Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15851 |
Patterns and drivers of global gross nitrogen mineralization in soils | |
Ahmed S. Elrys; Ahmad Ali; Huimin Zhang; Yi Cheng; Jinbo Zhang; Zu-Cong Cai; Christoph Mü; ller; Scott X. Chang | |
2021-08-29 | |
发表期刊 | Global Change Biology |
出版年 | 2021 |
英文摘要 | Soil gross nitrogen (N) mineralization (GNM), a key microbial process in the global N cycle, is mainly controlled by climate and soil properties. This study provides for the first time a comprehensive analysis of the role of soil physicochemical properties and climate and their interactions with soil microbial biomass (MB) in controlling GNM globally. Through a meta-analysis of 970 observations from 337 published papers from various ecosystems, we found that GNM was positively correlated with MB, total carbon, total N and precipitation, and negatively correlated with bulk density (BD) and soil pH. Our multivariate analysis and structural equation modeling revealed that GNM is driven by MB and dominantly influenced by BD and precipitation. The higher total N accelerates GNM via increasing MB. The decrease in BD stimulates GNM via increasing total N and MB, whereas higher precipitation stimulates GNM via increasing total N. Moreover, the GNM varies with ecosystem type, being greater in forests and grasslands with high total carbon and MB contents and low BD and pH compared to croplands. The highest GNM was observed in tropical wet soils that receive high precipitation, which increases the supply of soil substrate (total N) to microbes. Our findings suggest that anthropogenic activities that affect soil microbial population size, BD, soil substrate availability, or soil pH may interact with changes in precipitation regime and land use to influence GNM, which may ultimately affect ecosystem productivity and N loss to the environment. |
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/336546 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Ahmed S. Elrys,Ahmad Ali,Huimin Zhang,et al. Patterns and drivers of global gross nitrogen mineralization in soils[J]. Global Change Biology,2021. |
APA | Ahmed S. Elrys.,Ahmad Ali.,Huimin Zhang.,Yi Cheng.,Jinbo Zhang.,...&Scott X. Chang.(2021).Patterns and drivers of global gross nitrogen mineralization in soils.Global Change Biology. |
MLA | Ahmed S. Elrys,et al."Patterns and drivers of global gross nitrogen mineralization in soils".Global Change Biology (2021). |
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