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That's well more than the 115-140 degrees that signal the moment when serotinous seeds can be freed.
這遠遠高于華氏115-140度，即晚熟球果種子能被釋放的所需溫度。
At those temperatures, the cones burst open, releasing millions of seeds,
達到那些溫度時，球果裂開釋放出數以百萬的種子
which are carried by the hot air to form new forests.
種子隨熱空氣而飄散，形成新的森林。
After the fire, carbon-rich soils and an open sunlit landscape help lodgepole seeds germinate quickly and sprout in abundance.
大火之后，富含碳的泥土及空曠多陽的地形促使滿地的美國黑松種子迅速發芽生長。
From the death of the old forest comes the birth of the new.
老森林的死亡帶來新森林的誕生。
Fires are also important for the wider ecosystem as a whole.
火對于整個更廣泛的生態系統也很重要。
Without wildfires to rejuvenate trees, key forest species would disappear,
沒有森林大火來更新樹木，主要樹木品種便會消失
and so would the many creatures that depend on them.
很多依靠這些樹木的生物亦會消失。
And if a fire-dependent forest goes too long without burning, that raises the risk of a catastrophic blaze,
而如果一個依賴火的森林太久沒有被燃燒會提高災難性大火的風險火災
which could destroy a forest completely, not to mention people's homes and lives.
足以燒毀整個森林更不要說人類的居所和生命。
That's why forest rangers sometimes intentionally start controlled burns
這正是為何森林管理員有時故意進行可控制的火燒
to reduce fuels in order to keep the more dangerous wildfires at bay.
藉此減少可燃物，避免更危險的森林大火。
They may be frightening and destructive forces of nature,
森林大火或許是駭人的自然破壞
but wildfires are also vital to the existence of healthy boreal forest ecosystems.
但它們對于維持北方針葉林的健康生態系統必不可少
By coming to terms with that, we can protect ourselves from their more damaging effects while enabling the forests,
接受這樣的事實我們可保護自己，免于它們進一步的傷害同時讓森林
like the legendary phoenix, to rise reborn from their own ashes.
如同傳說中的鳳凰從自身的灰燼中，浴火重生。
