Northern Tree Habitats - Geophysical Institute
2024年12月19日 · However, after seven growing seasons in Fairbanks, trees from the most northern homelands of the Dezadeash, Carmacks and Mayo areas of the Yukon are among the tallest, and the early starters from the south are now ranked at the bottom; although some of the trees from the Ft. Nelson area of British Columbia have maintained their relatively fast ...
Visit to an exotic tree plantation in Alaska
2021年6月18日 · These exotic trees — some now 70 feet tall — are a nice legacy for the men who planted shin-high seedlings years before Woodward last visited the plot in 1981. Les Viereck, a renowned ecologist who wrote Alaska Trees and Shrubs, died in 2008.
The majesty and mystery of Alaska yellow cedar
2024年12月12日 · Here, in a forest a few hundred feet above a shrinking glacier, Gaglioti is felling one of the most enigmatic trees in Alaska: an Alaska yellow cedar. These trees, which can live longer than 1,000 years, grow on the rainy coast from the Oregon/California border through British Columbia and as far north as Prince William Sound.
Why Lower 48 Fruit Trees Don't Do Well in Alaska
2024年10月17日 · The trees do just fine back there, they say. But too often, they find that after a winter or two, their trees have died in Alaska. Professor L.J. Klebesadel, writing in Agroborealis, a publication of the University of Alaska's Agricultural and Forestry Experiment Station, tells why the efforts of the would-be transplanters often fail.
The Days of the Shade Trees in Alaska | Geophysical Institute
1998年8月26日 · Interior Alaska is tough on trees. Transplanted trees from the Lower 48 give up quickly when exposed to the Interior's long, cold winter. There was a time, though, when elm trees grew in Eagle, basswoods thrived in Tok and hickories sprouted in Fairbanks.
Orange trees in the Alaska Range | Geophysical Institute
2020年9月3日 · Hennon wrote that the damage to trees is mostly cosmetic, and Alaska foresters have noticed that outbreaks rarely last more than a few years. × Spores of the spruce needle rust fungus on needles of white spruce trees growing off Alaska’s Denali Highway.
The largest black spruce in Alaska | Geophysical Institute
2024年12月19日 · The tallest trees are not always the winners of The Big Tree Challenge; foresters score trees on height, circumference and the spread of a tree’s crown. The black spruce on the UAF campus is taller than the state record western paper birch, a 67-footer near Haines, and Alaska’s tallest balsam poplar, a 60-foot tree on the Kuskokwim River.
Tree line changes on the Kenai Peninsula | Geophysical Institute
2008年2月6日 · The changes in Kenai Peninsula trees might be due to the milder weather the peninsula, along with most of Alaska, has experienced since about 1977, when ocean-surface temperatures in the North Pacific warmed. Climatologists with the Alaska Climate Research Center report that the Homer area warmed 4.2 degrees Fahrenheit on average from 1949 to …
Alaska forests in transition | Geophysical Institute
2012年12月7日 · “Lower elevation (trees) are hurting, mid-elevation trees are tracking the change and high elevations are taking off,” Wiles said. “All of a sudden, conditions are right for (the higher trees).” Alaska rainforest mountain hemlocks seem to be experiencing the same “biome shift” Juday described in Alaska’s boreal forest, Wiles said.
Black Spruce - Geophysical Institute
2024年12月12日 · Black spruce are the climax trees on cold, poorly drained soils in Alaska and Yukon. They rarely exceed 45 feet (15 meters) in height or 9 inches (23 centimeters) in diameter. In a typical stand, the diameter of most trees is less than 5 inches, and growth is very slow. Half the trees in a 30-year-old stand may be less that 2 inches in diameter.