Carte topographique Tongass National Forest

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À propos de cette carte

Nom : Carte topographique Tongass National Forest, altitude, relief.

Lieu : Tongass National Forest, Sitka, Alaska, 99835, United States (54.66209 -139.86272 59.99964 -129.99396)

Altitude moyenne : 156 m

Altitude minimum : -4 m

Altitude maximum : 4 094 m

Historically, logging operations tended to concentrate on lower-elevation, bigger-tree ecosystems for harvesting; at present, approximately 78% of the land remains intact, i.e. 383,000 acres (1,550 km2) out of 491,000 acres (1,990 km2) original big-tree, low-elevation forest area. Given the high value of these areas for wildlife species, close to 70% of this old growth forest is protected in reserves and will never be eligible for harvest.