The use of newly assimilated photosynthates by soil autotrophic and heterotrophic respiration on a diurnal scale

Ono, Moeka; Mitra, Bhaskar; Baniya, Benju; Kim, Dohee; Noormets, Asko

doi:https://doi.org/10.5194/bg-22-5833-2025

Articles | Volume 22, issue 20

https://doi.org/10.5194/bg-22-5833-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-22-5833-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 20

Research article

|

22 Oct 2025

Research article |

| 22 Oct 2025

The use of newly assimilated photosynthates by soil autotrophic and heterotrophic respiration on a diurnal scale

Moeka Ono, Bhaskar Mitra, Benju Baniya, Dohee Kim, and Asko Noormets

Supplement

https://doi.org/10.5194/bg-22-5833-2025-supplement

Data sets

Software from: The Use of Newly Assimilated Photosynthates by Soil Autotrophic and Heterotrophic Respiration on a Diurnal Scale Moeka Ono https://github.com/moekaono/CRK_cont_SR/tree/main/Data

AmeriFlux BASE US-CRK Davy Crockett National Forest Asko Noormets https://doi.org/10.17190/AMF/2204055

ata and Software from: The use of newly assimilated photosynthates by soil autotrophic and heterotrophic respiration on a diurnal scale. In The use of newly assimilated photosynthates by soil autotrophic and heterotrophic respiration on a diurnal scale M. Ono and A. Noormets https://doi.org/10.5281/zenodo.17176648

Model code and software

Software from: The Use of Newly Assimilated Photosynthates by Soil Autotrophic and Heterotrophic Respiration on a Diurnal Scale Moeka Ono https://github.com/moekaono/CRK_cont_SR/tree/main/Codes

ata and Software from: The use of newly assimilated photosynthates by soil autotrophic and heterotrophic respiration on a diurnal scale. In The use of newly assimilated photosynthates by soil autotrophic and heterotrophic respiration on a diurnal scale M. Ono and A. Noormets https://doi.org/10.5281/zenodo.17176648

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Short summary

Cospectral analysis was used to quantify coupling of autotrophic and heterotrophic soil respiration (Ra and Rh) to plant carbohydrate status in a subtropical pine forest in the southern US. Rh showed stronger diurnal links with gross primary productivity (GPP) than Ra, and lagged GPP by 2–4 h, suggesting rapid transfer of carbohydrates to the soil. Soil temperature and moisture had strong cospectral peaks at synoptic scales, but were not causal drivers at the diurnal scale.