Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15206 |
Elevated temperature increases the accumulation of microbial necromass nitrogen in soil via increasing microbial turnover | |
Xu Wang; Chao Wang; M. Francesca Cotrufo; Lifei Sun; Ping Jiang; Ziping Liu; Edith Bai | |
2020-07-01 | |
发表期刊 | Global Change Biology |
出版年 | 2020 |
英文摘要 | Microbial‐derived nitrogen (N) is now recognized as an important source of soil organic N. However, the mechanisms that govern the production of microbial necromass N, its turnover, and stabilization in soil remain poorly understood. To assess the effects of elevated temperature on bacterial and fungal necromass N production, turnover, and stabilization, we incubated 15N‐labeled bacterial and fungal necromass under optimum moisture conditions at 10°C, 15°C, and 25°C. We developed a new 15N tracing model to calculate the production and mineralization rates of necromass N. Our results showed that bacterial and fungal necromass N had similar mineralization rates, despite their contrasting chemistry. Most bacterial and fungal necromass 15N was recovered in the mineral‐associated organic matter fraction through microbial anabolism, suggesting that mineral association plays an important role in stabilizing necromass N in soil, independently of necromass chemistry. Elevated temperature significantly increased the accumulation of necromass N in soil, due to the relatively higher microbial turnover and production of necromass N with increasing temperature than the increases in microbial necromass N mineralization. In conclusion, we found elevated temperature may increase the contribution of microbial necromass N to mineral‐stabilized soil organic N. |
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/281750 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Xu Wang,Chao Wang,M. Francesca Cotrufo,et al. Elevated temperature increases the accumulation of microbial necromass nitrogen in soil via increasing microbial turnover[J]. Global Change Biology,2020. |
APA | Xu Wang.,Chao Wang.,M. Francesca Cotrufo.,Lifei Sun.,Ping Jiang.,...&Edith Bai.(2020).Elevated temperature increases the accumulation of microbial necromass nitrogen in soil via increasing microbial turnover.Global Change Biology. |
MLA | Xu Wang,et al."Elevated temperature increases the accumulation of microbial necromass nitrogen in soil via increasing microbial turnover".Global Change Biology (2020). |
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