Abstract
The objective of this study was to analyze the relationships between moisture content and the flammability of campestral Cerrado species in the Jalapão region. For that, six species were collected (Trachypogon spicatus, Aristida sp., Davilla elliptica, Byrsonima verbascifolia, Hirtella ciliata and Dalbergia miscolobium) and analyzed in four moisture levels (H1, H2, H3 and H4). The tests were performed in the epirradiator, with 50 replicates of 1 g sample for each species, to obtain the ignition frequency (IF), the mean time to ignition (MTI), the time of combustion (MTC) and flame height (MFH). Correlations between moisture and other variables were r = 0.94 (MTI), r = -0.43 (MTC), r = -0.87 (MFH) and r = -0.73 (IF). The linear regression equations had R²aj values of 0.87 (MTI); 0.15 (MTC); 0.74 (MFH) and 0.50 (IF). There was influence of humidity in the change of flammability variables, however, there was little variation in the flammability values (FV), except for the species Aristida sp., and Dalbergia miscolobium, showing the high flammability of most species, even at the highest levels of moisture content.
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Claims 11
Claim · model-written summary
Moisture correlated positively with mean time to ignition at r = 0.94.
Not reportedOrgan / stage
Verbatim
e0“Correlations between moisture and other variables were r = 0.94 (MTI)”
t0“campestral Cerrado species”
Claim · model-written summary
Moisture correlated negatively with combustion time at r = -0.43.
Not reportedSetting
Verbatim
e0“Correlations between moisture and other variables were r = 0.94 (MTI), r = -0.43 (MTC)”
t0“campestral Cerrado species”
Claim · model-written summary
Moisture correlated negatively with flame height at r = -0.87.
Not reportedSetting
Verbatim
e0“r = -0.87 (MFH)”
t0“campestral Cerrado species”
Claim · model-written summary
Moisture correlated negatively with ignition frequency at r = -0.73.
Not reportedSetting
Verbatim
e0“r = -0.73 (IF)”
t0“campestral Cerrado species”
Claim · model-written summary
Adjusted regression R² for mean time to ignition was 0.87.
Verbatim
e0“The linear regression equations had R²aj values of 0.87 (MTI)”
t0“campestral Cerrado species”
Claim · model-written summary
Adjusted regression R² for combustion time was 0.15.
Verbatim
e0“0.15 (MTC)”
t0“campestral Cerrado species”
Claim · model-written summary
Adjusted regression R² for flame height was 0.74.
Verbatim
e0“0.74 (MFH)”
t0“campestral Cerrado species”
Claim · model-written summary
Adjusted regression R² for ignition frequency was 0.50.
Verbatim
e0“0.50 (IF)”
t0“campestral Cerrado species”
Claim · model-written summary
Flammability varied little with humidity and stayed high for most species even at the highest moisture.
Verbatim
e0“there was little variation in the flammability values (FV), except for the species Aristida sp., and Dalbergia miscolobium, showing the high flammability of most species, even at the highest levels of moisture content.”
Claim · model-written summary
Aristida sp. was an exception to the generally small humidity-related variation in flammability.
- Outcome
- excepte0
AristidaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“except for the species Aristida sp., and Dalbergia miscolobium”
Claim · model-written summary
Dalbergia miscolobium was an exception to the generally small humidity-related variation in flammability.
- Taxon
- Dalbergia miscolobium
Dalbergia miscolobiume0 - Outcome
- excepte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“except for the species Aristida sp., and Dalbergia miscolobium”