Classifying drivers of global forest loss
2018; American Association for the Advancement of Science; Volume: 361; Issue: 6407 Linguagem: Inglês
10.1126/science.aau3445
ISSN1095-9203
AutoresPhilip G. Curtis, Christy M. Slay, Nancy L. Harris, Alexandra Tyukavina, Matthew C. Hansen,
Tópico(s)Forest Ecology and Biodiversity Studies
ResumoGlobal maps of forest loss depict the scale and magnitude of forest disturbance, yet companies, governments, and nongovernmental organizations need to distinguish permanent conversion (i.e., deforestation) from temporary loss from forestry or wildfire. Using satellite imagery, we developed a forest loss classification model to determine a spatial attribution of forest disturbance to the dominant drivers of land cover and land use change over the period 2001 to 2015. Our results indicate that 27% of global forest loss can be attributed to deforestation through permanent land use change for commodity production. The remaining areas maintained the same land use over 15 years; in those areas, loss was attributed to forestry (26%), shifting agriculture (24%), and wildfire (23%). Despite corporate commitments, the rate of commodity-driven deforestation has not declined. To end deforestation, companies must eliminate 5 million hectares of conversion from supply chains each year.
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