Biodiversity effects in carbon sequestration from human activities

Emissions of carbon dioxide from cities have increased significantly in the last few decades with rapid urbanization. It is an important scientific question to what extent carbon dioxide emissions from urban activities can be offset by maintaining or increasing carbon sequestration in and around urban areas. Although natural terrestrial ecosystems absorb some of the emitted carbon dioxide, the long-term sustainability of these ecosystems is affected by their biodiversity status. In this study, using the data obtained from field surveys, field and laboratory measurements, the carbon sequestration capacity of vegetation on the northwestern outskirts of Tehran was estimated. Identification of biomass relationships with diversity, richness and uniformity indices was also assessed by Pearson correlation test. The results showed that the diversity index of Simpson and Shannon Wiener was normal and their distribution was symmetric. In the study of Ghana indices, both Margalf and Mannich indices had a normal distribution. The Hill uniformity index distribution was not normal but the Pete uniformity index had a normal distribution. Investigation of the relationship between vegetation topsoil and study indices showed that between Simpson diversity index (n=37, P<0.039, and r=66.91%), Shannon-Wiener diversity (n=38, p<0.033, and r=53.58%). Ghana Margalf (P<0.033, n=38, r=21.52%), Ghana Manichae (P<0.035, n=38, r=19.71%), Peat uniformity (P<0.010, n=38, r=17.36%) There is a significant and positive relationship with terrestrial biomass. The conditions and structure of vegetation on the outskirts of cities can indicate the status of carbon sequestration in the region and the amount of carbon sequestration of such ecosystems is directly affected by the indicators of diversity, richness and uniformity of vegetation.