社区花园作为新兴起的一种城市绿地形式,以其自发性强、参与性高等特点成为城市居民营建可食景观的首选方式.但近年来的研究发现,社区花园土壤存在来源复杂、性质不稳定等城市棕地的特点,其土壤质量可能影响可食植物的安全性.因此,针对近10年来国内外社区花园土壤及其治理方式进行梳理,基于Web of Science(WOS)和中国知网(CNKI)数据库,利用CiteSpace分析其热点主题、发文量和发展趋势等,从问题表征、研究对象与方法、理论与技术层面分析其研究现状与进展.在此基础上,对社区花园土壤存在的问题与治理方法进行总结.研究表明:社区花园用地属性不明,土壤现状复杂多变,存在以重金属、多环芳烃等为主的土壤污染,可能会对人体健康产生危害;土壤养分低,有干旱和碱化趋势;现阶段社区花园土壤治理方法以植物修复为主,多种技术联合为辅.研究结果可为社区花园的建设、管理和维护提供借鉴与参考.
Research Progress of the Current Status and Governance Methods of Soil Issues in Community Gardens at Home and Abroad in Recent Ten Years
Community gardens,as an emerging form of urban green space,have become the preferred ways for urban residents to create edible landscapes due to their strong spontaneity and high level of participation.However,recent studies have found that the soil in community gardens exhibits characteristics typical of urban brownfields,such as complex sources and unstable properties.The quality of this soil may impact the safety of edible plants.Therefore,this paper aims to systematically review the relevant research and governance models of community garden soil at home and abroad over the past decade.Utilizing the Web of Science(WOS)and China National Knowledge Infrastructure(CNKI)databases,and employing CiteSpace for analysis,the study examines the hot topics,publication volume,and development trends.The research progress is analyzed from the perspectives of problem characterization,research subjects and methods,as well as theories and technologies.Building upon this foundation,a summary of the issues and governance methods related to community garden soil is provided.The results indicate that the land use attributes of community gardens are unclear,and the soil conditions are complex and variable.There is evidence of soil pollution,primarily involving heavy metals and polycyclic aromatic hydrocarbons,which may pose risks to human health.Additionally,the soil exhibits low nutrient levels and tendencies toward drought and alkalization.At present,the primary method for community garden soil remediation involves phytoremediation,supplemented by various combined technologies.The research findings can serve as valuable references for the construction,management,and maintenance of community gardens.
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