n.林木线(山上等树木生长的上限)

The treeline marks the highest point where trees can grow in that particular region.
这条林线标志着在该地区树木能够生长的最高点。
As we approached the mountain, the treeline started to thin out, revealing the rocky peaks above.
当我们接近山峰时，林线逐渐稀疏，露出了上方的岩石峰顶。
The treeline was a clear indicator of the changing climate, with fewer trees growing at higher elevations.
林线清楚地表明了气候的变化，高山上的树木数量明显减少。
The treeline played a crucial role in the ecosystem, providing habitat for numerous species.
林线在这个生态系统中起着关键作用，为众多物种提供了栖息地。
In the alpine region, the treeline shifted upward due to global warming.
在阿尔卑斯山区，由于全球变暖，林线向更高处迁移。
Researchers studied the fluctuations in the treeline over several decades to understand long-term environmental changes.
研究人员研究了几十年间林线的波动，以了解长期的环境变化。
Climbers had to navigate carefully below the treeline to avoid avalanches and unstable slopes.
登山者必须谨慎地穿越林线下方，以避开雪崩和不稳定的斜坡。
The treeline was a beautiful sight during autumn, when the leaves of deciduous trees turned vibrant shades of red and gold.
秋天时的林线是一道美丽的风景，落叶乔木的叶子变为鲜明的红色和金色。
Forest fires often start below the treeline, where dry underbrush is abundant.
森林火灾通常始于林线下部，那里的枯枝落叶丰富。
The treeline served as a natural border between the forest and the tundra, a stark contrast in vegetation.
林线是森林与苔原之间的天然分界线，植被差异显著。