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首页> 外文期刊>Ecological restoration >Control of Invasive Japanese Climbing Fern (Lygodium japonicum) and Response of Native Ground Cover During Restoration of a Disturbed Longleaf Pine Ecosystem
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Control of Invasive Japanese Climbing Fern (Lygodium japonicum) and Response of Native Ground Cover During Restoration of a Disturbed Longleaf Pine Ecosystem

机译：恢复受干扰的长叶松生态系统期间侵略性日本爬山蕨（Lygodium japonicum）的控制和原生地被植物的响应

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摘要

Japanese climbing fern (Lygodium japonicum) is an invasive species prevalent through the southeastern United States that grows on, around, and intermingles with native groundcover in a variety of forest ecosystems. Management of this species can be problematic because herbicide control must also ensure minimal impact to native plants, particularly in ecosystems undergoing restoration and recovery from disturbance. We tested 3 herbicides (glyphosate, imazapyr, and metsulfuron methyl) at various rates, alone and in combination, to evaluate their efficacy for fern control and impacts to non-target, native groundcover in a longleaf pine (Pinus palustris) ecosystem subject to dormant season burns and hurricane and salvage logging disturbances. All herbicide treatments reduced Japanese climbing fern cover by 77-98% at 1 yr following treatment, but at 2 yr there was considerable re-growth on imazapyr and metsulfuron-methyl treated plots. Glyphosate applied alone as a 2 or 4% solution provided 91-98% fern control after 2 yr, and there was no signifi-cant improvement using combinations of glyphosate with other herbicides. Climbing fern cover increased by 70% in the untreated control. We found a significant correlation between reduction in fern cover and increase in other vegetation, though species composition changed minimally. Species richness at 2 yr after treatment increased by 2-3 species follow-ing application of glyphosate alone or in combination, and decreased on the untreated control. We recommend directed spray applications using 2% glyphosate solutions for efficient control. Using this approach on matted fern should result in little detriment to native groundcover, even with this broad-spectrum herbicide.
机译：日本攀援蕨（Lygodium japonicum）是一种入侵物种，遍及美国东南部，在各种森林生态系统中生长，生长并与当地地被植物混合。该物种的管理可能会出现问题，因为除草剂的控制还必须确保对本地植物的影响最小，尤其是在经历恢复和从干扰中恢复的生态系统中。我们单独或组合测试了3种除草剂（草甘膦，吡虫啉和甲磺隆）的不同比率，以评估它们对蕨类植物的防治效果以及对处于休眠状态的长叶松（Pinus palustris）生态系统的非目标天然地被植物的影响。季节烧伤，飓风和打捞伐木的干扰。所有除草剂处理均在处理后的1年使日本的攀援蕨类植物覆盖率降低了77-98％，但在2年时，吡虫啉和甲磺隆处理的地块上有相当大的重新生长。草甘膦单独施用为2％或4％的溶液，两年后可提供91％至98％的蕨类控制，使用草甘膦与其他除草剂的组合则无明显改善。在未经处理的对照组中，攀援蕨类植物的覆盖率增加了70％。我们发现蕨类植物的覆盖减少与其他植被的增加之间存在显着的相关性，尽管物种组成变化很小。单独或联合施用草甘膦后，处理后2年的物种丰富度增加了2-3种，而未处理的对照组则有所降低。我们建议使用2％草甘膦溶液进行定向喷雾应用，以实现有效控制。即使在使用这种广谱除草剂的情况下，在杂草丛生的蕨类植物上使用这种方法也不会对当地的地被植物造成损害。

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