森林工程2026，Vol.42Issue(4)：718-727,10.DOI:10.7525/j.issn.1006-8023.2026.04.006
重庆市鸿恩寺公园绿地生态系统固碳效益分析
Carbon Sequestration Benefits of Urban Park Green Space Ecosystem in Chongqing Hongensi
摘要
Abstract
The carbon sequestration benefits and ecological value of urban park green spaces are of critical importance for enhancing ecosystem service functions in cities.This study focused on Hongensi Park in Chongqing.Based on 60 plots(20 m×20 m)established across six sample areas(S1,S2,…,S6),field measurements of diameter at breast height(DBH),tree height,species composition,and individual abundance were collected.By integrating relative biomass al-lometric equations with carbon conversion coefficients,we systematically estimated biomass,carbon sequestration,and associated economic benefits for plant species within the tree,shrub,and herb layers,and further examined plot-scale variability.The results showed that the plant community in Hongensi Park comprised 54 species.The tree layer domi-nated the carbon sequestration function,with a biomass of 1.22×106 kg(92.14%of the total)and an annual carbon se-questration benefit of 2.31×104 CNY(90.52%of the total benefit).Osmanthus fragrans and Ginkgo biloba were the dominant tree species,whereas Nandina domestica and Photinia×fraseri were the dominant shrubs.Although the herb layer contributed less than 2%of total biomass,its carbon sequestration efficiency reached 50%.Carbon sequestration benefits exhibited pronounced spatial heterogeneity among plots,driven jointly by soil conditions,community composi-tion,and individual traits;notably,S5 achieved the highest carbon sink benefit per unit area.Overall,the carbon sink function of urban parks is highly sensitive to the structural characteristics and growth status of the tree layer.On the premise of conserving dominant large-diameter trees and improving stand regeneration structure,optimizing the tree-shrub-herb configuration and implementing supplementary planting are expected to enhance the carbon sink potential of urban green spaces and related ecosystem service efficiency.These findings provide a theoretical basis for improving car-bon sink functions in urban parks and for achieving synergistic gains with biodiversity conservation.关键词
鸿恩寺公园/植物群落/生物量/林业碳汇/固碳效益Key words
Hongensi Park/phytocoenosis/biomass/forestry carbon sink/carbon sequestration benefits分类
农业科技引用本文复制引用
彭懋文,王文豪,万宇,孔巧灵..重庆市鸿恩寺公园绿地生态系统固碳效益分析[J].森林工程,2026,42(4):718-727,10.基金项目
重庆市城市管理局基金项目(城管科字[2023]第34号). （城管科字[2023]第34号）
