单词 | timberline |
释义 | timberlinen. 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). < n.1867 |
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