County domain is China's vital administrative units.Research of its carbon sequestration capacity can detail its ecological carbon sequestration status and provide references for authorities to make decisions.This paper employes biological volume and InVEST model,the two common ways in carbon sequestration,to estimate carbon reserve and density in Luqiao district,Taizhou city,Zhejiang province,and compares their carbon sequestration levels in county domains and in towns.Luqiao district's carbon reserve is estimated at 186037.44t by biological volume,and at 1580777.19t by InVEST model,which includes that in soils,contributing to the variance.Carbon density,estimated by the two ways,is similar in geographically distributing,suggesting its carbon sequestration capability be high in western,followed by southern and low in central-northern.This paper presents references for county domains to develop resources and to protect ecological environment.