树木“用智慧”过冬

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霜叶红于二花月rn秋天的彩林是一年中绝对不应该错过的景致之一.绿的、黄的、橙的、红的和紫的……山林一改夏日单调的绿色,毫不吝啬地展现出各种各样的颜色.叶片变色不久便会彻底结束使命,掉落并在地上厚厚地堆积,仿佛为树木在冬天的休眠铺好了床.rn落叶乔木到了秋天叶片为何会变色?其实,这和光合作用有关.树木叶片中的叶绿素通过光合作用给树木制造养分,也给叶片染上了绿色.从春季到夏季,再到初秋,树木叶片会持续合成叶绿素,因此在这一过程中叶片都呈现绿色.
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