由於近年貿易障礙的大幅降低，帶動全球價值鏈的發展，使國際間的互動日益頻繁，根據比較優勢理論（Law of Comparative Advantage），跨國企業選擇對其機會成本較小的地區製造產品，國家也選擇專業化生產其較具優勢的產品，並通過國際貿易換取他國的產品，全球價值鏈的運作使各地能生產出價格相對較低的商品及服務，貿易使雙方都有利。然而在全球不斷深化的生產分工下，使得貨物在到達最終消費者之前的價值鏈距離越來越長，以及價值鏈碳排放對氣候環境造成的外部效果。本研究探討在全球發展經濟之下，價值鏈定位與價值鏈碳排放之間的關係，藉以了解各國產業部門生產價值鏈的發展重點，得出兩者不具關聯性，亦即一國可能犧牲了環境，卻沒有帶來相應的經濟發展，或一國未對環境造成嚴重破壞，卻仍與全球價值鏈生產運作緊密相連。此外，本研究提出排放強度的觀點，幫助國家及企業擬定兼顧經濟與環境的改善策略。

In recent years, due to the significant reduction of trade barriers, it has promoted the development of global value chains. However, with the deepening of the global division of production, the distance of value chains before reaching the final consumer is getting longer and longer, and carbon emissions on value chains would cause external effect on environment. Therefore, this research uses the input-output method to calculate the participation indexes, length and carbon emissions of global value chains of 26 industry sectors in 190 countries in 2015, and explores the relationships between the three. The results show that they are not related, that is, a country may have sacrificed the environment without bringing corresponding economic development, or a country has not caused serious damage to the environment, but is still closely connected with the operation of the global value chain. In addition, this research proposes the perspective of emission intensity, and helps countries and enterprises to formulate improvement strategies that take into account the economy and the environment.

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