Past research on barriers to the development and implementation of green infrastructure (GI) has examined the experiences of policy makers and community leaders, with a focus on planting or installing GI. However, many of these programs rely on participation from the public — especially residents — who often steward GI over the long-term on both public and private lands. To better understand the barriers experienced by primary stewards of GI, we conducted 93 intercept interviews with residents spanning four neighborhoods in the City of Philadelphia and in four nearby suburban municipalities with active TPIs. Selected neighborhoods and towns included areas with varied canopy cover and economically and racially diverse communities. We found that residents viewed trees as a neighborhood asset, yet they also identified multiple categories of barriers across the tree lifecycle, including physical, maintenance, aesthetic, knowledge, and environmental issues. Our study also reveals the convergence and divergence of barriers experienced across city and suburban neighborhoods based on contextual factors. Our results suggest that barriers to participation in TPIs are multi-dimensional, context-specific, and endure across the lifecycle of GI. Long-term maintenance concerns relate to tree care that is outside the purview of TPIs led by non-profit organizations. Advancing equitable urban forestry that reaches neighborhoods with the greatest need requires recognition and respect of resident and community experiences, needs, and land use priorities, as well as improved institutional collaboration.

中文翻译：

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居民参与大都市区植树活动的障碍

过去对绿色基础设施（GI）发展和实施障碍的研究考察了政策制定者和社区领袖的经验，重点是种植或安装绿色基础设施。然而，其中许多计划都依赖于公众（尤其是居民）的参与，他们经常在公共和私人土地上长期管理地理标志。为了更好地了解 GI 主要管理者所遇到的障碍，我们对费城四个社区和附近四个拥有活跃 TPI 的郊区城市的居民进行了 93 次拦截访谈。选定的社区和城镇包括树冠覆盖不同的地区以及经济和种族多样化的社区。我们发现，居民将树木视为社区资产，但他们也发现了树木生命周期中的多种障碍，包括物理、维护、美学、知识和环境问题。我们的研究还揭示了基于背景因素，城市和郊区社区所经历的障碍的趋同和分歧。我们的研究结果表明，参与 TPI 的障碍是多维的、针对具体情况的，并且在地理标志的整个生命周期中持续存在。长期维护问题涉及树木护理，这超出了非营利组织领导的 TPI 的权限。推进公平的城市林业覆盖最需要的社区需要承认和尊重居民和社区的经验、需求和土地使用优先事项，并改善机构合作。