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首页> 外文期刊>Journal of Arboriculture >Effect of herbicide maintenance of an electric transmission line right-of-way on butterfly populations
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Effect of herbicide maintenance of an electric transmission line right-of-way on butterfly populations

机译:输电线路除草剂维护对蝴蝶种群的影响

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A study was carried out in 1997 of the butterfly populations on the right-of-way of a 230-kV transmission line of GPU Energy in the forested Allegheny Mountain Physiographic Province of central Pennsylvania. The objective was to determine if herbicide spray maintenance had produced an adverse impact on butterfly populations. Butterfly counts were made at 7 points in time during the growing season to coincide with flowering of important plant species. On the handcut control unit, there was a total of 14 butterfly species and 58 individuals present over the growing season. In contrast to this, there was a total of 20 butterfly species present on the high-volume basal spray unit, 19 species on the mowing plus herbicide spray unit MH-1, and 22 specieson the mowing plus herbicide spray unit MH-3. The number of individual butterflies ranged from 172 to 186 on the 2 mowing plus herbicide spray units to 342 on the high-volume basal spray unit. These results indicate that herbicide spray maintenance hadnot produced an adverse effect on butterfly species and number of individuals compared with handcutting without herbicides.
机译:1997年,在宾夕法尼亚州中部森林密布的阿勒格尼山自然省,在一条230 kV GPU能量输电线路的右侧对蝴蝶种群进行了研究。目的是确定除草剂喷雾维护是否对蝴蝶种群产生了不利影响。在生长季节的7个时间点对蝴蝶进行计数,以配合重要植物的开花。在手动控制单元上,整个生长季节共有14种蝴蝶和58个个体。与此相反,在大容量基础喷雾装置上共有20种蝴蝶,在割草加除草剂喷雾装置MH-1上有19种,在割草加除草剂喷雾装置MH-3上有22种。在2个割草加除草剂喷雾装置上,单个蝴蝶的数量范围从172至186,在大容量基础喷雾装置上,数量为342。这些结果表明,与不使用除草剂手工割草相比,维持除草剂喷雾对蝴蝶种类和个体数量没有产生不利影响。

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