| Full text | |
| Author(s): |
Rosan, Thais M.
[1]
;
Aragao, Luiz E. O. C.
[1]
;
Oliveras, Imma
[2]
;
Phillips, Oliver L.
[3]
;
Malhi, Yadvinder
[2]
;
Gloor, Emanuel
[3]
;
Wagner, Fabien H.
[1]
Total Authors: 7
|
| Affiliation: | [1] Natl Inst Space Res, Remote Sensing Div, Trop Ecosyst & Environm Sci Lab, Sao Jose Dos Campos - Brazil
[2] Univ Oxford, Sch Geog & Environm, Environm Change Inst, Oxford - England
[3] Univ Leeds, Sch Geog, Ecol & Global Change, Leeds, W Yorkshire - England
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | Geophysical Research Letters; v. 46, n. 12, p. 6594-6603, JUN 28 2019. |
| Web of Science Citations: | 0 |
| Abstract | |
Woody encroachment is occurring in all tropical savannas of the world. However, in the Brazilian savanna (the Cerrado), the extent of this phenomenon is still poorly documented. Here woody encroachment was quantified throughout the Cerrado biome and transitional ecotones using a trend analysis of the annual maximum of enhanced vegetation index obtained from the Moderate Resolution Imaging Spectroradiometer. The associations with potential local drivers, such as fire and land use regime, were assessed using satellite data of land cover and fire regime. We found that 19% of the remaining native vegetation showed significant evidence of woody encroachment in the last 15 years and 7% exhibited degradation processes. The local factors that favored woody expansion in 19% of the biome were a decrease of fire (34%) and land use abandonment (26%). Our study highlights that local human-associated drivers are playing a major role in woody encroachment and savanna degradation. (AU) | |
| FAPESP's process: | 16/17652-9 - Functional diversity of intact and regenerating Amazon, Atlantic Forest and Cerrado systems using hyperspectral imagery |
| Grantee: | Fabien Hubert Wagner |
| Support Opportunities: | Scholarships in Brazil - Young Researchers |
| FAPESP's process: | 15/50484-0 - Functional diversity of intact and regenerating Amazon, Atlantic Forest, and Cerrado systems using hyperspectral imagery |
| Grantee: | Fabien Hubert Wagner |
| Support Opportunities: | Research Grants - Young Investigators Grants |