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为什么常绿的树叶在秋天也不变色
更新时间: 2020-10-09 00:00:00  

因为叶子里有叶绿素和叶黄素,在温度的变化下,叶绿素很不稳定,而叶黄素相对稳定得多,其它颜色的叶子也是这个道理。而有些植物会四季长青,是因为随着地域的变化,部分叶子进化和改变了叶子结构,能很好的保住水分和不惧气温的变化,比如松树。

关键词: 为什么 树叶 秋天 变色

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