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NATIONAL PARK SERVICE Forests and Trees of the National Park System |
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 SERENE FORESTS OF PINE AND ASPEN BEDECK THE NORTH RIM, GRAND CANYON NATIONAL PARK, ARIZ. IN AUTUMN, THE BRIGHT GREEN OF THE ASPEN LEAVES TURNS TO GOLDEN YELLOW; ITS COLOR GLORIFIES MOUNTAIN SLOPES ALL OVER THE SOUTHWEST. |
 PAPER BIRCH, IN CENTER, AND SPRUCE, AT LEFT, FRAME A VIEW OF THE SHORES OF BELLE ISLE, ISLE ROYALE NATIONAL PARK, MICH., WITH ITS FOREST OF MIXED CONIFERS AND HARDWOODS. |
 MOUNTAIN-LAUREL AND DENSE FOREST LEND BEAUTY TO THIS SWIFT-RUNNING STREAM IN GREAT SMOKY MOUNTAINS NATIONAL PARK, TENN.—N. C. |
 PORCUPINES HAVE BEEN KNOWN TO KILL OFF EXTENSIVE STANDS OF YOUNG FOREST. THIS PINYON, IN MESA VERDE NATIONAL PARK, COLO., SHOWS THE NATURE OF PORCUPINE DAMAGE. |
 LOOKING TOWARD MOUNT OLYMPUS, OLYMPIC NATIONAL PARK, WASH., WITH TYPICAL FOREST CARPETING OF THE LOWER ELEVATIONS. |
 THESE PONDEROSA PINS IN SEQUOIA NATIONAL PARK ARE BARK-BEETLE VICTIMS. FOR CONTROL, INFESTED TREES ARE FELLED, AND THE BARK PEELED AND BURNED TO DESTROY THE INSECTS. CONTROL OF INJURIOUS INSECTS IS A NEVER-ENDING BATTLE. |
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Last Modified: Fri, Feb 9 2007 10:00:00 pm PST |