Though most cities, particularly in the Global North, have been intensely modified by human activities certain locations still exist in varied forms of abandonment or disinvestment, often allowing for new species assemblages to flourish. These urban novel ecosystems or informal wild spaces are often perceived as in-between or overlooked, calling into question their value and social-ecological role, while also creating tensions amongst different groups and stakeholders who share different visions for their use and management. Within these tensions, issues of justice and equity can be more pronounced and surface historic legacies of environmental contamination, inequitable development, and extraction. Despite this, very little is known about the social-ecological role informal wild spaces play in urban areas, and how best to interrogate and understand the equity and justice dimensions they elicit. To fill this gap in knowledge, this paper critically examines the literature on urban novel ecosystems in relation to justice, with a particular interest in multispecies justice. Through this analysis, gaps in the literature are exposed, while also arguing the informality, neglect and contestation of wild urban spaces provides opportunities to explore issues of access, benefits and harms, particularly in light of global climate and ecological crises. A systematic approach is utilized to search the literature, identifying 45 papers which are thematically analyzed under a justice lens. The study identifies three themes that thread throughout the literature: distributional injustices relate to perceptions and attitudes, which give rise or arise from injustices; the regeneration discourse focuses on a ‘new nature’, which is based on social-ecological displacement and devaluation; and the potential of urban wild spaces to generate new multispecies sensibilities. The paper concludes by discussing trends, gaps, and emerging discourses, and proposing a multispecies justice approach for urban planning through the learnings and engagement with urban wild, novel ecosystems.

尽管大多数城市，特别是全球北方的城市，已经因人类活动而发生了巨大的变化，但某些地方仍然存在各种形式的废弃或撤资，这常常使新物种组合得以蓬勃发展。这些城市新颖的生态系统或非正式的野生空间通常被认为介于两者之间或被忽视，从而质疑它们的价值和社会生态作用，同时也在对它们的使用和管理有着不同愿景的不同群体和利益相关者之间造成紧张关系。在这些紧张局势中，正义和公平问题可能更加突出，并且会暴露环境污染、不公平发展和开采等历史遗留问题。尽管如此，人们对非正式野外空间在城市地区发挥的社会生态作用知之甚少，以及如何最好地审问和理解他们引发的公平和正义方面。为了填补这一知识空白，本文批判性地审视了与正义相关的城市新型生态系统的文献，尤其关注多物种正义。通过这种分析，文献中的差距得以暴露，同时也争论到野生城市空间的非正式性、忽视和争论为探索获取、利益和危害问题提供了机会，特别是在全球气候和生态危机的背景下。系统的方法被用来搜索文献，确定了 45 篇论文，这些论文在正义的镜头下进行了主题分析。该研究确定了贯穿整个文献的三个主题：再生话语的重点是“新自然”，它基于社会生态置换和贬值；以及城市野外空间产生新的多物种敏感性的潜力。本文最后讨论了趋势、差距和新兴话语，并提出了一种通过学习和参与城市野生、新颖的生态系统来进行城市规划的多物种正义方法。