政治大學讀書及學習行動小組

Environmental Input-Output Analyses based on NAMEA data: A comparative European study on environmental pressures arising from

consumption and production pattern-------2. Methodology_2.4

Derive from the basic Leontief model, in order to link final demand with primary inputs.

Depending on the variable, 2 types of re-attribution models can be distinguished:

    (1) endogenous variables- immanent to the IOT

         scheme

    (2) exogenous variables-beyond the IOT scheme

Three type model:

    (1) (simple) direct re-attribution

    (2) direct & indirect re-attribution to final demand>> 本文主要

    (3) direct & indirect re-attribution to production-

          transformations

計算汙染排放:

GXj / Qj

      GXj : CO2-emissions by industry j

      Qj : production output of industry j

èga’ = gx’ · <q>^-1

       ga : vector of emission-intensity coefficients

       gx : emission vector (e.g. CO2-emissions by industries)

       q : production output vector

èIf ga is known,

       ga’ = gx’ · <q>^-1

       gx = <ga> · q

èq = (I – A)^-1 · y

   <ga> · q = <ga> · (I – A)^-1 · y

              gx = <ga> · (I – A)^-1 · y

• ·          
• ·          
• ·         gx’*^Y = ga’ · (I – A)^-1 · Y

    (1,6)    (1,60) (60,60) · (60,6)   >>把家計單位分為六個部門

• ·         gx’*^y = ga’ · (I – A)^-1 · <y>

   (1,60)  (1,60) (60,60) · (60,60)   >>家計單位勇產品別(60)個來分

Q:文章的purpose為何?要解決何種問題?貢獻與重要性為何?

Reattribution vs  IEA (OECD) 計算CO2 的算法差異 ==>資料加總與否，排放係數精確與否(資料需求，越精確所需的資料越細)

不同的產業、煤的種類的能源效率、熱值都不同

以Dollar value 計算的 排放量比physical 計算誤差大

Reattribution 與現有co2排放的model 是否有互補