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| DOI | 10.1088/1748-9326/ab76db |
| Unmasking secondary vegetation dynamics in the Brazilian Amazon | |
| Nunes S.; Oliveira L.; Siqueira J.; Morton D.C.; Souza C.M. | |
| 发表日期 | 2020 |
| ISSN | 17489318 |
| 卷号 | 15期号:3 |
| 英文摘要 | Secondary vegetation (SV) from land abandonment is a common transition phase between agricultural uses following tropical deforestation. The impact of SV on carbon sequestration and habitat fragmentation across tropical forest frontiers therefore depends on SV dynamics and demographics. Here, we used time series of annual MapBiomas land cover data to generate the first estimates of SV extent, age, and net carbon uptake in the Brazilian Amazon between 1985 and 2017. SV increased over time, totaling 12 Mha in 2017, 44% of which was ≤5 years old. Between 1988 and 2017, 19.6 Mha of SV was cleared, adding 45.5% to the area of primary deforestation detected by the Brazilian monitoring system (PRODES). Rates of SV loss have exceeded PRODES deforestation since 2011. Based on the age and extent of gains and losses, SV was a small net carbon sink during this period (8.9 Tg C yr-1). As SV is not formally protected by national environmental legislation or monitored by PRODES, long-term benefits from SV in the Brazilian Amazon remain uncertain. © 2020 The Author(s). Published by IOP Publishing Ltd. |
| 英文关键词 | Amazon; carbon; forest restoration; monitoring systems; secondary vegetation |
| 语种 | 英语 |
| scopus关键词 | Agricultural robots; Carbon; Conservation; Deforestation; Tropics; Vegetation; Amazon; Carbon sequestration; Environmental legislations; Forest restoration; Habitat fragmentation; Monitoring system; Secondary vegetation; Tropical deforestation; Monitoring; abandoned land; carbon sink; deforestation; environmental legislation; land cover; monitoring system; restoration ecology; vegetation dynamics; Amazonas [Brazil]; Brazil |
| 来源期刊 | Environmental Research Letters
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/154144 |
| 作者单位 | Instituto Tecnológico Vale, Pará, Brazil; Instituto do Homem e Meio Ambiente da Amazônia-Imazon, Pará, Brazil; Independent consultant, Pará, Brazil; NASA Goddard Space Flight Center, Greenbelt, MD, United States |
| 推荐引用方式 GB/T 7714 | Nunes S.,Oliveira L.,Siqueira J.,et al. Unmasking secondary vegetation dynamics in the Brazilian Amazon[J],2020,15(3). |
| APA | Nunes S.,Oliveira L.,Siqueira J.,Morton D.C.,&Souza C.M..(2020).Unmasking secondary vegetation dynamics in the Brazilian Amazon.Environmental Research Letters,15(3). |
| MLA | Nunes S.,et al."Unmasking secondary vegetation dynamics in the Brazilian Amazon".Environmental Research Letters 15.3(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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