A study on perception of urban green space carbon sequestration based on biotope classification

A case study of the Urban Forest in Shanghai

Dados Bibliográficos

ID19586366
AutoresFangfei Xu (Shanghai Urban Construction Design and Research Institute (Group)), Qi Yan (0000-0002-6873-1884), Yan Qi (0000-0001-9542-5607, Tongji University, autor correspondente), Zhenhui Ding (Tongji University)
Ano2025
Volume22
Páginas101047
Data de publicação2025-12-01
Peer ReviewedSim
Open AccessSim
TipoARTICLE
PeriódicoTrees Forests and People (JOURNAL)
Identificadores do periódicoISSN: 2666-7193 • E-ISSN: 2666-7193
EditoraElsevier BV (PUBLISHER)
DOI10.1016/j.tfp.2025.101047
OpenAlexW4415070967
IdiomaEN
Citações recebidas1
Referências citadas66

High alignment observed in closed evergreen biotopes. • Perception exceeded potential in wetland biotopes and was lower in bamboo biotopes. • Green View Index and Simple Ratio positively influenced perception. • NDVI and SR showed strongest alignment between perception and NPP. • Design strategies should balance carbon potential and visual accessibility. The carbon sequestration function of urban green spaces was recognized as important for climate change mitigation; however, spatial alignment patterns between public subjective perception and objective carbon sequestration capacity remained unexplored. This study focused on the urban forest of Sanlin Wedge Green Space in Shanghai. A three-level biotope classification system based on land cover type, tree canopy cover ratio, and dominant plant community was applied. UAV ( Unmanned Aerial Vehicle) remote sensing, panoramic image segmentation, and spatial regression models were combined to examine coupling mechanisms between subjective and objective carbon sequestration assessments across biotopes. Carbon sequestration perception data from 366 panoramic images were compared with net primary productivity (NPP) estimates. Closed evergreen tree biotopes (GE-C-E) exhibited both high NPP and high perception scores, which was attributed to stable canopy structure and visual screening effects that enhanced perceived carbon sequestration benefits. Wetland Metasequoia biotopes (B-PO-D, GE-C-D, GE-C-E) displayed high perception scores despite moderate NPP, likely driven by seasonal foliage changes and negative-ion–rich microclimate associated with wetlands. Bamboo biotopes (GE-C-E) exhibited high NPP but low perception, as dense, uniform structure reduced perceived carbon sequestration. Spatial regression results indicated that green view index (GVI) and simple ratio (SR) had positive global influences on perception. Three-dimensional analysis revealed that normalized difference vegetation index (NDVI) and SR. The study revealed spatial heterogeneity and driving mechanisms of objective and subjective carbon sequestration assessments across urban biotopes, providing a theoretical basis for optimizing carbon sequestration functions and enhancing ecosystem services in urban green spaces

Canopy · Carbon sequestration · Evergreen · Microclimate · Normalized Difference Vegetation Index · Land Use and Ecosystem Services · Urban Agriculture and Sustainability · Urban Green Space and Health