Fire in a sub-humid woodland: The balance of carbon sequestration and habitat conservation

Yao, Jian; Murray, Darrel B.; Adhikari, Arjun; White, Joseph D.

doi:10.1016/j.foreco.2012.05.042

Cited by 10 publications

(13 citation statements)

References 108 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The C and nitrogen (N) concentrations of the HF‐treated soil samples were then determined by thermal combustion with an elemental analyzer (Thermo Flash 2000 series). The percent recovery rates of C after the HF treatment ( C R ) were calculated as

C_{R} = \frac{C_{HF} \times θ}{C_{orig}}

where C HF is the percent organic C weight in the HF‐treated soil, C orig is the organic C weight percent in the untreated soil [ Yao et al ., ], and θ is the percent of soil mass remaining after the HF treatment.…”

Section: Methodsmentioning

confidence: 99%

“…This was accomplished using data and methods described in Yao et al . [] using top of the soil BC concentration, bulk density, and modeled soil depth, with assumed variable C content with soil depth.…”

Section: Methodsmentioning

confidence: 99%

“…where C HF is the percent organic C weight in the HF-treated soil, C orig is the organic C weight percent in the untreated soil [Yao et al, 2012], and θ is the percent of soil mass remaining after the HF treatment.…”

Section: Bc Detection Using 13 C Nmrmentioning

confidence: 99%

“…To investigate the potential of soil BC as a long-term storage pool of terrestrial C, we assessed the concentration of wildland fire-derived soil BC from sites in a subhumid upland woodland for which the fire history was previously reconstructed using an extensive tree ring survey [Yao et al, 2012;Murray et al, 2013]. We measured the soil BC concentrations at these sites using NMR and MIRS techniques and compared to concentrations at sites with recent, old, and no documented fire occurrences.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Changes in fire-derived soil black carbon storage in a subhumid woodland

Yao

Hockaday

Murray

et al. 2014

J. Geophys. Res. Biogeosci.

Self Cite

View full text Add to dashboard Cite

Fire-derived black carbon (BC) in soil, including charcoal, represents an important part in terrestrial carbon cycling due to its assumed long persistence in soil. Soil BC concentrations for a woodland in central Texas, USA, was found from study plots with a fire scar dendrochronology spanning 100 years. BC values were initially determined from 13 C nuclear magnetic resonance (NMR) spectroscopy. The NMR-based BC concentrations were used to calibrate midinfrared vibrational spectra (MIRS) for evaluation as a less expensive and expedient technique. However, unexpectedly high BC values from the MIRS method were found for sites without evidence of fire for the past 100 years. Estimation of BC from NMR technique showed mean BC concentration of 2.73 ± 3.06 g BC kg À1 (0.91 ± 0.51 kg BC m À2 ) for sites with fire occurrence within the last 40 years compared with BC values of 1.21 ± 1.70 g BC kg À1 soil (0.18 ± 0.14 kg BC m À2 ) for sites with fire 40-100 years ago. Sites with no tree ring evidence of fire during the last 100 years had the lowest mean soil BC concentration of 0.05 ± 0.11 g BC kg À1 (0.02 ± 0.03 kg BC m À2 ). Molecular proxies of stability (lignin/N) and decomposition (Alkyl C/O-Alkyl C) showed no differences across the sites, indicating low potential for BC mineralization. Modeled soil erosion and time since fire from fire scar data showed that soil BC concentrations were inversely correlated. These results suggest that the addition of BC may be limited by topography and timing of fire.

show abstract

C_{R} = \frac{C_{HF} \times θ}{C_{orig}}

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Bc Detection Using 13 C Nmrmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Changes in fire-derived soil black carbon storage in a subhumid woodland

Yao

Hockaday

Murray

et al. 2014

J. Geophys. Res. Biogeosci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…As a function of varying precipitation inputs, topography, soil water-holding capacity, and vegetation-specific transpiration rates, woody cover can reach a site maximum and then show short-term fluctuation rather than directional change due to climatic variability and disturbance (Browning et al 2008). In areas that have reached a potential climatic site maximum of woody vegetation cover, frequent disturbances, such as severe drought and intense wildfire, decrease woody vegetation cover, while less frequent, less intense disturbances, such as low-intensity fire, may increase the likelihood of woody vegetation persistence by reducing understory competition (Yao et al 2012).…”

Section: Introductionmentioning

confidence: 99%