Evidence map›Paper›PMID 34168336›Full record

ArticleNature ecology & evolution2021

The global distribution and environmental drivers of aboveground versus belowground plant biomass.

Haozhi Ma, Lidong Mo, Thomas W Crowther, Daniel S Maynard, Johan van den Hoogen, Benjamin D Stocker, César Terrer, Constantin M Zohner

Abstract read
PubMed Publisher
In one paragraph

Article in Nature ecology & evolution, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

67 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Latitudinal Variation in the Responses of InvasivePlants (Basel, Switzerland) · 2026
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7 more citing papers are in PubMed but not listed here.

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.

Haozhi Ma *Institute of Integrative Biology, ETH Zurich (Swiss Federal Institute of Technology), Zurich, Switzerland.ORCID http://orcid.org/0000-0003-0709-1438
Lidong Mo *Institute of Integrative Biology, ETH Zurich (Swiss Federal Institute of Technology), Zurich, Switzerland.ORCID http://orcid.org/0000-0003-3805-7638
Thomas W CrowtherInstitute of Integrative Biology, ETH Zurich (Swiss Federal Institute of Technology), Zurich, Switzerland.ORCID http://orcid.org/0000-0001-5674-8913
Daniel S MaynardInstitute of Integrative Biology, ETH Zurich (Swiss Federal Institute of Technology), Zurich, Switzerland.
Johan van den HoogenInstitute of Integrative Biology, ETH Zurich (Swiss Federal Institute of Technology), Zurich, Switzerland.ORCID http://orcid.org/0000-0001-6624-8461
Benjamin D StockerInstitute of Integrative Biology, ETH Zurich (Swiss Federal Institute of Technology), Zurich, Switzerland.ORCID http://orcid.org/0000-0003-2697-9096
César TerrerPhysical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, USA.ORCID http://orcid.org/0000-0002-5479-3486
Constantin M ZohnerInstitute of Integrative Biology, ETH Zurich (Swiss Federal Institute of Technology), Zurich, Switzerland. constantin.zohner@gmail.com.ORCID http://orcid.org/0000-0002-8302-4854

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A poor understanding of the fraction of global plant biomass occurring belowground as roots limits our understanding of present and future ecosystem function and carbon pools. Here we create a database of root-mass fractions (RMFs), an index of plant below- versus aboveground biomass distributions, and generate quantitative, spatially explicit global maps of RMFs in trees, shrubs and grasses. Our analyses reveal large gradients in RMFs both across and within vegetation types that can be attributed to resource availability. High RMFs occur in cold and dry ecosystems, while low RMFs dominate in warm and wet regions. Across all vegetation types, the directional effect of temperature on RMFs depends on water availability, suggesting feedbacks between heat, water and nutrient supply. By integrating our RMF maps with existing aboveground plant biomass information, we estimate that in forests, shrublands and grasslands, respectively, 22%, 47% and 67% of plant biomass exists belowground, with a total global belowground fraction of 24% (20-28%), that is, 113 (90-135) Gt carbon. By documenting the environmental correlates of root biomass allocation, our results can inform model projections of global vegetation dynamics under current and future climate scenarios.

Indexed as

EcosystemPlantsBiomassCarbonForestsCarbon

Identifiers

PMID34168336

What OpenQuestion holds

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Registered trials

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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.