2026年4月13日 · The best lodgepole pine races are faster-growing than the local spruces and larch planted in the same area; but again, only time will tell if the advantage will remain with the pine. Why …

2021年6月18日 · The two-acre exotic tree plantation is part of a much-larger “boreal arboretum” on the UAF campus, which mostly consists of native spruce, birch, aspen, poplar and willow trees. Having …

2026年4月13日 · I eventually found a tree with a spiral lightning mark and it followed the spiral grain exactly. One tree, of course, proves nothing. "But why should the tree spiral? More speculation here: …

2026年3月19日 · One of many Christmas pleasures is the aroma of a freshly cut tree. Both spruce and pine have it. So do cranberry fields in the morning, orange peelings, and some paint thinners.

2021年8月12日 · Ben Gaglioti takes a core from a tree in the farthest-north grove of lodgepole pines in Alaska, near the town of Yakutat. Photo by Ned Rozell.

5 天之前 · Black spruce, unlike some other trees, tend to produce seed annually or nearly annually. They start bearing cones at about age 15. Once black spruce seed cones mature, they may remain …

1993年4月1日 · Back on the ground, I did a little research on why so few tree types grow naturally in the neighborhood. Winter's extreme cold easily eliminates some tree species hardy elsewhere. Oak, ash, …

5 天之前 · Newcomers to Alaska will frequently order young pine, fruit or maple trees from their home state in the lower 48. They enthusiastically proclaim that the trees should do well here because the …

2026年4月3日 · If the growth rings of a living bristlecone pine can be overlapped with dead pines even older, a complete chronology extending as far back as 8,000 years can be obtained. But, as …

2002年1月30日 · They dated the pine stump to about 12,200 years ago. The Canadians' discovery of the stone tool and the ancient pine tree off the Queen Charlotte Islands strengthens the notion that …