Results from time-series analysis of Landsat images characterizing forest extent and change.
Trees are defined as vegetation taller than 5m in height and are expressed as a percentage per output grid cell as ‘2000 Percent Tree Cover’. ‘Forest Cover Loss’ is defined as a stand-replacement disturbance, or a change from a forest to non-forest state, during the period 2000–2015. ‘Forest Cover Gain’ is defined as the inverse of loss, or a non-forest to forest change entirely within the period 2000–2012. ‘Forest Loss Year’ is a disaggregation of total ‘Forest Loss’ to annual time scales. Reference 2000 and 2014 imagery are median observations from a set of quality assessment-passed growing season observations.
M. C. Hansen, P. V. Potapov, R. Moore, M. Hancher, S. A. Turubanova, A. Tyukavina, D. Thau, S. V. Stehman, S. J. Goetz, T. R. Loveland, A. Kommareddy, A. Egorov, L. Chini, C. O. Justice, J. R. G. Townshend , High-Resolution Global Maps of 21st-Century Forest Cover Change, Science, 15 Nov 2013 : 850-853 ,Landsat data reveals details of forest losses and gains across the globe on an annual basis from 2000 to 2012, https://doi.org/10.1126/science.1244693
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