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Effectiveness of Boundary Structures in Limiting Residential Encroachment into Urban Forests

机译：边界结构在限制居民侵入城市森林中的有效性

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Urban forests provide essential functions in support of human communities; however, studies indicate adjacent residential land uses degrade urban forests following development. The resulting impacts are known as encroachment. Local Ontario governments rely primarily on passive management, such as boundary structures (e.g. fences) to limit this degradation but do not know whether they are effective for limiting the area of the forest floor covered by these impacts. Transect and quadrat sampling of 40 forest edges adjacent to 186 residential properties were sampled in six Southern Ontario municipalities to determine impact frequency and area cover of encroachment. The results indicated some structures are effective in reducing the frequency and area cover of some encroachment behaviours. Other behaviours were not significantly reduced by any structural treatment. Furthermore, some behaviours were increased by structures. Substantial areas of encroachment continued to occur under even the most effective boundary treatments. The treatment most successful in reducing frequency and area was ungated fencing in combination with a mown grass strip. It was found to reduce the incidence of yard extensions and concentrate encroachments closest to forest edges.
机译：城市森林提供了支持人类社区的基本功能；然而，研究表明，相邻的居民土地利用会随着开发而使城市森林退化。由此产生的影响被称为侵占。安大略省地方政府主要依靠被动管理，例如边界结构（例如篱笆）来限制这种退化，但不知道它们是否有效地限制了这些影响所覆盖的森林地面面积。在安大略省南部的六个城市中，对与186个住宅物业相邻的40个森林边缘的样地和样方取样进行了采样，以确定影响频率和侵蚀面积。结果表明，某些结构可有效减少某些侵犯行为的频率和面积覆盖。其他行为没有通过任何结构处理显着降低。此外，某些行为由于结构而增加。即使在最有效的边界处理下，仍然有相当多的侵犯区域。在减少频率和面积方面最成功的治疗方法是与割草条结合使用无栅栏围栏。可以减少院子延伸的发生和减少最靠近森林边缘的集中侵蚀的发生。

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