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单词 timberline
释义

timberlinen.

Forms: Also timber line, timber-line.
Etymology: timber n.1Previous versions of the OED give the stress as: ˈtimberline.
Chiefly North American.
1. On a mountain, the line or level above which no trees grow. Frequently with omission of the. Also attributive.
ΘΚΠ
the world > plants > by growth or development > defined by habit > tree or woody plant > characterized by age or life cycle > [noun] > young tree or sapling
spire1392
sapling1415
springa1450
sipling1513
spear1543
gelding1562
saple1589
tiller1664
treeling1847
timberline1867
treelet1874
pole1882
the world > the earth > land > landscape > high land > mountain > [noun] > range > tree-limit
timber-limit1854
timberline1867
tree-line1893
tree-limit1934
the world > the earth > land > landscape > high land > mountain > [adjective] > relating to tree-limit
timberline1936
1867 Harper's Mag. June 17/2 A high mountain ridge divided into innumerable peaks, all of which tower above the timber-line.
1874 E. Coues Birds Northwest 272 The flowers growing far above timber-line of Mount Lincoln.
1904 Bull. Geol. Soc. Amer. 14 557 On the mountains of central Idaho, the cold timberline is sharply drawn at an elevation of about 10,000 feet, while the dry timberline, equally well defined, has an elevation of about 7,000 feet.
1936 Scrutiny 4 443 Timber-line settlers.
1961 R. M. Patterson Buffalo Head ii. 40 ‘The timberline country I would learn to call it in the years to come.
1966 Encycl. N.Z. I. 730/1 Upper timber-line belts are largely composed of broadleaf shrubs.
1980 Outdoor Life (U.S.) Oct. (Northeast ed.) 100/2 Hunters working from 8,000-feet to timberline.
2. In the northern hemisphere, the line north of which no trees grow.
ΘΚΠ
the world > the earth > region of the earth > zone or belt > [noun] > biogeographical zone > boundary
Wallace line1868
continental divide1869
timberline1896
tree-limit1934
1896 C. Whitney On Snow-shoes to Barren Grounds 287 How well I remember that birch-tree! And how delighted I was, for I knew by that sign the timber-line was very close.
1934 P. H. Godsell Arctic Trader 288 We had a warm camp that night, as we were still within the timber line.
1977 A. Hallam Planet Earth 88 In practice we find that the zone of continuous permafrost is limited to those areas where the mean annual temperature is −15°C..and this also roughly coincides with the timber~line, the northernmost point where trees exist.
This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2021).
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