| 2019—2023年草地贪夜蛾在中国的迁移规律及其对台风的响应 |
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| 引用本文：钱刘兵,陆恩泽,刘杰,吴秋琳.2019—2023年草地贪夜蛾在中国的迁移规律及其对台风的响应.植物保护学报,2025,52(6):1503-1515 |
| DOI：10.13802/j.cnki.zwbhxb.2025.2025067 |
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| 中文摘要:为中国草地贪夜蛾Spodoptera frugiperda的精细化监测预警、防控提供科学支撑，基于全国2019—2023年草地贪夜蛾成虫种群首次发现监测数据和同期台风记录资料，利用统计分析、地理信息系统等技术手段明确台风影响下草地贪夜蛾在中国的迁移方向、距离和规模，定量化解析草地贪夜蛾在中国的迁移规律。结果显示：1—3月草地贪夜蛾主要分布在华南北部及西南南部；4月下旬中国东部种群开始北侵，而西部种群迁移路线相对滞后；5—6月东部草地贪夜蛾主降区在长江中下游平原，西部种群则集中于四川—贵州一带；7月下旬东部种群迁移路线推进至华北地区，同时西部种群继续北进且最远可达内蒙古自治区中南部；8月中旬东部草地贪夜蛾开始陆续向南回迁，西部种群则延迟约半个月。2019—2023年，草地贪夜蛾在中国以北向迁移为主，而台风活动不仅可造成其迁飞方向更加集中，还可使其发生明显转向。在非台风期，草地贪夜蛾在中国东部的迁移距离显著大于西部；台风影响下西部种群的迁移距离明显增加，从而缩小了东、西部种群迁移距离差异。此外，2020—2023年中国草地贪夜蛾始见期虫量逐年递减，但东部始见期虫量总体大于西部，且台风期始见期虫量显著大于非台风期。表明通过5年的入侵进程，草地贪夜蛾在中国已形成了东、西两线并进、春夏北迁秋季南回的迁移规律，并且其迁移方向、距离和规模均受到台风的显著影响。 |
| 中文关键词:草地贪夜蛾 入侵 迁移格局 中国 台风 |
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| Migration patterns of fall armyworm Spodoptera frugiperda in China and its responses to typhoons from 2019 to 2023 |
| Author Name | Affiliation | E-mail | | Qian Liubing | School of Ecology and Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, Jiangsu Province, China
Jiangsu Provincial University Key Laboratory of Agricultural and Ecological Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, Jiangsu Province, China | | | Lu Enze | School of Ecology and Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, Jiangsu Province, China | | | Liu Jie | National Agro-Tech Extension and Service Center, Beijing 100125, China | | | Wu Qiulin | School of Ecology and Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, Jiangsu Province, China
Jiangsu Provincial University Key Laboratory of Agricultural and Ecological Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, Jiangsu Province, China | wuqiulin@nuist.edu.cn |
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| Abstract:To provide scientific support for the refined monitoring, early warning, and management of the fall armyworm Spodoptera frugiperda in China, this study integrated nationwide first-detection data of S. frugiperda moths from 2019 to 2023 with concurrent typhoon records. Using statistical analyses, geographic information systems, and related techniques, we clarified the migration direction, distance and population scale of S. frugiperda under typhoon influence, and quantitatively elucidated its migration patterns across China. The results showed that S. frugiperda populations were predominantly distributed in northern South China and southern Southwest China from January to March. In late April, eastern populations began their northward migration, whereas the western migratory pathway lagged behind. From May to June, the main infestation areas in the east were located in the middle and lower reaches of Yangtze River Plain, while the western populations concentrated in the Sichuan-Guizhou region. By late July, eastern pathway had advanced into North China, and the western populations continued northward, with the northernmost detections reaching south-central Inner Mongolia. In midAugust, eastern populations began returning southward, whereas the western return migration was delayed by approximately half a month. From 2019 to 2023, S. frugiperda exhibited a predominantly northward migration pattern, and typhoon activity not only concentrated its migratory direction but also induced significant directional shifts in China. During non-typhoon period, eastern populations migrated over significantly longer distances than western populations; however, under typhoon influence, the migration distance of the western populations increased substantially, reducing the east-west disparity. In addition, although the initial-season population size of S. frugiperda declined annually from 2020 to 2023, the eastern population remained larger than the western population, and month catches during typhoon period were significantly higher than those during non-typhoon period. Overall, the five-year invasion process demonstrates that S. frugiperda has formed a characteristic migration pattern in China, with concurrent eastern and western migration routes, characterized by northward movement during spring and summer and southward return in autumn. Furthermore, its migration direction, distance, and population scale are all significantly influenced by typhoons. |
| keywords:Spodoptera frugiperda invasion migration pattern China typhoon |
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