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首页> 外文期刊>Journal of Arboriculture >Integrated vegetation management on an electric transmission right-of-way in Southeastern Pennsylvania, U.S.
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Integrated vegetation management on an electric transmission right-of-way in Southeastern Pennsylvania, U.S.

机译：在美国宾夕法尼亚州东南部的一条电力传输通道上进行综合植被管理

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Integrated Vegetation Management (IVM) via the wire-border zone method has been used for the maintenance of vegetation along an electric utility transmission right-of-way (ROW) at the Green Lane Research and Demonstration Area, Montgomery County, Pennsylvania, USA since 1987. The wire-border zone method creates a forb-grass-short shrub cover type in wire zones and a tall shrub cover type in border zones. The Green Lane Research and Demonstration Area has been studied annually since 1987, which makes this 18-year-old project one of the longest continuous studies documenting the effects of mechanical and herbicidal maintenance on flora and fauna along an electric transmission ROW. This paper presents target (undesirable) tree density and cover-type development in response to IVM prior to the most recent treatment (June 1999) and 4 to 5 years after treatment. Excellent control of target trees was noted in 1999 in wire zones of mowing plus herbicide units; in contrast, tree control was poor in wire zones of mechanical units (mowing and handcut). Maximum tree height averaged 4.3 m (14 ft) and 4.9 m (16 ft) in wire and border zones, respectively. Immediately prior to the 1999 treatment of the Green Lane ROW, cover types in wire zones of herbicidal units (mowing plus herbicide (Tordon and Garlon), stem-foliage spray, and foliage spray) were classified as shrub-forb-grass-tree, whereas types in border zones of these units were tree-shrub-forb. Both wire and border zones of mechanical units were considered tree-shrub-forb cover type. The overall density of target trees increased 7.3 and 26.4% in wire zones and border zones, respectively, in 2004 compared to 2003. From 1999-2004, the most common target tree species on the Green Lane ROW was white ash (Fraxinus americana). In both 2003 and 2004, shrubs and forbs were the most important cover types in wire zones of all treatment units; grass cover type, however, was important in wire zones of five of the ten units. IVM of a ROW is a tree resistant but not a tree proof means of reducing tree invasion. Competition with existing plants and wildlife predation on tree seeds on a ROW managed via the wire-border zone method keeps tree invasion to a minimum. Thus, over the years since 1987, IVM and the wire-border zone method of ROW maintenance have increased the time between treatment cycles, thereby reducing labour and chemical costs for ROW maintenance..
机译：通过线边界带方法进行的综合植被管理（IVM）已用于美国宾夕法尼亚州蒙哥马利县格林巷研究与示范区沿电​​力传输的通行权（ROW）沿线的植被维护。 1987年。导线边界区域方法在导线区域创建了一种短草丛灌木类型，在边界区域创建了一种高灌木丛类型。自1987年以来，每年都对Green Lane研究与示范区进行研究，这使得这个有18年历史的项目成为最长的连续研究之一，该研究记录了机械和除草维护对沿电力传输ROW的动植物的影响。本文介绍了在最近处理之前（1999年6月）和处理后4至5年响应IVM的目标（不希望的）树木密度和覆盖类型的发展。 1999年，人们注意到割草加除草剂的金属丝区域对目标树木的控制效果极好;相反，机械单元（割草和手工割草）的金属丝区域的树木控制能力较差。电线和边界区域的最大树高分别平均为4.3 m（14 ft）和4.9 m（16 ft）。在1999年对Green Lane ROW进行处理之前，将除草单元（割草加除草剂（Tordon和Garlon），茎叶喷雾剂和观叶喷雾剂）的金属丝区域的覆盖类型归类为灌木丛，草丛，这些单位边界区域的类型是灌木丛。机械单元的导线和边界区域都被认为是灌木丛状的覆盖物类型。与2003年相比，2004年，铁丝网区和边界区的目标树的总体密度分别增加了7.3％和26.4％。从1999年至2004年，Green Lane ROW上最常见的目标树种是白灰（Fraxinus americana）。在2003年和2004年，灌木丛和灌木丛都是所有处理单元金属丝区域中最重要的覆盖类型。然而，草皮类型在十个单元中的五个单元的电线区域中很重要。 ROW的IVM是抗树的，但不是减少树入侵的树证明方法。通过线边界区域方法管理的ROW上与现有植物的竞争以及野生动植物对树种子的捕食，使树木的入侵降到最低。因此，自1987年以来，多年来，IVM和ROW维护的导线边界区域方法增加了处理周期之间的时间，从而减少了ROW维护的人工和化学成本。

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