At a smaller scale, but nevertheless subject to continuing debate, is the stripping of whole tracts of woodlands in temperate and boreal forests to provide lumber and paper pulp. Loss of the redwoods in the western U.S. coastal forests is a typical situation. While current laws require reforestation of most such lands, the rate of regrowth in some regions is not keeping pace with removal. The first two cover an area near Port Renfro on Vancouver Island in British Columbia, in part of the Pacific Coastal Ranges with fir, spruce, and some deciduous trees. Clearcutting of the mixed forest in the year or so up to 1991 is in pink.
Mature vegetation is darker green and regenerated forest appears in light green.
Another way to carry out this change detection is to use a band from one year and two bands from the other year in making the color composite. Once again, mature forest is rendered in dark green and reforested land in light green but here pink denotes areas that were recently deforested in 1984 and blue refers to areas that were clearcut between 1984 and 1991 but have yet to make a strong recovery. We shift now to part of the boreal forestlands that are widespread on the Canadian Shield. The Riviere de Rupert and associated water offshoots appear in black. Try to pick out the power line running to the north.