FOREST BIOMASS AND CARBON ESTIMATION USING VEGETATION INDICES AND LEAF AREA INDEX
Among the consequences of the current dynamics of manmade land use and cover, forest fragmentation results in a large number of isolated fragments of different sizes. Forest provides many environmental services such as carbon sequestration and storage in the form of biomass, demonstrating the crucia...
| Published in: | Revista Brasileira de Geografia Física |
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| Main Authors: | , , , |
| Other Authors: | |
| Format: | Article in Journal/Newspaper |
| Language: | English |
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Universidade Federal de Pernambuco
2022
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| Subjects: | |
| Online Access: | https://periodicos.ufpe.br/revistas/rbgfe/article/view/252886 https://doi.org/10.26848/rbgf.v15.4.p1815-1826 |
| Summary: | Among the consequences of the current dynamics of manmade land use and cover, forest fragmentation results in a large number of isolated fragments of different sizes. Forest provides many environmental services such as carbon sequestration and storage in the form of biomass, demonstrating the crucial role of native forests and the need to develop new methods that estimate forest biomass and carbon by non-destructive methods. This work aimed to develop a methodology to study and estimate the dynamics of forest biomass and carbon stock in successive stages of regeneration in the northwestern region of Rio Grande do Sul, which was the study area. Yearly images from 1985 to 2014 of the Normalized Difference Vegetation Index - NDVI were calculated, and a global regression was archived to obtain the leaf area index (LAI) and estimate the forest biomass. It was possible to observe the good relationship between the increase in LAI as a function of the NDVI, estimating the forest biomass of 61,156 Gg in 2014, where 602 Gg correspond to the initial regeneration stage, 8,287 Gg for the medium stage, and 52,267 Gg for the advanced stage of regeneration. The total estimated carbon for the study area in 2014 was 27,520 Gg CO2 of which 271 Gg were present in the initial stage, 3,729 Gg in the medium stage, and 23,520 Gg in the advanced stage of regeneration.Keywords: forest succession, remote sensing, normalized difference vegetation index (NDVI). Estimativa da biomassa e carbono florestal com uso de índices de vegetação e índice de área foliar R E S U M OEm meio às consequências da atual dinâmica do uso e ocupação do solo causadas pelo homem, está a fragmentação das florestas, resultando em um grande número de fragmentos isolados e de diferentes tamanhos. Entre os diversos serviços ambientais prestados, se destaca o sequestro e estocagem do carbono na forma de biomassa, demonstrando assim o fundamental papel das florestas nativas e a necessidade de desenvolver novos métodos que estimem a biomassa e carbono de florestas por ... |
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