Study on carbon fixation and oxygen release ability of urban greening tree species based on spatial and temporal dynamic analysis

Abstract

In order to overcome the problems of one-sided analysis index and low accuracy of traditional carbon fixation and oxygen release ability analysis method, a research method of carbon fixation and oxygen release ability of urban green tree species based on spatiotemporal dynamic analysis was proposed. Four common plants of Magnoliaceae were selected as the objects of study. The spatial and temporal dynamic analysis method was introduced to analyse the correlation factors of the tree species such as the light response curve and the diurnal variation characteristics of the net photosynthetic rate. The carbon sequestration capacity of leaves and individual green tree species was quantified. The experimental results show that this method can accurately analyse the carbon sequestration and oxygen release capacity of green tree species, improve the photosynthesis effect, optimise the cooling and humidification scheme, improve the carbon sequestration and oxygen release effect, and make a significant contribution to urban greening.