推荐回答(2个)
目前,我知道且见过的外来入侵物种有两种,一种叫马缨丹,有些地方叫五色梅或臭草,在我们这河边、杂地、山坡上都可以看到它们。一年四季都开花,花挺好看的,就是有点臭,据说可以做药材。以前有段时间,我还想种这它,后来才知道这货是世界上十大最有害的杂草之一,原产地是美洲,在我国算外来入侵植物。马缨丹生命力强,繁殖能力也强,虫子也不吃它们,要是那时候我种了它们,说不定现在我已经被淹没在臭草堆了。

小时候在河里、小渠、稻田里随处可以看到福寿螺,那时候还不知道它们是外来入侵物种,现在想想难怪它们会繁殖这么多,毕竟在国内没有天敌。福寿螺会爬的挺高,甚至爬上一层楼,有时候把卵也产在房子外墙上。它们还会把卵产在河边石头上、水稻杆或植物枝干上,小孩子们还会把它们红色的卵砸碎。其实福寿螺的卵很好看,第一次远远的看到它们在树干上,还以为是花朵呢。 福寿螺生命力很旺盛,田螺没有水半天就死掉了,而福寿螺没有水可以撑住个把月。那时候家里养了几百只大鸭子,放学后就去捞福寿螺,然后把福寿螺砸碎喂鸭子。那时候福寿螺好多,我们这个小镇是养鸭基地,半数以上人家是鸭子养殖户,大家都会去捞一堆堆的福寿螺喂鸭子,也没见它们数量减少。后来几年,为了环保,政府开始要求减少鸭子养殖户,福寿螺就多起来了,可以说多得泛滥了。不少人家就开始吃福寿螺,没错,年少不懂事的我也吃过它们,味道马马虎虎,没有田螺好吃。

首先来说一下什么是外来物种入侵,外来物种入侵是指生物物种由原产地通过自然或人为的途径迁移到新的生态环境的过程,它有两层意思,第一,物种必须是外来、非本土的;第二,该外来物种能在当地的自然或人工生态系统中定居、自行繁殖和扩散,最终明显影响当地生态环境,损害当地生物多样性。而我国成为全球遭受外来物种入侵最严重的国家之一2014年11月最新查明中国外来入侵植物有515种。在“世界自然保护同盟”公布的全球100种最具威胁的外来物种中,中国发现50种。
但是要说近些年来中国最严重的物种入侵应该算是水葫芦吧。“水葫芦”原产于南美洲,20世纪初作为一种观赏植物引入我国,后作为猪饲料推广种植,因其大量繁殖,常常布满整个江河湖面,致使大量水生生物因缺氧和阳光不足而死亡,破坏水中生态平衡。

还有就算是福寿螺,福寿螺原于产亚马逊河流域,作为高蛋白食物最先被引入由于过度养殖,加上味道不好,它被释放到野外。可是福寿螺适应环境的生存能力很强,又繁殖得快,因此迅速扩散于河湖与田野;其食量大且食物种类繁多能破坏粮食作物、蔬菜和水生农作物的生长,而且福寿螺还带有广州管圆线虫等疾病,食用生的或加热不彻底的福寿螺后即可被感染。

再有就应该是属于小龙虾了,就是我们平常吃的小龙虾其实是一开始是被日们作为牛蛙的饲料。
因其杂食性、生长速度快、适应能力强而在当地生态环境中形成绝对的竞争优势。 其摄食范围包括水草、藻类、水生昆虫、动物尸体等,食物匮缺时亦自相残杀。小龙虾近年来在中国已经成为重要经济养殖品种。

其实除非是不好吃的好吃的对于咱们中国人来说根本算不上物种入侵
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