Measurement of carbon sequestration of highway afforestation in Jiaxing, Zhejiang, China

In the context of global climate change, forest carbon sequestration has become one of important measures of international mitigation of climate warming. With the development of carbon sequestration afforestation, forest carbon sequestration measurement has drawn more and more international attention. According to the Guidelines for Carbon Accounting and Monitoring in the Afforestation Projects, carbon sequestration afforestation and carbon sequestration measures were carried out in the highway interchange hub area in Jiaxing City, Zhejiang Province, and the accounting period would last from 2011 to 2031. The result indicated that the project was a carbon source in 2011, the cumulative amount of net carbon sequestration being-81.59 t(CO2equivalent, i.e., CO2e). It became a carbon sequestration from 2012 and the cumulative amount of net carbon sequestration was 1 747.84 t(CO2e). The cumulative amount of net carbon sequestration would reach 11396.84 t(CO2e) in 2017. By 2031, the cumulative amount of net carbon sequestration would reach 45 886.07 t(CO2e), the average annual net carbon sequestration would be 2 294.30 t(CO2e), and the oxygen emission would be 2 031.00 t. It would have huge carbon sequestration potentials and significant ecological benefits.