45sB3XTyo6e tech.huanqiu.comgallery地衣:岩石上开了6亿年的“花朵”/e3pmh164r/e3pn6fo081638752080186环球网版权作品,未经书面授权,严禁转载或镜像,违者将被追究法律责任。责编:黎晓珊环球网163875208018611[]{"audio":{"members":[]},"gallery":{"members":[{"desc":"地衣是真菌和某些单细胞藻类形成的相互依存的共生体,真菌从环境中吸收水分和无机盐供给藻类,藻类进行光合作用制造的有机物供给真菌,地衣能够在裸露的岩石表面生长。 图文源自IC","height":2752,"id":"f0b0f213c0ce6c198d8e24d69392869eu5","mime":"image\/jpeg","size":1.11,"url":"//img.huanqiucdn.cn/dp/api/files\/imageDir\/f0b0f213c0ce6c198d8e24d69392869eu5.jpg","width":4128},{"desc":"从形态上看,地衣分为壳状地衣、叶状地衣和枝状地衣,以红、黄、绿、灰等各种颜色构成不同的图案。地衣具有很强的生命力,耐干旱、耐贫瘠.能分泌有机酸腐蚀坚硬的岩石表面,再加上自然风化作用,坚硬的岩石表面会出现许多小颗粒,最终形成土壤,当土壤积累到足够多时,就可以为其它高等植物扎根及生长创造条件。图文源自IC","height":2752,"id":"de7c0ee2a6e9cbe3c73e7512b95d94a6u5","mime":"image\/jpeg","size":1.06,"url":"//img.huanqiucdn.cn/dp/api/files\/imageDir\/de7c0ee2a6e9cbe3c73e7512b95d94a6u5.jpg","width":4128},{"desc":"因此,地衣常被称为“植物拓荒者”或“先锋植物”。 参考地球生命史,地衣的出现,仅次于最早出现在海洋里的藻类。地衣在6亿年前最早登上陆地,并对陆生环境进行了一次彻头彻尾的改造,之后陆地上才出现了苔藓、蕨类、孢子植物等。图文源自IC","height":2752,"id":"de887c5070430fb078a1e1f5cceb7482u5","mime":"image\/jpeg","size":1.65,"url":"//img.huanqiucdn.cn/dp/api/files\/imageDir\/de887c5070430fb078a1e1f5cceb7482u5.jpg","width":4128},{"desc":"目前,全球已知地衣约2万种,我国已知3041种。图文源自IC","height":2752,"id":"89ef5a0c121e0f0e431dba80b700ed87u5","mime":"image\/jpeg","size":1.69,"url":"//img.huanqiucdn.cn/dp/api/files\/imageDir\/89ef5a0c121e0f0e431dba80b700ed87u5.jpg","width":4128}]},"video":{"members":[]}}//img.huanqiucdn.cn/dp/api/files/imageDir/f0b0f213c0ce6c198d8e24d69392869eu5.jpg