摘要
坡坎崖空间是山地城市最具特色的景观要素,对其进行绿化美化是提升城市景观品质的重要途径,然而对于坡坎崖绿化效果目前尚缺乏有效的评价方法。文章以重庆市已开展的系列坡坎崖工程为研究对象,在收集使用者诉求的基础上,综合运用词频分析、德尔菲法和层次分析法尝试构建能反映坡坎崖特征的绿化评价指标体系,并通过与使用者主观打分进行对比验证指标体系的合理性。结果表明:针对坡坎崖的绿化评价指标体系大致应包含生态性、观赏性、功能性、经济性4个准则层和14个对象层指标;不同类型的坡坎崖地段绿化重点有所不同,交通防护型侧重功能性与经济性,公园景观型侧重功能性与观赏性,而山体修复型侧重生态性与经济性;评价模型测试结果与主观评价结果呈高度正相关关系,评价指标体系总体上合理可靠。最后,根据评价结果,提出坡坎崖绿化的优化策略:打造生态绿廊、美化交通节点,丰富景观功能、突出景观特色,修复绿色基底、优化山林景观,以期为山地城市坡坎崖特殊地段绿化工程实施与效果评价提供参考。
As the steep terrain space is the most distinct landscape elements of mountainous cities,its greening and beautifying is an important way to improve the quality of urban landscape,but there is still a lack of effective evaluation methods for its greening effect.In this paper,we take a range of projects that have been implemented in Chongqing as the research object,and use word frequency analysis,Delphi method and Analytic Hierarchy Process(AHP)to build a greening evaluation index system that can reflect the characteristics of steep terrain space based on the collection of users'demands,and verifies the reasonability of the index system by comparing it with the users'subjective scores.The results show that the greening evaluation index system for steep terrain space should broadly include 4 criteria of ecology,ornamentality,functionality and economy,and 14 indicators.Different types of steep terrain space have different greening priorities.The traffic safety assurance type puts the focus on functionality and economy,the park landscape type focuses on functionality and ornamentality,while the mountain restoration type highlights ecology and economy.The modeled evaluation is highly positively correlated with subjective evaluation in results,and the index system of evaluation is generally reasonable and reliable.At the end,based on the evaluation results,the optimization strategy of steep terrain space greening is proposed,i.e.,to create ecological green corridor,beautify traffic nodes,improve landscape functions and characteristics,repair green substrate and beatify the landscape of mountain forests,with a view to providing the references for evaluating the implementation and effects of greening project in the special steep terrain space of mountainous cities.
作者
王艺芳
李波
黄诗黎
唐欣杨
蔡恵
Wang Yifang;Li Bo;Huang Shili;Tang Xinyang;Cai Hui(Faculty of Architecture and Urban Planning,Chongqing University,Chongqing 400030,China;Ministry of Education Key Laboratory of New Technology for Construction of Cities in Mountain Area,Chongqing 400030,China)
出处
《中国城市林业》
2023年第6期143-150,共8页
Journal of Chinese Urban Forestry
基金
重庆英才计划包干制项目(2021YC009)
重庆市技术创新与应用发展专项重点项目(CSTB2022TIAD-ZXX0051)
重庆大学实验室技术安全研究项目(syaq202201001)。
关键词
山地城市
坡坎崖空间
绿化评价
指标体系
mountainous city
steep terrain spaces
greening evaluation
index system
