2025年1月23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 ...

2025年1月23日 · The Klukwan giant holds the national record for black cottonwood diameter. Its nearest rival, a tree near Salem, Oregon, does hold the national height record. The Klukwan giant belies the belief that trees tend to get smaller the farther north one goes. Both balsam poplar and cottonwood have value for fuel wood, pulp and lumber.

2025年1月23日 · Granted, not all trees exhibit the same twist, but the majority of them do. The phenomenon can be likened to the claim that water will always spiral out of a drain in a counter-clockwise direction in the northern hemisphere. It is well known that you can make it spiral out in either direction, if you give it a little shove first.

2025年1月30日 · Spruce trees planted on the islands by the Russians in 1805 are doing just fine and reseeding themselves naturally, although the total tree population hardly amounts to a forest. In recent years, trees have been planted at military bases along the chain, and the State is now shipping out seedlings for reforestation projects all over Alaska.

2025年1月23日 · One wishing to learn more about willows can obtain Alaska Trees and Shrubs, authored by Leslie A. Viereck and Elbert L. Little, Jr., and published as Agriculture Handbook No. 410 by the Forest Service, United States Department of Agriculture.

2025年1月30日 · Gregory and Wilson found that trees in both areas formed the same number of tracheids but that the white spruce in Alaska produced most of these cells in about one-half as much time as it took the trees in Massachusetts. In other words, the cambium in Alaskan trees was producing tracheids at a rate twice that of the Massachusetts trees.

2025年1月30日 · Witches' broom on spruce trees is caused by a rust disease (a kind of fungus disease). The rust lives on the spruce tree throughout the year. Each spring, small yellow pustules appear on the new needles of the broom. A strong sweet odor, which is easily recognizable, usually accompanies the maturation of these pustules.

2025年1月23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 …

2023年5月25日 · The range of the feltleaf willow, probably the most numerous tree in Alaska. From Alaska Trees and Shrubs by Les Viereck and Elbert L. Little, Jr.

2025年1月30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.