timberline
Longman Dictionary of Contemporary English 5++LDOCE 5++tim·ber·line /ˈtɪmbəlaɪn $ -ər-/ noun [singular] technical 1. TMHBPthe height above the level of the sea beyond which trees will not grow 林木线〔指树木能生长的最高海拔〕2. TMHBPthe northern or southern limit in the world beyond which trees will not grow 树木生长线〔指南、北半球树木能生长的最高纬度〕
Examples from the Corpus
timberline• These valleys well below timberline are dusty already, even though it is early spring.tim·ber·line nounChineseSyllable
which level above of beyond the Corpus sea the the height
timberline
tim‧ber‧line /ˈtɪmbəlaɪn $ -ər-/
noun [singular] technical
1. the height above the level of the sea beyond which trees will not grow
2. the northern or southern limit in the world beyond which trees will not grow
tim‧ber‧line /ˈtɪmbəlaɪn $ -ər-/
noun [singular] technical1. the height above the level of the sea beyond which trees will not grow
2. the northern or southern limit in the world beyond which trees will not grow