长江下游局部区域美国白蛾发生情况初探——以马鞍山市为例

Preliminary Survey Analysis on the Occurrences of Hyphantria cunea in Local Lower Reaches of the Yangtze River———A Case Study of Ma’anshan City

美国白蛾是一种重大林业有害生物,目前已对长江沿线生态安全造成直接影响。在对历年来长江下游马鞍山市美国白蛾成虫分布及幼虫发生数据统计的基础上,围绕区域地形地貌特点、气候影响、特别是寄主植物物种丰度等影响因子,分析了该区域内美国白蛾疫情发展过程中存在的阶段性现象特点。初步研判得出,该区域美国白蛾虫情沿江扩散甚至暴发的风险仍然存在,需高度警惕其对各类自然保护地、长江大保护特别是生态敏感区域的负面影响,同时针对性提出防控建议。

Hyphantria cunea is a major forestry pest and has directly impacted the ecological security along the Yangtze River at present.In this paper,based on the data statistics on the distribution of the adult pest and occurrences of the larvae pest in local lower reaches of the Yangtze River within Ma’anshan City,an analysis was made on the periodical phenomenon features in the development of the pest outbreaks.It was preliminarily analyzed and concluded that the risk of the pest spread and even outbreak along the Yangtze River still exists.Strong vigilance is needed against the impact of the pest on various nature protected areas and grand conservation of the Yangtze River,especially ecologically sensitive regions.