清除加拿大一枝黄花的方式有四种。一是人工铲除。在苗期或种子成熟前，剪掉花头，连根拔除植株并 清理地下根茎，集中焚烧或者无害化处理植株。二是机械防除。对大面积或农田的加拿大一枝黄花可采 取机械防除。可用镰刀或割草机割除地上部分，随后用旋耕机翻耕土地（深度10厘米以上）以清除地下 根茎。三是化学防治。在幼苗期（20厘米—50厘米）进行施药效果最好。针对农田、果园、林地、荒 地、公路铁路坡地等生境选用不同除草剂和喷施方法。彻底清理后及时种植农作物或绿化植物，占据生 态位，防止其死灰复燃。农田的加拿大一枝黄花通过连续种植两季农作物可根除；绿化带则需要加强日 常防护，发现再生植株即予清除。四是生物防治。芦苇根系发达，种植芦苇可抑制其扩散。真菌锈菌、 土生真菌能迅速感染并杀死加拿大一枝黄花。 加拿大一枝黄花原产于北美，1935年作为庭院观赏植物引入上海、南京等地栽植，上世纪80年代扩散至 河滩、荒地、路边及部分农田，成为中国一种常见的恶性杂草。它入侵我国很多省（自治区、直辖 市），严重危害本土植物的生存，2023年1月被列入《重点管理外来入侵物种名录》，成为重点管理的 重大农林入侵物种，当前仍在不断蔓延。加拿大一枝黄花颜 ...

掌握科学的识别方法，是及时防控的关键。根据农业农村部生态总站发布的《加拿大一枝黄花防控 技术指导意见》，加拿大一枝黄花为多年生草本，株高0.3—2.5米，茎直立且上部常带短柔毛，茎干后 期会木质化呈棕色或青色。叶片互生，多为披针形或线状披针形，长5—15厘米，边缘具锯齿或波状钝 齿，具离基三出脉。其最典型特征是顶生圆锥花序，分枝呈蝎尾状，瘦果褐色带白色冠毛。需注意其与 本土一枝黄花的区别，后者根系较弱，不会形成单一优势群落。 目前，我国已将加拿大一枝黄花列入《重点管理外来入侵物种名录》，农业农村部等部门已发布防 控指导意见，多地也开展了集中清除行动。刘万学呼吁，防控外来入侵物种需全民参与，公众提高警 惕、及时上报，才能筑牢生态安全防线。早发现、早处置是遏制其扩散的关键，切勿因一时大意，让外 来入侵物种进一步侵蚀本土生态家园。 更令人棘手的是，它还能通过地下长根状茎无性繁殖，即便只残留部分根茎，也能重新萌发，形 成"今年一小丛，明年一大片"的爆发式扩散态势。在破坏力方面，刘万学用"一花开而百花杀"形容其本 性。它植株高大，最高可达2.5米，能优先抢占阳光和空间；根系极其发达，可疯狂掠夺土壤中的水分 与养分。 " ...

上海市浦东新区属地林长制办公室巡查员胡志鹏表示，不及时铲除的话，它这些茎干会木质化，会争夺其他植物的生长条件，争夺水分和阳光，而且它的根 系比较发达，它会让土地板结得更快，因为它把水分都吸收完之后，土地已经干了。它如果数量多起来，会有一种酸性物质，在土壤里面扩散开来，使土地 的酸碱度变成酸性。 据了解，"加拿大一枝黄花"花果期为7—11月，具有极强的繁殖力和适应性，可生长于山坡、林地、沼泽等多种环境，常见于城乡荒地、河岸及交通沿线。 其花粉量大，易引发过敏反应，严重者可能出现荨麻疹等症状。专家提醒，发现该植物时切勿徒手接触，以免引发花粉过敏等不良反应。 "加拿大一枝黄花"破坏土壤 发现要及时上报 经历了将近一天的清理，现场大约20亩"加拿大一枝黄花"基本被清理干净，由于这种植物破坏能力极强，野外遇到建议及时上报属地部门。 近日，有上海市民在一块闲置的荒地上，发现了一片黄色小花，生长迅速，经属地工作人员确认，这是一种外来入侵物种，名叫"加拿大一枝黄花"。 "加拿大一枝黄花"上金黄色的部分是快要枯萎的花朵，顶端白色绒毛部分是它的种子，一株植株就能释放2万多颗种子，传播能力极强，所到之处可谓是寸 草不生。"加拿大一 ...

Core Viewpoint - The sale of "wild turtles" in various locations has raised concerns, as these turtles are primarily identified as Florida softshell turtles, an invasive species that poses ecological threats and is unsuitable for consumption or release into the wild [1][4][19] Group 1: Identification and Characteristics of Florida Softshell Turtle - Florida softshell turtles, also known as pearl turtles, have a smooth, oval shape, medium-sized head, and robust limbs with webbed feet [5] - They are native to the United States and primarily feed on soft-bodied animals, crustaceans, and fish, exhibiting rapid growth and strong adaptability [7] Group 2: Ecological Impact - Upon being released into Chinese waters, Florida softshell turtles can aggressively compete for territory, threatening native turtle populations and overall biodiversity, earning them the title of "freshwater tyrants" [8] - The article highlights other invasive species that pose similar ecological risks, such as Canadian goldenrod, smooth cordgrass, and apple snails, which disrupt local ecosystems and agricultural practices [9][11][13][14][15] Group 3: Recommendations and Actions - The article emphasizes that releasing animals into the wild does not equate to doing good; instead, it can have detrimental effects on ecosystems [17] - It advises the public to report the sale of such animals and to engage in responsible wildlife management practices, including only releasing native species and supporting conservation efforts [17][19]

Group 1 - The popularity of "exotic pets" in China is rising, with over 17 million people reportedly keeping them, which includes non-traditional animals like snakes, lizards, and spiders [1] - There are significant safety concerns associated with the ownership and importation of exotic pets, particularly regarding the potential ecological impact of invasive species [7][21] - Illegal importation of exotic species is occurring, with recent incidents involving travelers attempting to smuggle various foreign animals into the country [3][8] Group 2 - The introduction of foreign species can lead to severe ecological consequences, including threats to native species and agricultural production [19][23] - Specific examples of harmful invasive species include the "Canadian goldenrod" and "muti-flowered cordgrass," which have shown strong reproductive capabilities and can outcompete native flora [28][31] - The Chinese government is taking measures to combat the spread of invasive species, including a national survey every ten years and the implementation of control plans for specific invasive plants [33]