The Key Sector Identification: A Sectoral Elasticity Method
关键部门判别的部门弹性法

Although the power of dispersion and sensitivity of dispersion indices introduced by Rasmussen are traditional measures to identify key sectors,they seem to fluctuate according to the sectoral size.This paper proposed sectoral elasticity indices to correct it.Furthermore,based on added values indices in input-output tables,considering sectoral contribution to GDP,sectoral elasticity indices measure how response sectoral added values when faced with an change in the final demand.At final,using 1997' input-output tables,we analyze the key sectors in China.