John L Field
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johnlfield.bsky.social
John L Field
@johnlfield.bsky.social
Researching bioenergy, soil carbon & land-based mitigation. NCA5 author, Colorado State U. Natural Resource Ecology Lab alum. he/him
High-level conclusion: the environmental footprint of poplar-derived cellulosic ethanol production is much more sensitive to poplar yield than it is to poplar biomass quality (sugar content).

Similar what we concluded previously for switchgrass— doi.org/10.1021/acss...
September 19, 2025 at 6:33 PM
Thanks to cbi.ornl.gov and DOE/BER, the ORNL LDRD program, @ultracricket.bsky.social, @chrisinknox.bsky.social, and other great coauthors not here on Bluesky!
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CBI is a interdisciplinary center. We have broad and challenging scientific goals. We strongly believe that the only way to achieve these goals is by engaging multiple viewpoints. This is accomplished...
cbi.ornl.gov
September 2, 2025 at 2:42 PM
Biologically diverse long-term common gardens can provide unique insights into plant controls on biogeochemical cycling, even if they weren't originally designed for it. We're now sampling 300+ other genotypes at this site, to try to resolve the controls and mechanisms affecting soil C & N cycling.
September 2, 2025 at 2:42 PM
We found:
- surface mineral-associated C stock differences under black cottonwood trees of different genotype.
- soil C associated more strongly with root elemental content than root lignin, N, or aboveground biomass.
- surface soil C stocks diverged by genotype at rates of 1–4 Mg/ha/y.
September 2, 2025 at 2:42 PM