为了进一步复杂化的问题上，几个云杉森林保护，环境问题，如削减维护斑点猫头鹰。
To further complicate the issue, several forests of spruce are protected from cutting by environmental issues such as preserving the spotted owl.
这一特点与该区广泛发育的泥炭丘地的形成密切相关，而不代表区域性云杉森林—苔原植被面貌在过去的1230年中曾有明显的改变。
The regional spruce forest-tundra vegetation of the creek has had little change since the eruption of White River ash at 1230 yr B. P.
墨西哥的森林既有温带的云杉和冷杉，也有热带雨林，其中75%以上由合作农场或原住民团体控制。
Over 75% of Mexico's forests, which range from temperate spruce and fir to tropical rainforest, are controlled by ejidos or indigenous groups.
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