lossyearYear of gross forest cover loss event. Forest loss during the study period, defined as a stand-replacement disturbance, or a change from a forest to non-forest state. Encoded as either 0 (no loss) or else a value in the range 1–20, representing loss detected primarily in the y...
Quantification of global forest change has been lacking despite the recognized importance of forest ecosystem services. In this study, Earth observation satellite data were used to map global forest loss (2.3 million square kilometers) and gain (0.8 million square kilometers) from 2000 t...
“High-Resolution Global Maps of 21st-Century Forest Cover Change.” Science 342 (15 November): 850–53. Data available on-line at: Global Forest Change. 代码: var dataset = ee.Image('UMD/hansen/global_forest_change_2020_v1_8'); var treeCoverVisParam = { bands: ['tree...
Year of gross forest cover loss event. Forest loss during the study period, defined as a stand-replacement disturbance, or a change from a forest to non-forest state. Encoded as either 0 (no loss) or else a value in the range 1–20, representing loss detected primarily in the year 2001...
Consistent across epochs, the overall accuracy of the static forest-cover layers was 91%, and the overall accuracy of forest-cover change was > 88% —among the highest accuracies reported for recent global forest- and land-cover data products. Both commission error (CE) and omission error (...
Historical baselines of forest cover are needed to understand the causes and consequences of recent changes and to assess the effectiveness of land-use policies. However, historical assessment of the global distribution of forest cover and change has been lacking due to obstacles in image acquisition...
Historical record of forest cover and forest cover change is important to account carbon emission as well as for modeling of global-scale climate change and its interaction with ecosystem. The earth observation data is one of few viable sources of historical forest cover change estimation. However,...
thetypesofforestsandintheirchar- acteristicsandrelativehealth,therates ofdeforestationandnetchangedonot conveythefullpictureofthechanges occurringtoforestsovertime.Anet changeinforestareamayhidethefact thatnaturalforestsarebeingdeforested inonepartofacountryorregionwhile forestplantationsarebeingestablished inanother...
(EDupPDupMPAdown) accounted for more than half of the world’s relevant forest landscapes, which indicated that edge, isolation, and patch size effects changed synergistically with forest cover change for most global forest landscapes. However, we also found some atypical FFI change modes. For ...
C. et al. High-resolution global maps of 21st-century forest cover change. Science 342, 850–853 (2013). Article CAS Google Scholar World Database on Protected Areas User Manual (UNEP, 2016); https://www.protectedplanet.net/en/resources/wdpa-manual Curtis, P. G., Slay, C. M., ...