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Building shading affects the ecosystem service of urban green spaces: Carbon capture in street canyons
Ecological Modelling ( IF 3.1 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.ecolmodel.2020.109178 Zhen Guo , Zhiwei Zhang , Xiaogang Wu , Jing Wang , Peidong Zhang , Dan Ma , Yuan Liu
Ecological Modelling ( IF 3.1 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.ecolmodel.2020.109178 Zhen Guo , Zhiwei Zhang , Xiaogang Wu , Jing Wang , Peidong Zhang , Dan Ma , Yuan Liu
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Abstract The urban building environment has dramatically transited into a high-rise style. Consequently, street canyons have changed the daytime solar radiation distribution and indirectly affected the photosynthesis of the surrounding ecosystems. Because of the interdisciplinary nature of the topic, quantitative studies are rare. In this study, a new approach combining radiation simulation and in situ observations was proposed, aiming to provide support towards sustainable urban spatial planning and management. Taking the Central Business District (CBD) of Beijing as the research area, the range and intensity of the shading effect were assessed based on a Digital Surface Model (DSM) and Solar Radiation Analysis (SRA). The findings reveal the following: 1) The daytime carbon capture of green space was 33.14 ± 12.43 gCO2 m-2 d-1, which included 85.6%, 11.9%, and 2.5% from trees, shrubs, and grassland, respectively. 2) The Carbon Capture Index (CCI) of the arbor zone was approximately two and five times that of shrubs and grassland, respectively. The sensitivity of carbon capture to the building height increased in the order shrubs
更新日期：2020-09-01
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