管理された脱炭素か、構造的排出削減か？ドイツ・ポーランド・ウクライナのLMDI・総炭素コストエクスポージャー・投資能力評価

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:LMDIと炭素コスト・投資能力を統合した診断手法は、脱炭素の質的評価研究に応用可能な分析枠組みを提供する。

🏢実務担当者:自社の排出削減が「管理された脱炭素」か「構造的縮小」かを、炭素コストと投資余力の両面から自己診断する視点を提供する。

🏛政策担当者:排出量の減少のみを政策成功と見なさず、その要因と投資能力を併せて評価する枠組みは、移行政策の設計・検証に有用。

A decline in CO2 emissions is often treated as evidence of successful climate policy, although the same outcome may reflect technological modernization, economic contraction, demographic decline, deindustrialization, or external shocks. Accordingly, the objective is to test whether comparable headline reductions reflect different transition mechanisms when historical drivers, prospective indicative gross carbon-cost exposure, and investment capacity are evaluated jointly. We hypothesize that Germany is closest to managed decarbonization, Poland follows carbon-intensive decoupling, and Ukraine’s decline is predominantly structural or shock-driven and that the joint diagnostic indicates greater contraction risk where multiple investment-capacity measures are weakest, without implying a causal prediction of firm response. This study develops a three-stage diagnostic framework combining additive Logarithmic Mean Divisia Index (LMDI) decomposition, indicative gross sectoral carbon-cost exposure, and multiple macroeconomic investment-capacity indicators to distinguish managed decarbonization from carbon-intensive decoupling and structural or shock-driven emissions decline. The framework is applied to Germany, Poland, and Ukraine for 1990–2024, with subperiods reflecting major structural transformations and shocks. Germany reduced emissions by 482.48 Mt CO2 despite rising population and GDP per capita, as lower energy and carbon intensity more than offset these upward pressures. Poland reduced emissions by 103.48 Mt CO2 mainly through lower aggregate energy intensity, while carbon-intensity improvements were more limited. Ukraine recorded the largest decline (564.03 Mt CO2), but substantial contributions came from lower GDP per capita and population, while carbon intensity increased emissions over the period. At a common benchmark of EUR 75.28/tCO2, Ukraine has the highest indicative gross exposure among the integrated-steel cases, whereas Poland has the highest indicative gross exposure among the electricity cases. The findings show that emissions outcomes should be interpreted jointly with their drivers, sectoral carbon-price transmission, and the capacity to finance technological response.

• crossref https://doi.org/10.3390/su18179126first seen 2026-09-16 05:34:08 · last seen 2026-09-19 06:23:15