Evidence map›Paper›PMID 33846252›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2021

Nitrogen deposition accelerates soil carbon sequestration in tropical forests.

Xiankai Lu, Peter M Vitousek, Qinggong Mao, Frank S Gilliam, Yiqi Luo, Benjamin L Turner, Guoyi Zhou, Jiangming Mo

Open access · hybridAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 2 pooled it
28.6field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 2 syntheses or guidelines pooled it, 290 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Global Nitrogen Deposition Promotes Carbon Sink Formation in Terrestrial Ecosystems.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  6. Article
  7. Review
  8. Decadal extreme drought reduces alpine subsoil carbon stocks.Proceedings of the National Academy of Sciences of the United States of America · 2026
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  11. Review
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  19. Limiting Resources Define the Global Pattern of Soil Microbial Carbon Use Efficiency.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024
    Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 5 institutions in 3 countries.

Xiankai LuKey Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; luxiankai@scbg.ac.cn vitousek@stanford.edu mojm@scbg.ac.cn.ORCID 0000-0001-7720-6048
Peter M VitousekDepartment of Biology, Stanford University, Stanford, CA 94305; luxiankai@scbg.ac.cn vitousek@stanford.edu mojm@scbg.ac.cn.ORCID 0000-0003-4933-2666
Qinggong MaoKey Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
Frank S GilliamDepartment of Biology, University of West Florida, Pensacola, FL 32514.
Yiqi LuoCenter for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ 86011.
Benjamin L TurnerSmithsonian Tropical Research Institute, Apartado 0843-03092 Balboa, Ancon, Republic of Panama.
Guoyi ZhouKey Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
Jiangming MoKey Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; luxiankai@scbg.ac.cn vitousek@stanford.edu mojm@scbg.ac.cn.
South China Botanical Garden · CNNorthern Arizona University · USSmithsonian Tropical Research Institute · PAStanford University · USUniversity of West Florida · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Terrestrial ecosystem carbon (C) sequestration plays an important role in ameliorating global climate change. While tropical forests exert a disproportionately large influence on global C cycling, there remains an open question on changes in below-ground soil C stocks with global increases in nitrogen (N) deposition, because N supply often does not constrain the growth of tropical forests. We quantified soil C sequestration through more than a decade of continuous N addition experiment in an N-rich primary tropical forest. Results showed that long-term N additions increased soil C stocks by 7 to 21%, mainly arising from decreased C output fluxes and physical protection mechanisms without changes in the chemical composition of organic matter. A meta-analysis further verified that soil C sequestration induced by excess N inputs is a general phenomenon in tropical forests. Notably, soil N sequestration can keep pace with soil C, based on consistent C/N ratios under N additions. These findings provide empirical evidence that below-ground C sequestration can be stimulated in mature tropical forests under excess N deposition, which has important implications for predicting future terrestrial sinks for both elevated anthropogenic CO

Indexed as

CarbonCarbon SequestrationClimate ChangeEcosystemForestsNitrogenRainforestSoilSoil MicrobiologyTreesTropical ClimateCarbonNitrogenSoilatmospheric nitrogen depositionbelow-ground carbon sequestrationglobal changesnitrogen biogeochemistrysoil carbon storage

Identifiers

PMID33846252
PMCPMC8072245
OpenAlexW3153643393

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.