Dafeng Hui; Josep Peñ; uelas; Jordi Sardans; Hans Lambers; Jun Wang; Yuanwen Kuang; Zhi’; an Li; Zhanfeng Liu | |
2020-11-04 | |
发表期刊 | Global Change Biology
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出版年 | 2020 |
英文摘要 | The soil nitrogen (N) and phosphorus (P) availability often constrains soil carbon (C) pool, and elevated N deposition could further intensify soil P limitation, which may affect soil C cycling in these N‐rich and P‐poor ecosystems. Soil microbial residues may not only affect soil organic carbon (SOC) pool but also impact SOC stability through soil aggregation. However, how soil nutrient availability and aggregate fractions affect microbial residues and the microbial residue contribution to SOC is still not well understood. We took advantage of a 10‐year field fertilization experiment to investigate the effects of nutrient additions, soil aggregate fractions, and their interactions on the concentrations of soil microbial residues and their contribution to SOC accumulation in a tropical coastal forest. We found that continuous P addition greatly decreased the concentrations of microbial residues and their contribution to SOC, whereas N addition had no significant effect. The P‐stimulated decreases in microbial residues and their contribution to SOC were presumably due to enhanced recycling of microbial residues via increased activity of residue‐decomposing enzymes. The interactive effects between soil aggregate fraction and nutrient addition were not significant, suggesting a weak role of physical protection by soil aggregates in mediating microbial responses to altered soil nutrient availability. Our data suggest that the mechanisms driving microbial residue responses to increased N and P availability might be different, and the P‐induced decrease in the contribution of microbial residues might be unfavorable for the stability of SOC in N‐rich and P‐poor tropical forests. Such information is critical for understanding the role of tropical forests in the global carbon cycle. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/301769 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Ye Yuan,Yue Li,Zhijian Mou,et al. Phosphorus addition decreases microbial residual contribution to soil organic carbon pool in a tropical coastal forest[J]. Global Change Biology,2020. |
APA | Ye Yuan.,Yue Li.,Zhijian Mou.,Luhui Kuang.,Wenjia Wu.,...&Zhanfeng Liu.(2020).Phosphorus addition decreases microbial residual contribution to soil organic carbon pool in a tropical coastal forest.Global Change Biology. |
MLA | Ye Yuan,et al."Phosphorus addition decreases microbial residual contribution to soil organic carbon pool in a tropical coastal forest".Global Change Biology (2020). |
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