Journal
ENVIRONMENTAL RESEARCH LETTERS
Volume 11, Issue 3, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1748-9326/11/3/034008
Keywords
global change; deforestation; monitoring; Landsat; remote sensing
Funding
- Global Forest Watch through Norway's International Climate and Forest Initiative
- United States Interagency SilvaCarbon program
- Gordon and Betty Moore Foundation
- United States Agency for International Development through the Central Africa Regional Program for the Environment
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A Landsat-based humid tropical forest disturbance alert was implemented for Peru, the Republic of Congo and Kalimantan, Indonesia. Alerts were mapped on a weekly basis as new terrain-corrected Landsat 7 and 8 images were made available; results are presented for all of 2014 and through September 2015. The three study areas represent different stages of the forest land use transition, with all featuring a variety of disturbance dynamics including logging, smallholder agriculture, and agroindustrial development. Results for Peru were formally validated and alerts found to have very high user's accuracies and moderately high producer's accuracies, indicating an appropriately conservative product suitable for supporting land management and enforcement activities. Complete pan-tropical coverage will be implemented during 2016 in support of the Global Forest Watch initiative. To date, Global Forest Watch produces annual global forest loss area estimates using a comparatively richer set of Landsat inputs. The alert product is presented as an interim update of forest disturbance events between comprehensive annual updates. Results from this study are available for viewing and download at http://glad.geog.umd.edu/forest-alerts and www.globalforestwatch.org.
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