Definition of treeline in English:



  • 1(on a mountain) the line or altitude above which no trees grow.

    • ‘The Mesolithic hunters may have carried the firewood from lower slopes up to the campsite, which today stands far above the treeline.’
    • ‘Going above treeline requires special care, as conditions are harsher and more unpredictable.’
    • ‘Temperate rain forests are common at lower altitudes, but high altitudes lead to stunted trees, and eventually no trees at all above the treeline.’
    • ‘The three areas have over two dozen ski lifts, mostly chairlifts and gondolas, serving a multitude of trails and runs from the valley floor to open slopes above treeline.’
    • ‘To really appreciate the area, hike above the treeline on a mountain slope where you can see sagebrush and several other alpine flowers.’
    • ‘The treeline of the valley dipped down to almost the back door of the sanctuary and cut off what little grey light had guided her and Beckett there.’
    • ‘I watched a buck with an impressive rack stalking through the snow at the treeline across the garden, hesitate with one hoof raised, then bound away until it was lost among the trees and frozen white mist blowing in from the lake.’
    • ‘Below the treeline, the White Mountains in winter are a vision of heaven.’
    • ‘After two hours' rock hopping the forest starts to yield to scrub and eventually meadow as we emerge above the treeline.’
    • ‘Of these, the most spectacular was Timberline, a long winding trail (blue level) starting at the very top of the mountain, above the treeline.’
    • ‘In the intermountain region of the Rockies there are two treelines: one high, where the advance of trees is limited by cold and snow, and one low, where trees are halted by the lack of water.’
    • ‘From there, your party will don crampons and climbing helmets, strap skis to packs, and climb another 4.4 miles above treeline.’
    • ‘The new face of cannabis trade is that the richer villagers employ Nepali labourers to sow the cannabis crop in the pastures above the treeline.’
    • ‘Just above the treeline we found our real estate, a small level dish on a ridge featuring million dollar views.’
    • ‘Further in the distance, the jagged caps of the mountains rose above the treeline - majestic peaks erected to a cloud-streaked sky.’
    • ‘It takes me nearly two hours to hike to stunning views above treeline.’
    • ‘The route passed near dozens of near - 14,000-foot peaks, several 14,000-foot peaks, and was almost all above treeline.’
    • ‘As elevation increases, trees become stunted and above the treeline only shrubs, moss, lichen and herbs are found.’
    • ‘Starting in the Thimphu, the capital city of Bhutan, they will climb upwards, leaving villages behind and emerging above the treeline to high pastures surrounded by icy peaks on Bhutan's frontier with Tibet.’
    • ‘After six hours climbing we crossed the treeline, passing over a saddle of rock onto a desolate plain of scree: a great expanse of sharp, broken stones, ground up, crushed, then left scattered by the retreating glacier.’
    1. 1.1 (in high northern (or southern) latitudes) the line north (or south) of which no trees grow.
      • ‘As shown in Fig.1, the northern limit for boreal forest proper deviates to the south of the treeline for individual stands of trees.’
      • ‘In association with recent regional warming, moist tundra has become more shrubby, and trees are increasing in density and expanding into tundra near the arctic treeline.’
      • ‘Theoretically, this zone was a tundra region which extended as far south as the treeline.’
      • ‘They nest above the treeline, and when they leave the tundra, they find similar treeless habitat in prairies, agricultural areas, and coastal dunes.’
      • ‘Periglacial environments occur not only in high latitudes and in tundra regions, as defined by Lozinzki, but also below the treeline.’
      • ‘North America's treeline is higher than Europe's, which means you can ski shin-deep while a storm is blowing, because trees provide a colour-contrast that enhances visibility.’