| 1. Identity statement | ||||
| Reference Type | Conference Paper (Conference Proceedings) | |||
| Site | mtc-m21d.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34T/4AC8275 | |||
| Repository | sid.inpe.br/mtc-m21d/2023/12.11.13.08 | |||
| Metadata Repository | sid.inpe.br/mtc-m21d/2023/12.11.13.08.06 | |||
| Metadata Last Update | 2024:01.12.15.12.27 (UTC) administrator | |||
| Secondary Key | INPE--PRE/ | |||
| Citation Key | CsillikKLFPGOSS:2023:HiAbCa | |||
| Title | High-resolution aboveground carbon changes in the Brazilian Amazon using repeated airborne lidar  | |||
| Year | 2023 | |||
| Access Date | 2025, July 13 | |||
| Secondary Type | PRE CI | |||
| 2. Context | ||||
| Author | 1 Csillik, Ovidiu 2 Keller, Michael 3 Longo, Marcos 4 Ferraz, Antonio 5 Pinagé, Ekena Rangel 6 Görgens, Eric Bastos 7 Ometto, Jean Pierre Henry Balbaud 8 Silgueiro, Vinicius 9 Sattchi, Sassan S. | |||
| Group | 1 2 3 4 5 6 7 DIPE3-COGPI-INPE-MCTI-GOV-BR | |||
| Affiliation | 1 California Institute of Technology 2 California Institute of Technology 3 Lawrence Berkeley National Laboratory 4 California Institute of Technology 5 Oregon State University 6 Universidade Federal dos Vales do Jequitinhonha e Mucuri 7 Instituto Nacional de Pesquisas Espaciais (INPE) 8 Instituto Centro de Vida (ICV) 9 California Institute of Technology | |||
| Author e-Mail Address | 1 2 3 4 5 6 7 jean.ometto@inpe.br | |||
| Conference Name | AGU FAll Meeting | |||
| Conference Location | San Francisco, CA | |||
| Date | 11-15 Dec. 2023 | |||
| Publisher | AGU | |||
| Book Title | Proceedings | |||
| History (UTC) | 2023-12-11 13:08:06 :: simone -> administrator :: 2024-01-12 15:12:27 :: administrator -> simone :: 2023 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Version Type | publisher | |||
| Abstract | The Brazilian Amazon is a hotspot of deforestation and forest degradation caused by logging, fire, and deforestation-associated fragmentation and edge effects. While the extent of deforestation and associated carbon losses are relatively well known, the quantification of the carbon losses caused by degradation and the carbon gained by recovery of degraded forest ranges widely and is difficult to quantify accurately regionally. We analyzed forest changes and associated carbon gains and losses by using repeated randomized airborne lidar surveys for 2016 and 2017-2018 over 99 different transects, totaling 48,279 ha of forest throughout the Brazilian Arc of Deforestation. We directly measured changes in canopy height between the two airborne lidar campaigns, and gridded the surveyed area into 50 x 50 m cells to estimate aboveground carbon using a previously calibrated model based on the top of canopy height. We classified every 0.25 ha cell into one of the seven forest transition classes: deforestation, forest fires, logging, windthrows, other disturbances, forest growth, and no change. We found that disturbances directly attributed to human activity impacted 4.2% of the survey area while windthrows and other disturbances affected 2.7% and 14.7% respectively. By extrapolating the lidar-based statistics to the study area (544,300 km2), we found that 24.1, 24.2, and 14.5 Tg C y-1 were lost through deforestation, fires, and logging, respectively. The losses due to large windthrows (21.5 Tg C y-1) and other disturbances (50.3 Tg C y-1) were partially counterbalanced by forest growth (44.1 Tg C y-1). Our high-resolution estimates demonstrated a greater loss of carbon through forest degradation than through deforestation and a net loss of carbon of 90.5 ± 20.8 Tg C y-1 for the study region attributable to both anthropogenic and natural processes. Our regional detailed quantification of carbon changes highlights that degradation is a major driver of the carbon budget of the Amazon tropical forest. | |||
| Area | CST | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção a partir de 2021 > COGPI > High-resolution aboveground carbon... | |||
| doc Directory Content | there are no files | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| Language | en | |||
| User Group | simone | |||
| Visibility | shown | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Next Higher Units | 8JMKD3MGPCW/46L2FGP | |||
| Host Collection | urlib.net/www/2021/06.04.03.40 | |||
| 6. Notes | ||||
| Empty Fields | archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor format isbn issn keywords label lineage mark mirrorrepository nextedition notes numberoffiles numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisheraddress readergroup readpermission resumeid rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle size sponsor subject targetfile tertiarymark tertiarytype type url volume | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||