寧夏外來人侵菊科植物種類與分布現(xiàn)狀

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中圖分類號：Q948.2 文獻標志碼：A 文章編號：1003-935X（2025）02-0025-06

Specie and Distribution Characteristic of Alien Invasive Asteraceae Plants in Ningxia

SHI Yunyun1，DU Wei1，YU Xianping1，JING Zhizhong2，JIANG Xudong'，LI Zongze 1 （204號 LUZhanjun1，CHENCaifang1，LIU Yuan’，LI Zhen1 （1.Ningxia Hui Autonomous Region Agricultural Technology Extension Station，Yinchuan 75ooo1，China; 2.Ningxia Jingyuan County Agricultural Technology Extension Service Center，Jingyuan 75640o，China）

Abstract：Inorder toclarifythecurrent situationof alien invasive Asteraceae plants inNingxia and provideabasis for prevention andcontrol of local alien invasiveplants，biodiversityprotectionand ecological securitymanagement，a 2022-2023 field survey，along with literatureand database research，was conducted.Thisstudy found 25alien invasive species across 2O genera，comprising 4 life forms-mostly annual herbs（ 48% ）. Five species were malignantly invasive，fourseriously，onelocally，sixgenerall，andnineunderobservation.MostoriginatedfromNorthAmerica （ 56% ），followed byEurope，with Africa the least（ 16% and 8% ，respectively）.Intentional introductions accounted for 60% （15 species），and unintentional 40% （10 species）．Species were more prevalent in southern Ningxia.In conclusion，intentionalintroductionsarea majorconcern，withharm increasing.Monitoringandcontrol eforts should focus on southern Ningxia and North American species. KeyWords：alien invasion;Asteraceae plant;life form;degree of harm;distribution area

外來入侵植物指植物不但在原產(chǎn)地以外能夠建立自我維持的種群，而且對人侵地的經(jīng)濟、生態(tài)造成一定威脅，具有侵略擴張性。（剩余5797字）