Chlorophyll in the leaves is the tree`s main means of producing nutrients during the summer. But with autumn comes the destruction of chlorophyll. This demise of the green pigments allows other, previously masked colors to come forward.
Those unmasked fall colors quickly become markers for individual deciduous tree species.
The two other pigments present in leaves are
Carotenoid -produces yellow, orange, and brown.
Anthocyanin - produces red. Low temperatures, but above freezing, are good for reds in maples, but an early frost can hurt a bright red color.
圖片編號:
199853742
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Mccrainemercantile
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標準授權 | 363 x 480 px | JPG | 13 點 |
標準授權 | 605 x 800 px | JPG | 15 點 |
標準授權 | 1505 x 1992 px | JPG | 18 點 |
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進階授權 | 3830 x 5067 px | JPG | 88 點 |
進階授權 | 3830 x 5067 px | JPG | 88 點 |