Depth‐dependent responses of soil organic carbon under nitrogen deposition

Yuanliu Hu; Qi Deng; Thomas Kätterer; Jørgen Eivind Olesen; Samantha C. Ying; Raúl Ochoa‐Hueso; Carsten W. Mueller; Michael N. Weintraub; Ji Chen

doi:10.1111/gcb.17247

Depth‐dependent responses of soil organic carbon under nitrogen deposition

Yuanliu Hu, Qi Deng^* (Corresponding author), Thomas Kätterer, Jørgen Eivind Olesen, Samantha C. Ying, Raúl Ochoa‐Hueso, Carsten W. Mueller, Michael N. Weintraub, Ji Chen^* (Corresponding author)

^*Corresponding author for this work

NIOO - Terrestrial Ecology (TE)

Research output: Contribution to journal/periodical › Article › Scientific › peer-review

16 Citations (Scopus)

Abstract

Emerging evidence points out that the responses of soil organic carbon (SOC) to nitrogen (N) addition differ along the soil profile, highlighting the importance of synthesizing results from different soil layers. Here, using a global meta-analysis, we found that N addition significantly enhanced topsoil (0–30 cm) SOC by 3.7% (±1.4%) in forests and grasslands. In contrast, SOC in the subsoil (30–100 cm) initially increased with N addition but decreased over time. The model selection analysis revealed that experimental duration and vegetation type are among the most important predictors across a wide range of climatic, environmental, and edaphic variables. The contrasting responses of SOC to N addition indicate the importance of considering deep soil layers, particularly for long-term continuous N deposition. Finally, the lack of depth-dependent SOC responses to N addition in experimental and modeling frameworks has likely resulted in the overestimation of changes in SOC storage under enhanced N deposition.

Original language	English
Article number	e17247
Journal	Global Change Biology
Volume	30
Issue number	3
DOIs	https://doi.org/10.1111/gcb.17247
Publication status	Published - 16 Mar 2024

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title = "Depth‐dependent responses of soil organic carbon under nitrogen deposition",

abstract = "Emerging evidence points out that the responses of soil organic carbon (SOC) to nitrogen (N) addition differ along the soil profile, highlighting the importance of synthesizing results from different soil layers. Here, using a global meta-analysis, we found that N addition significantly enhanced topsoil (0–30 cm) SOC by 3.7% (±1.4%) in forests and grasslands. In contrast, SOC in the subsoil (30–100 cm) initially increased with N addition but decreased over time. The model selection analysis revealed that experimental duration and vegetation type are among the most important predictors across a wide range of climatic, environmental, and edaphic variables. The contrasting responses of SOC to N addition indicate the importance of considering deep soil layers, particularly for long-term continuous N deposition. Finally, the lack of depth-dependent SOC responses to N addition in experimental and modeling frameworks has likely resulted in the overestimation of changes in SOC storage under enhanced N deposition.",

author = "Yuanliu Hu and Qi Deng and Thomas K{\"a}tterer and Olesen, {J{\o}rgen Eivind} and Ying, {Samantha C.} and Ra{\'u}l Ochoa‐Hueso and Mueller, {Carsten W.} and Weintraub, {Michael N.} and Ji Chen",

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T1 - Depth‐dependent responses of soil organic carbon under nitrogen deposition

AU - Hu, Yuanliu

AU - Deng, Qi

AU - Kätterer, Thomas

AU - Olesen, Jørgen Eivind

AU - Ying, Samantha C.

AU - Ochoa‐Hueso, Raúl

AU - Mueller, Carsten W.

AU - Weintraub, Michael N.

AU - Chen, Ji

N1 - Data archiving: unknown

PY - 2024/3/16

Y1 - 2024/3/16

N2 - Emerging evidence points out that the responses of soil organic carbon (SOC) to nitrogen (N) addition differ along the soil profile, highlighting the importance of synthesizing results from different soil layers. Here, using a global meta-analysis, we found that N addition significantly enhanced topsoil (0–30 cm) SOC by 3.7% (±1.4%) in forests and grasslands. In contrast, SOC in the subsoil (30–100 cm) initially increased with N addition but decreased over time. The model selection analysis revealed that experimental duration and vegetation type are among the most important predictors across a wide range of climatic, environmental, and edaphic variables. The contrasting responses of SOC to N addition indicate the importance of considering deep soil layers, particularly for long-term continuous N deposition. Finally, the lack of depth-dependent SOC responses to N addition in experimental and modeling frameworks has likely resulted in the overestimation of changes in SOC storage under enhanced N deposition.

AB - Emerging evidence points out that the responses of soil organic carbon (SOC) to nitrogen (N) addition differ along the soil profile, highlighting the importance of synthesizing results from different soil layers. Here, using a global meta-analysis, we found that N addition significantly enhanced topsoil (0–30 cm) SOC by 3.7% (±1.4%) in forests and grasslands. In contrast, SOC in the subsoil (30–100 cm) initially increased with N addition but decreased over time. The model selection analysis revealed that experimental duration and vegetation type are among the most important predictors across a wide range of climatic, environmental, and edaphic variables. The contrasting responses of SOC to N addition indicate the importance of considering deep soil layers, particularly for long-term continuous N deposition. Finally, the lack of depth-dependent SOC responses to N addition in experimental and modeling frameworks has likely resulted in the overestimation of changes in SOC storage under enhanced N deposition.

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JO - Global Change Biology

JF - Global Change Biology

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M1 - e17247

ER -

Depth‐dependent responses of soil organic carbon under nitrogen deposition

Abstract

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