Yeah that is true. however the modern lumber industry is thankfully not like that anymore. also we won't be clearcutting shit like
@StudMccool is implying. and many of the forests that are highlighted have been mismanaged to the point of complete overgrowth and overcrowding of trees resulting in disasters like the fires of the last few years in California or the Wollow fire of Arizona in 2011. Frankly I'd say we over-corrected from the clear cutting of our forests to the point of preventing natural fires from culling the undergrowth and weaker saplings.
A perfect example that I'm actually familiar with would be the Pondersoa forests of Central and Northern Arizona. The primordial forests of this region that are untouched by logging and wildfire suppression had an average of 50-150 trees pee acre of land, and would look something like this.
Ver archivo adjunto 8763926
However, thanks to the VERY strict fire suppression and anti-logging policies that have been in place since the 1920s, the Ponderosa forests are SEVERELY overcrowded. with tree density approaching close to 1000 or more trees per acre alongside thick, and uncontrolled undergrowth. this is a photo from Camp Geronimo I got around six years ago showing just how overcrowded these forests are. don't mind the elk either
Ver archivo adjunto 8763942
Also as a bonus, here's the result of anti-lumber policies and fire suppression from the air, this is a single stand of ponderosa that has been blighted due to the decreased genetic diversity of trees per acre.
Ver archivo adjunto 8763932