A study of sink rate in urban biological carbon sequestration with heavy metals of air pollution in different roadside tree species

Abstract

The escalating global growth, coupled with heightened fossil fuel newlineconsumption and resultant carbon dioxide emissions, has led to pervasive newlineairborne contaminants, and altered weather patterns on a global scale. Urban newlinetransportation fuelled by fossil resources exacerbates air pollution, thereby newlineinfluencing environmental components and processes. This research focuses on newlinethe pivotal role of tree species in mitigating the impacts of pollution and outlines newlinetheir significance in the biological cycle solution approach. newlineNineteen distinct tree species were studied, with heavy metal newlineconcentrations recorded for Cd, Cr, Cu, Fe, Pb, and Zn. Findings indicate newlinevarying metal-sinking capabilities among the trees, with Delonix Regia (red and newlineyellow varieties) and Syzygium Cumini exhibiting higher sink rates. The newlinecompetency results establish a hierarchy of heavy metal sinking ability, newlineemphasizing the effectiveness of certain tree species such as Delonix Regia (red) newlineas the top performer. newlineUtilizing soil carbon techniques, the research formulates a remedial newlinestrategy for carbon capture and storage, specifically focusing on biological newlinecarbon sequestration by various tree species. Noteworthy species, such as Ficus newlineElastica, Syzygium Cumini, Tamarind Tree, Terminalia Catappa, and Thespesia newlinePopulnea, are identified as effective carbon sinks with an API rating of G5. newlineFicus Religiosa stands out as the only tolerant species under APTI conditions, newlineshowcasing its resilience among the predominant tree species. newlineProximate analysis outcomes reveal varying carbon sink rates in leaf newlinesamples, ranges upto 18 percentiles, while soil organic carbon (SOC) analysis newlineindicates rates upto 44 percentiles. Identified high carbon-content species, newlineincluding T11, T05, T18, T01, T14, T06, and T19, contribute significantly to newlinecarbon capturing. newline