海绵城市理念下城市口袋公园景观优化设计及效益量化研究OA

To address the problems of rainwater flooding,monotonous landscapes,insuffcient ecological functions,and low resource utilization in old urban pocket parks,this paper introduces the core concept of sponge city.Three typical old pocket parks in Duanzhou District,Zhaoqing City,namely Baoyue Park,the Supply and Marketing Cooperative-themed Pocket Park,and Origin Plaza Pocket Park in Yanqian Village,were selected as research subjects.Through field surveys,data monitoring,model quantification,and comparative case analysis,the core existing problems of old pocket parks were identified,and the targeted sponge-oriented landscape optimization design strategies suitable for Lingnan subtropical climate were proposed.Meanwhile,a benefit quantification evaluation system comprising four dimensions of hydrological ecology,landscape environment,social services,and economic energy conservation was constructed,and the volumetric method and analytic hierarchy process(AHP)were employed to quantify the renovation benefits.The results showed that after renovation,the average annual runoff volume control rates of the three pocket parks all increased by more than 28%,the site flooding problems were completely resolved,and landscape comfort and public usage rates were improved significantly,achieving the multiple values of ecological restoration,landscape upgrading,and public service facilitation.This paper can provide data support and practical references for the sponge-oriented renewal and transformation of old pocket parks in south China.