Cited by 3,071Soil Carbon and Nitrogen DynamicsForest ecology and managementPlant Water Relations and Carbon Dynamics

A global analysis of root distributions for terrestrial biomes

Jackson, R. B., Canadell, J., Ehleringer, J. R., Mooney, H. A., Sala, O. E., Schulze, E. D.·1996·Oecologia

Abstract

Understanding and predicting ecosystem functioning (e.g., carbon and water fluxes) and the role of soils in carbon storage requires an accurate assessment of plant rooting distributions. Here, in a comprehensive literature synthesis, we analyze rooting patterns for terrestrial biomes and compare distributions for various plant functional groups. We compiled a database of 250 root studies, subdividing suitable results into 11 biomes, and fitted the depth coefficient β to the data for each biome (Gale and Grigal 1987). β is a simple numerical index of rooting distribution based on the asymptotic equation Y=1-β d , where d = depth and Y = the proportion of roots from the surface to depth d. High values of β correspond to a greater proportion of roots with depth. Tundra, boreal forest, and temperate grasslands showed the shallowest rooting profiles (β=0.913, 0.943, and 0.943, respectively), with 80-90% of roots in the top 30 cm of soil; deserts and temperate coniferous forests showed the deepest profiles (β=0.975 and 0.976, respectively) and had only 50% of their roots in the upper 30 cm. Standing root biomass varied by over an order of magnitude across biomes, from approximately 0.2 to 5 kg m -2 . Tropical evergreen forests had the highest root biomass (5 kg m -2 ), but other forest biomes and sclerophyllous shrublands were of similar magnitude. Root biomass for croplands, deserts, tundra and grasslands was below 1.5 kg m -2 . Root/shoot (R/S) ratios were highest for tundra, gra…

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Crossref · 10.1007/bf00333714

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  • Allocation of C to root biomass is dramatically lower in traditional annual crops than in temperate grasslands, with globally averaged root:shoot ratios of 0.1 and 3.7, respectively.

    “Allocation of C to root biomass is dramatically lower in traditional annual crops than in temperate grasslands, with globally averaged root : shoot ratios of 0.1 and 3.7, respectively (Jackson et al., 1996).”

    From Changes in soil organic carbon under biofuel crops (2009) · cites this paper as Jackson et al., 1996

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Authors
Jackson, R. B., Canadell, J., Ehleringer, J. R., Mooney, H. A., Sala, O. E., & Schulze, E. D.
Affiliations
  • The University of Texas at Austin (US)
  • Stanford University (US)
  • University of Utah (US)
  • Universidad de Buenos Aires (AR)
  • University of Bayreuth (DE)
Corresponding author
Jackson, R. B.
Venue
Oecologia
Published
1996-11
Volume
108
Issue
3
Pages
389-411
ISSN
  • 0029-8549 (ISSN-L)
  • 1432-1939
OpenAlex
W2151303612
Cited by
3,071
References
260
Citations by year
2026: 146 · 2025: 147 · 2024: 140 · 2023: 169 · 2022: 140 · 2021: 183 · 2020: 131 · 2019: 155 · 2018: 128 · 2017: 122 · 2016: 152 · 2015: 115 · 2014: 130 · 2013: 140 · 2012: 136
FWCI
5.53
Type
journal article
Language
en
Open access
closed
Locations
  • Oecologia (publishedVersion)
  • PubMed (publishedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Physical Sciences › Environmental Science › Nature and Landscape Conservation › Forest ecology and management
  • Physical Sciences › Environmental Science › Global and Planetary Change › Plant Water Relations and Carbon Dynamics
Keywords
root distribution, root depth, terrestrial biomes, root biomass, root-shoot ratio, plant functional groups, soil carbon storage, carbon and water fluxes, tundra, boreal forest, temperate grassland, tropical evergreen forest, desert, cropland, Poaceae, shrubs, trees

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