Urban greening expertise and programs are pursued and circulated globally to enhance urban livability and sustainability, but the outcomes are often mixed and are accompanied by side effects. Drawing on the concept of “worlding,” this paper examines the processes and outcomes of a training program that introduced tree climbing techniques from overseas to reduce the aggressive pruning practices by the municipal workforce in Bangkok, Thailand. Steered by Thai civil society organizations (CSOs) and international arborists, the training program was supported by the city government and local forestry experts. However, the outcomes were limited. A variety of temporal, logistical, and place-specific factors (including traffic, weather, size and accessibility of trees), constrained the applicability of the introduced techniques for pruning street trees in Bangkok. These crucial urban contextual factors were neglected in the training program design due to knowledge conflicts between the “civic experts” and “lay practitioners,” which undermined the potential of the training program. Illustrating urban treescapes as everyday workplaces and knowledge battlegrounds, this paper argues that aspirations for world-leading expertise might hamper the expression of tacit knowledge that stems from and coordinates with a specific urban context. The conclusion highlights the importance of inclusivity to achieve successful transnational circulation of greening expertise and broader urban transformative attempts involving global knowledge exchange.

中文翻译：

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城市树景作为日常工作场所和知识战场：泰国曼谷的经验教训


全球范围内追求和传播城市绿化专业知识和计划，以提高城市宜居性和可持续性，但结果往往是好坏参半，并伴有副作用。本文借鉴“世界化”的概念，研究了一项培训计划的过程和结果，该计划引进了海外的爬树技术，以减少泰国曼谷市政工作人员的侵略性修剪做法。该培训计划由泰国民间社会组织（CSO）和国际树艺家指导，并得到市政府和当地林业专家的支持。然而，结果是有限的。各种时间、后勤和特定地点的因素（包括交通、天气、树木的大小和可达性）限制了所引入的曼谷行道树修剪技术的适用性。由于“公民专家”和“非专业从业者”之间的知识冲突，这些关键的城市文脉因素在培训计划设计中被忽视，从而削弱了培训计划的潜力。本文将城市树景描述为日常工作场所和知识战场，认为对世界领先专业知识的渴望可能会阻碍源自特定城市环境并与之协调的隐性知识的表达。结论强调了包容性对于实现绿化专业知识成功跨国流通和涉及全球知识交流的更广泛城市变革尝试的重要性。