![timberline造句怎么写]( "timberline造句怎么写")
- Theuppertimberline,likethesnowline,ishighestinthetropicandlowestinthepolarregions.Thispaperbrieflyoutlinedtheadvanceofdendroecologyresearchintermsofforestdisturbance,populationdynamics,foreststructure,forestregenerationpatternsandalpinetimberline....
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