What question did this study set out to answer?

To determine how climate, soil texture, and plant functional types influence the vertical distribution of soil organic carbon and to calculate global carbon storage down to a depth of three meters.

April 1, 2000Ecological Applications

The Vertical Distribution of Soil Organic Carbon and Its Relation to Climate and Vegetation

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Authors

EJEstéban G. JobbágyConsejo Nacional de Investigaciones Científicas y Técnicas RJRobert B. JacksonBrigham Young University

Discussion

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Implication

Global database analysis reveals plant functional types and clay content govern vertical soil organic carbon storage, highlighting deeper soil layers for carbon sequestration strategies.

Key Points

To determine how climate, soil texture, and plant functional types influence the vertical distribution of soil organic carbon and to calculate global carbon storage down to a depth of three meters.
Analyzed mineral soil layers across global profiles (N > 2700) sourced from three worldwide databases matched with climate, vegetation, and land-use data.
Evaluated vertical soil organic carbon (SOC) depth patterns across shrublands, grasslands, and forests while controlling for climate ranges.
Relative SOC depth distribution in the upper 20 cm compared to the first meter averaged 33% in shrublands, 42% in grasslands, and 50% in forests, consistently remaining deepest in shrublands across all climates (P < 0.05).
Total SOC content increased with precipitation and clay content but decreased with temperature, with climatic variables dominating shallow soil and clay content dominating deeper horizons.
Global SOC storage to 3 m depth was calculated at 2344 Pg C (56% higher than the top meter's 1502 Pg C), containing 491 Pg C and 351 Pg C in the second and third meters, respectively.

Cite This Study

Jobbágy et al. (2000) studied this question.

synapsesocial.com/papers/69d89b7233ca018b39ae3c65 https://doi.org/10.1890/1051-0761(2000)010[0423:tvdoso]2.0.co;2

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April 1, 2000Ecological Applications

The Vertical Distribution of Soil Organic Carbon and Its Relation to Climate and Vegetation

View Full Paper

Ask AI

Bookmark

Authors

EJEstéban G. JobbágyConsejo Nacional de Investigaciones Científicas y Técnicas RJRobert B. JacksonBrigham Young University

Discussion

Member takes

Implication

Global database analysis reveals plant functional types and clay content govern vertical soil organic carbon storage, highlighting deeper soil layers for carbon sequestration strategies.

Key Points

To determine how climate, soil texture, and plant functional types influence the vertical distribution of soil organic carbon and to calculate global carbon storage down to a depth of three meters.
Analyzed mineral soil layers across global profiles (N > 2700) sourced from three worldwide databases matched with climate, vegetation, and land-use data.
Evaluated vertical soil organic carbon (SOC) depth patterns across shrublands, grasslands, and forests while controlling for climate ranges.
Relative SOC depth distribution in the upper 20 cm compared to the first meter averaged 33% in shrublands, 42% in grasslands, and 50% in forests, consistently remaining deepest in shrublands across all climates (P < 0.05).
Total SOC content increased with precipitation and clay content but decreased with temperature, with climatic variables dominating shallow soil and clay content dominating deeper horizons.
Global SOC storage to 3 m depth was calculated at 2344 Pg C (56% higher than the top meter's 1502 Pg C), containing 491 Pg C and 351 Pg C in the second and third meters, respectively.

Cite This Study

Jobbágy et al. (2000) studied this question.

synapsesocial.com/papers/69d89b7233ca018b39ae3c65 https://doi.org/10.1890/1051-0761(2000)010[0423:tvdoso]2.0.co;2

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