中国城市林业2025，Vol.23Issue(1)：18-27,45,11.DOI:10.12169/zgcsly.2023.12.26.0002
干旱半干旱区城市公园绿地环境效益评价
Environmental Benefits of Urban Park Green Space in Arid and Semi-arid Area:An Evaluation
摘要
Abstract
[Objective]The environmental benefits of urban parks in arid and semi-arid areas are evaluated to provide data support to determine the optimum configuration model of vegetation community structure.This study aims at offering the theoretic basis for the construction of urban green spaces.[Method]Chilechuan Park in Hohhot is taken as the research object,and 10 clear-sky days and 10 partly-cloudy days in different seasons from 2020 to 2021 were selected,respectively.The air temperature,relative humidity,average wind speed,PM2.5,air positive and negative ions,and noise of 5 different green space structures and control points were monitored on the spot from 7∶00 to 19∶00,and the changes and their characteristics were analyzed and the environmental benefits were evaluated.[Result]The seasonal diurnal variation and seasonal mean value of human body comfort index(ICHB)fall in the categories of more comfortable(Ⅴ),warmer(Ⅵ),comfortable(Ⅳ)and cold(Ⅱ).No significant differences are observed among the green spaces of varying structure within a given season.PM2.5 is"high in the morning and low in the afternoon"in different seasons,and the lowest value is captured from 15∶00 to 19∶00.The mean value of PM2.5 reaches the highest in winter and the lowest in summer.The diurnal and seasonal variations of PM2.5 can meet the Class Ⅱ standard for ambient air quality.The clean index(CI)at 18∶00-19∶00 in spring,summer and autumn and at 7∶00-8∶00 in winter reach tolerance(D)or above.The mean grades in different seasons are C-D,B-C,B-C and C-D,respectively,and the mean grade at the control points is D.The mean value of the shrub-grass combination is the highest in winter,and the mean value of the arbor-shrub-grass combination in other seasons is the highest.The mean noise in winter is Ⅰ-Ⅲ,the mean noise in other seasons is Ⅰ-Ⅱ,and the noise of multi-layer structure is lower in the same season.The noise in green spaces of different structures is significantly higher in autumn and winter than in other seasons.[Conclusion]PM2.5 is the main factor affecting the environmental benefit of urban park green space,and the shrub-grass combination in spring and the arbor community in summer,autumn and winter present the highest environmental benefits.It is recommended that the park management department should adopt a seasonal approach to green space management and formulate a science-based renewal planning scheme for green spaces based on the environmental benefit performance of green spaces of different structures.关键词
城市公园绿地/人体舒适度指数/PM2.5/空气清洁度指数/噪声Key words
urban park green space/comfort index of human body(ICHB)/PM2.5/clean index(CI)/noise引用本文复制引用
包红光,王波,闫晓云,贾雨龙,秦嘉泽,王卫民..干旱半干旱区城市公园绿地环境效益评价[J].中国城市林业,2025,23(1):18-27,45,11.基金项目
内蒙古农业大学青年教师科研能力提升专项(BR220132) （BR220132）
内蒙古自然科学基金博士基金项目(2019BS03018) （2019BS03018）
中国气象局项目(CXFZ2022J042). （CXFZ2022J042）
