Unexpected high retention of 15N-labeled nitrogen in a tropical legume forest under long-term nitrogen enrichment

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Unexpected high retention of 15N-labeled nitrogen in a tropical legume forest under long-term nitrogen enrichment. / Mao, Jinhua; Mao, Qinggong; Gundersen, Per; Gurmesa, Geshere A.; Zhang, Wei; Huang, Juan; Wang, Senhao; Li, Andi; Wang, Yufang; Guo, Yabing; Liu, Rongzhen; Mo, Jiangming; Zheng, Mianhai.

In: Global Change Biology, Vol. 28, No. 4, 2022, p. 1529–1543.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Mao, J, Mao, Q, Gundersen, P, Gurmesa, GA, Zhang, W, Huang, J, Wang, S, Li, A, Wang, Y, Guo, Y, Liu, R, Mo, J & Zheng, M 2022, 'Unexpected high retention of 15N-labeled nitrogen in a tropical legume forest under long-term nitrogen enrichment', Global Change Biology, vol. 28, no. 4, pp. 1529–1543. https://doi.org/10.1111/gcb.16005

APA

Mao, J., Mao, Q., Gundersen, P., Gurmesa, G. A., Zhang, W., Huang, J., Wang, S., Li, A., Wang, Y., Guo, Y., Liu, R., Mo, J., & Zheng, M. (2022). Unexpected high retention of 15N-labeled nitrogen in a tropical legume forest under long-term nitrogen enrichment. Global Change Biology, 28(4), 1529–1543. https://doi.org/10.1111/gcb.16005

Vancouver

Mao J, Mao Q, Gundersen P, Gurmesa GA, Zhang W, Huang J et al. Unexpected high retention of 15N-labeled nitrogen in a tropical legume forest under long-term nitrogen enrichment. Global Change Biology. 2022;28(4):1529–1543. https://doi.org/10.1111/gcb.16005

Author

Mao, Jinhua ; Mao, Qinggong ; Gundersen, Per ; Gurmesa, Geshere A. ; Zhang, Wei ; Huang, Juan ; Wang, Senhao ; Li, Andi ; Wang, Yufang ; Guo, Yabing ; Liu, Rongzhen ; Mo, Jiangming ; Zheng, Mianhai. / Unexpected high retention of 15N-labeled nitrogen in a tropical legume forest under long-term nitrogen enrichment. In: Global Change Biology. 2022 ; Vol. 28, No. 4. pp. 1529–1543.

Bibtex

@article{02f6cde4788c4e5fa5c2076826c3b407,
title = "Unexpected high retention of 15N-labeled nitrogen in a tropical legume forest under long-term nitrogen enrichment",
abstract = "The responses of forests to nitrogen (N) deposition largely depend on the fates of deposited N within the ecosystem. Nitrogen-fixing legume trees widely occur in terrestrial forests, but the fates of deposited N in legume-dominated forests remain unclear, which limit a global evaluation of N deposition impacts and feedbacks on carbon sequestration. Here, we performed the first ecosystem-scale 15N labeling experiment in a typical legume-dominated forest as well as in a nearby non-legume forest to determine the fates of N deposition between two different forest types and to explore their underlying mechanisms. The 15N was sprayed bimonthly for 1 year to the forest floor in control and N addition (50 kg N ha−1 year−1 for 10 years) plots in both forests. We unexpectedly found a strong capacity of the legume forest to retain deposited N, with 75 ± 5% labeled N recovered in plants and soils, which was higher than that in the non-legume forest (56 ± 4%). The higher 15N recovery in legume forest was mainly driven by uptake by the legume trees, in which 15N recovery was approximately 15% more than that in the nearby non-legume trees. This indicates higher N-demand by the legume than non-legume trees. Mineral soil was the major sink for deposited N, with 39 ± 4% and 34 ± 3% labeled N retained in the legume and non-legume forests, respectively. Moreover, N addition did not significantly change the 15N recovery patterns of both forests. Overall, these findings indicate that legume-dominated forests act as a strong sink for deposited N regardless of high soil N availability under long-term atmospheric N deposition, which suggest a necessity to incorporate legume-dominated forests into N-cycling models of Earth systems to improve the understanding and prediction of terrestrial N budgets and the global N deposition effects.",
keywords = "N tracer, fate of deposited nitrogen, mature-legume forest, nitrogen deposition, nitrogen-retention, tropical forest",
author = "Jinhua Mao and Qinggong Mao and Per Gundersen and Gurmesa, {Geshere A.} and Wei Zhang and Juan Huang and Senhao Wang and Andi Li and Yufang Wang and Yabing Guo and Rongzhen Liu and Jiangming Mo and Mianhai Zheng",
note = "Publisher Copyright: {\textcopyright} 2021 John Wiley & Sons Ltd.",
year = "2022",
doi = "10.1111/gcb.16005",
language = "English",
volume = "28",
pages = "1529–1543",
journal = "Global Change Biology",
issn = "1354-1013",
publisher = "Wiley-Blackwell",
number = "4",

}

RIS

TY - JOUR

T1 - Unexpected high retention of 15N-labeled nitrogen in a tropical legume forest under long-term nitrogen enrichment

AU - Mao, Jinhua

AU - Mao, Qinggong

AU - Gundersen, Per

AU - Gurmesa, Geshere A.

AU - Zhang, Wei

AU - Huang, Juan

AU - Wang, Senhao

AU - Li, Andi

AU - Wang, Yufang

AU - Guo, Yabing

AU - Liu, Rongzhen

AU - Mo, Jiangming

AU - Zheng, Mianhai

N1 - Publisher Copyright: © 2021 John Wiley & Sons Ltd.

PY - 2022

Y1 - 2022

N2 - The responses of forests to nitrogen (N) deposition largely depend on the fates of deposited N within the ecosystem. Nitrogen-fixing legume trees widely occur in terrestrial forests, but the fates of deposited N in legume-dominated forests remain unclear, which limit a global evaluation of N deposition impacts and feedbacks on carbon sequestration. Here, we performed the first ecosystem-scale 15N labeling experiment in a typical legume-dominated forest as well as in a nearby non-legume forest to determine the fates of N deposition between two different forest types and to explore their underlying mechanisms. The 15N was sprayed bimonthly for 1 year to the forest floor in control and N addition (50 kg N ha−1 year−1 for 10 years) plots in both forests. We unexpectedly found a strong capacity of the legume forest to retain deposited N, with 75 ± 5% labeled N recovered in plants and soils, which was higher than that in the non-legume forest (56 ± 4%). The higher 15N recovery in legume forest was mainly driven by uptake by the legume trees, in which 15N recovery was approximately 15% more than that in the nearby non-legume trees. This indicates higher N-demand by the legume than non-legume trees. Mineral soil was the major sink for deposited N, with 39 ± 4% and 34 ± 3% labeled N retained in the legume and non-legume forests, respectively. Moreover, N addition did not significantly change the 15N recovery patterns of both forests. Overall, these findings indicate that legume-dominated forests act as a strong sink for deposited N regardless of high soil N availability under long-term atmospheric N deposition, which suggest a necessity to incorporate legume-dominated forests into N-cycling models of Earth systems to improve the understanding and prediction of terrestrial N budgets and the global N deposition effects.

AB - The responses of forests to nitrogen (N) deposition largely depend on the fates of deposited N within the ecosystem. Nitrogen-fixing legume trees widely occur in terrestrial forests, but the fates of deposited N in legume-dominated forests remain unclear, which limit a global evaluation of N deposition impacts and feedbacks on carbon sequestration. Here, we performed the first ecosystem-scale 15N labeling experiment in a typical legume-dominated forest as well as in a nearby non-legume forest to determine the fates of N deposition between two different forest types and to explore their underlying mechanisms. The 15N was sprayed bimonthly for 1 year to the forest floor in control and N addition (50 kg N ha−1 year−1 for 10 years) plots in both forests. We unexpectedly found a strong capacity of the legume forest to retain deposited N, with 75 ± 5% labeled N recovered in plants and soils, which was higher than that in the non-legume forest (56 ± 4%). The higher 15N recovery in legume forest was mainly driven by uptake by the legume trees, in which 15N recovery was approximately 15% more than that in the nearby non-legume trees. This indicates higher N-demand by the legume than non-legume trees. Mineral soil was the major sink for deposited N, with 39 ± 4% and 34 ± 3% labeled N retained in the legume and non-legume forests, respectively. Moreover, N addition did not significantly change the 15N recovery patterns of both forests. Overall, these findings indicate that legume-dominated forests act as a strong sink for deposited N regardless of high soil N availability under long-term atmospheric N deposition, which suggest a necessity to incorporate legume-dominated forests into N-cycling models of Earth systems to improve the understanding and prediction of terrestrial N budgets and the global N deposition effects.

KW - N tracer

KW - fate of deposited nitrogen

KW - mature-legume forest

KW - nitrogen deposition

KW - nitrogen-retention

KW - tropical forest

U2 - 10.1111/gcb.16005

DO - 10.1111/gcb.16005

M3 - Journal article

C2 - 34800306

AN - SCOPUS:85119984730

VL - 28

SP - 1529

EP - 1543

JO - Global Change Biology

JF - Global Change Biology

SN - 1354-1013

IS - 4

ER -

ID: 287624254