Canaan fir (Abies balsamea var. phanerolepis) originated in the Canaan Valley of West Virginia. It has become a popular Christmas tree due to its attractive appearance.

The oleoresin secreted by grand fir (Abies grandis) is composed of resin acids derived largely from the abietane family of diterpene olefins as precursors which undergo subsequent oxidation of the C18 ...

在全球气候变化背景下，森林作为重要的碳汇在减缓温室气体排放中扮演关键角色。然而，不同采伐方式对森林生态系统碳库的长期影响仍存在诸多争议，特别是全树采伐 (Whole-Tree Harvest, WTH)与仅干采伐 (Stem-Only Harvest, SOH)的碳动态差异。美国缅因州北部的红云杉 (Picea rubens)-香脂冷杉 (Abies balsamea)林 ...

这篇综述揭示了加拿大 boreal 地区湖泊通过温度缓冲作用（thermal refugia）延缓森林群落转型的机制，重点量化了11个湖泊的形态特征（如面积、深度、体积）对夏季（7月）和冰消期温度异常的影响。研究发现，大型深水湖泊（如苏必利尔湖）可通过冷风上涌（upwelling）使下风岸10公里内降温达2.9°C ...

The Alberta government is responsible for managing provincial Crown forest lands within the Green Area. As part of that responsibility, forest managers assess the growth rate of forests. To assist in ...