Illegal Selective Logging and Forest Fires in the Northern Brazilian Amazon
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Area
2.2. Data Collection
2.3. Carbon from the Biomass Equation and the Use of the Correction Factor of the Dominant Height
2.4. Tree Mortality and Carbon Stock
2.5. Mapping of Illegal Selective Logging and Forest Fires with Claslite and INPE/Queimadas, and Restrictions due to Forest Physiognomy
3. Results
3.1. Forest Inventory (FI) and Timber Measurement (TM)
3.2. Tree Mortality and Forest Carbon Stock
3.3. Illegal Selective Logging and Forest Fires in the Southern Roraima
3.4. Fire Incidence in Roraima (2016 to 2017) and Flona Anauá
3.5. Accuracy Assessment of Mapping Performed by CLASlite
4. Discussion
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Forest Phytophysiognomy 1 | Forest Inventory (FI) | Timber Measurement (TM) | |||
---|---|---|---|---|---|
Density (trees·ha−1) | DBH (cm) | DBH (cm) | H (m) | Hdom. (m) | |
LOt ² Forested shade-loving campinarana (Ld)/Dense-canopy rainforest submontane (Ds) | 491 ± 15 | 21 ± 0.3 | 37 ± 5 | 21 ± 1 | 33 ± 1 |
Description | Tree Mortality | Forest Carbon Stock | |||
---|---|---|---|---|---|
Density (Dead Trees·ha−1) | Total Dead Trees in FI (30 ha) | Percentage of the FI (%) | Carbon Losses (Mg ha−1) | Percentage of the FI (%) | |
Natural Process ¹ | 21 ± 3 | 638 | 4.3 | - | - |
Human Process ² | 19 ± 9 | 575 | 3.9 | 6 ± 3 | 3.5 |
Total | 40 ± 9 | 1213 | 8.2 | 6 ± 3 | 3.5 |
Description | Forest Areas (km²) | Non-Forest Areas (km²) | |||||
---|---|---|---|---|---|---|---|
LOt ¹ | Flona Anauá | Mosaic Area | Roraima ² (%) | Flona Anauá | Mosaic Area | Roraima ² (%) | |
Illegal selective logging and forest fires | 2.8 | 6 | 357 | 0.16 | - | - | - |
Forest disturbances by forest fires | - | - | - | - | 0.2 | 34 | 0.01 |
Deforestation | 8 | 8 | 796 | 0.35 | 0.1 | 152 | 0.07 |
Total | 10.8 | 14 | 1153 | 0.51 | 0.3 | 186 | 0.08 |
Class ¹ | Validation ² (Ground Truth - In Situ) | Errors (%) | Accuracy (%) | |||||||
---|---|---|---|---|---|---|---|---|---|---|
C1 | C2 | C3 | C4 | Total | Commission | Omission | Producer | User | ||
CLASlite | C1 | 89 | 8 | 0 | 14 | 111 | 20 | 11 | 89 | 80 |
C2 | 0 | 75 | 0 | 1 | 76 | 1 | 25 | 75 | 99 | |
C3 | 5 | 12 | 98 | 2 | 117 | 16 | 2 | 98 | 84 | |
C4 | 6 | 5 | 2 | 83 | 96 | 14 | 17 | 83 | 86 | |
Total | 100 | 100 | 100 | 100 | 400 | |||||
Overall Accuracy = 86% | ||||||||||
Kappa Index = 82% |
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M. Condé, T.; Higuchi, N.; J. N. Lima, A. Illegal Selective Logging and Forest Fires in the Northern Brazilian Amazon. Forests 2019, 10, 61. https://doi.org/10.3390/f10010061
M. Condé T, Higuchi N, J. N. Lima A. Illegal Selective Logging and Forest Fires in the Northern Brazilian Amazon. Forests. 2019; 10(1):61. https://doi.org/10.3390/f10010061
Chicago/Turabian StyleM. Condé, Tiago, Niro Higuchi, and Adriano J. N. Lima. 2019. "Illegal Selective Logging and Forest Fires in the Northern Brazilian Amazon" Forests 10, no. 1: 61. https://doi.org/10.3390/f10010061
APA StyleM. Condé, T., Higuchi, N., & J. N. Lima, A. (2019). Illegal Selective Logging and Forest Fires in the Northern Brazilian Amazon. Forests, 10(1), 61. https://doi.org/10.3390/f10010061