园林绿化垃圾在土壤改良中的资源化应用  

Resourceful Application of Landscaping Waste in Soil Improvement

作　　者：陈月 胡艳燕 CHEN Yue;HU Yanyan(Chongqing Landscape and Gardening Research Institute;Chongqing Garden Soil Quality Testing Center;Chongqing Key Laboratory of Germplasm Innovation and Utilization of Native Plants;Chongqing Landscape and Gardening Research Institute,Urban Soil Research Institute)

机构地区：[1]重庆市风景园林科学研究院 [2]重庆市园林土壤质量检测中心 [3]川渝共建乡土植物种质创新与利用重庆市重点实验室 [4]重庆市风景园林科学研究院城市土壤研究所

出　　处：《风景园林》2024年第9期94-100,共7页Landscape Architecture

基　　金：2023年度重庆市工程建设标准制定修订项目“园林绿化垃圾园林资源化利用技术标准”;重庆市科技局绩效引导项目“生活污泥园林资源化利用对城市绿地土壤生态功能的影响研究”(编号cstc2022jxjl20017);重庆市城市管理科研项目“公园绿地土壤碳储量及减排增汇研究”(城管科2021第15号);重庆市科研院所绩效激励引导专项“重庆市行道树结构特征及生态效益综合评价”。

摘　　要：【目的】随着中国城市园林绿化事业快速发展,园林绿化垃圾产生量也在快速增长,园林绿化垃圾的资源化应用逐渐成为城市管理中不可忽视的重要问题。园林绿化垃圾无害化处理及资源化利用对积极稳妥推进碳达峰碳中和以及发展绿色循环经济具有重要意义。【方法】采用协同堆肥的方法将城镇生活污泥与园林绿化垃圾按照1∶1.5~1∶2.0的体积比进行无害化处置,根据土壤改良的需求,因地制宜地将园林绿化垃圾堆肥产物应用于土壤改良工程实践中,对比改良前后的景观效果和土壤的质量,评价园林绿化垃圾在土壤改良中的资源化应用效果。【结果】改良后绿地土壤的有机质含量和养分含量较改良前显著提高,土壤结构和植物生长微环境均得到有效改善,景观效果得到显著提升,园林绿化垃圾的堆肥产物在土壤改良中得到了有效的资源化应用。【结论】园林绿化垃圾在城市土壤质量管理和提升中实现了“来于绿地,归于绿地”的资源化应用,不仅有助于减少环境污染,还能提升土壤质量,促进生态循环,为园林绿化垃圾的资源化处理利用提供了科学有效的技术路径,有效促进了资源循环利用产业的发展。[Objective]With the continuous improvement of social and economic development levels,as well as the ongoing urbanization process,there is a growing emphasis on refining conservation and management practices for various green spaces in response to the gradual expansion of urban landscaping construction.Consequently,the issue of rapidly increasing landscaping waste production has become an important concern that cannot be overlooked in urban management.In Chongqing's central urban area,where large amounts of pruning wastes from trees and shrubs are generated,current disposal methods primarily involve landfilling and incineration with low rates of resourceful utilization.This not only leads to pollution in the atmosphere,water bodies,and soil environment,but also results in wastage of resources.However,it is worth noting that landscaping waste holds significant potential for resourceful utilization;the main products of landscape waste may include biochar,garden mulch,organic compost,soil amendments,cultivation substrates,and wood-plastic products.Among these options,composting technology stands out as an efficient method for dealing with landscaping waste while being a relatively mature organic solid waste treatment technology thus far.Therefore,establishing an industry chain for harmless disposal of landscaping waste through resourceful land utilization holds great significance in promoting the harmless treatment and resourceful utilization of landscaping waste while actively boosting the achievement of carbon peaking and carbon neutrality goals and fostering the development of a green circular economy.[Methods]The composting technology aims to raise the temperature within the compositing system by means of metabolic and proliferative reactions of microorganisms under conditions characterized by abundant oxygen,excellent ventilation,suitable temperature,and moisture content.This facilitates the decomposition of composts while further eliminating harmful microorganisms therein,ultimately transforming them into organ

关 键 词：风景园林 园林绿化垃圾 土壤改良 技术应用 资源循环 

分 类 号：TU986[建筑科学—城市规划与设计]