Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.16066 |
Variations and controlling factors of soil denitrification rate | |
Zhaolei Li; Ze Tang; Zhaopeng Song; Weinan Chen; Dashuan Tian; Shiming Tang; Xiaoyue Wang; Jinsong Wang; Wenjie Liu; Yi Wang; Jie Li; Lifen Jiang; Yiqi Luo; Shuli Niu | |
2022-01-07 | |
发表期刊 | Global Change Biology |
出版年 | 2022 |
英文摘要 | The denitrification process profoundly affects soil nitrogen (N) availability and generates its byproduct, nitrous oxide, as a potent greenhouse gas. There are large uncertainties in predicting global denitrification because its controlling factors remain elusive. In this study, we compiled 4301 observations of denitrification rates across a variety of terrestrial ecosystems from 214 papers published in the literature. The averaged denitrification rate was 3516.3 ± 91.1 µg N kg−1 soil day−1. The highest denitrification rate was 4242.3 ± 152.3 µg N kg−1 soil day−1 under humid subtropical climates, and the lowest was 965.8 ± 150.4 µg N kg−1 under dry climates. The denitrification rate increased with temperature, precipitation, soil carbon and N contents, as well as microbial biomass carbon and N, but decreased with soil clay contents. The variables related to soil N contents (e.g., nitrate, ammonium, and total N) explained the variation of denitrification more than climatic and edaphic variables (e.g., mean annual temperature (MAT), soil moisture, soil pH, and clay content) according to structural equation models. Soil microbial biomass carbon, which was influenced by soil nitrate, ammonium, and total N, also strongly influenced denitrification at a global scale. Collectively, soil N contents, microbial biomass, pH, texture, moisture, and MAT accounted for 60% of the variation in global denitrification rates. The findings suggest that soil N contents and microbial biomass are strong predictors of denitrification at the global scale. |
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/345093 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Zhaolei Li,Ze Tang,Zhaopeng Song,et al. Variations and controlling factors of soil denitrification rate[J]. Global Change Biology,2022. |
APA | Zhaolei Li.,Ze Tang.,Zhaopeng Song.,Weinan Chen.,Dashuan Tian.,...&Shuli Niu.(2022).Variations and controlling factors of soil denitrification rate.Global Change Biology. |
MLA | Zhaolei Li,et al."Variations and controlling factors of soil denitrification rate".Global Change Biology (2022). |
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