Temperate-forest fires burn hot and fast, and sometimes all the way up to the crown of a tree.
温带林地火灾火焰干烈、蔓延迅速，有时会一直沿着树干烧至树冠。
2
The leach of crown layer is one of the functions of forest in regulating rainfall and also an important. Way of material circulation in forest ecosystem.
冠层淋溶是森林调节降水的功能之一，是森林生态系统物质循环的重要渠道。
3
Tree crown form and canopy structure of the tussah-feeding oak forest are important influencing the photo-productivity of the stands.