中国EV市場の15年:販売データのEEMD分析からの知見
Fifteen years of China's electric vehicle market: Findings from an EEMD analysis of sales data (原題)
Wen Wen, Shuo Yang, Peng Zhou
🤖 gxceed AI 要約
日本語
中国のEV月次販売データ(2011〜2025年)をEEMDで分解し、長期・中期・短期の3成分に再構成した研究。長期成分は2016年頃に成長ピークを迎えた後は鈍化し、中期成分は産業計画や技術革新、政策強化と、短期成分は安全事故や政策転換、パンデミックと連動することを示す。市場インフラの長期支援、産業・技術計画の中期的誘導、安全懸念や政策不確実性への短期的対応を組み合わせた多層的政策枠組みを提言する。
English
This study applies Ensemble Empirical Mode Decomposition to China's monthly EV sales data (2011–2025), reconstructing short-, medium-, and long-term components. Long-term growth peaked around 2016 and moderated thereafter; medium-term cycles align with industrial plans, technology breakthroughs, and policy stringency, while short-term fluctuations track safety incidents, policy shifts, and the pandemic. The authors propose a multi-scale policy framework spanning infrastructure support, industrial guidance, and consumer-concern measures.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本ではEV普及が停滞する中、中国の販売波形を政策・技術・事故イベントと対応づける本手法は、補助金・規制のタイミング設計や普及施策の効果検証に応用可能。日本市場の普及曲線分析や政策評価の参照枠として読める。
In the global GX context
As global EV diffusion decelerates and policy support is recalibrated, this multi-scale decomposition offers a replicable template for linking sales cycles to policy, technology, and safety events. It complements disclosure-side work by showing how transition pathways can be empirically diagnosed rather than assumed.
👥 読者別の含意
🔬研究者:時系列分解により政策・技術・市場イベントと販売変動を対応づける実証手法の応用例として参考になる。
🏢実務担当者:中国EV市場の需要サイクルと政策転換のタイミングを把握し、調達・市場参入計画のシナリオ検討に活用できる。
🏛政策担当者:長期インフラ支援・中期産業計画・短期の安全・不確実性対策を組み合わせた多層的政策設計の根拠として参照可能。
📄 Abstract(原文)
Understanding the temporal evolution of electric vehicle (EV) markets is critical for designing effective diffusion pathways and supportive policy frameworks. This study conducts an Ensemble Empirical Mode Decomposition (EEMD) analysis of China's monthly EV sales data from January 2011 to December 2025, aiming to characterize market dynamics across multiple temporal scales and identify critical co-evolving events. The log-transformed sales series is decomposed into five stable intrinsic mode functions and one residual using EEMD, which are then reconstructed into short-, medium-, and long-term components through a period-based strategy. Variations in the reconstructed components are examined alongside representative policy, technology, and market events to interpret the historical context of China's EV market development. Results show that the long-term component maintains an upward trend, with its growth increment peaking around 2016 and moderating thereafter. The medium-term component exhibits periodic rises and falls, coinciding with industrial plans, technological breakthrough, and policy stringency. The short-term component captures seasonal fluctuations and local deviations that coincide with safety incidents, policy transitions, and the pandemic disruption. The findings suggest a multi-scale policy framework that emphasizes long-term support for market infrastructure, medium-term guidance on industrial and technological plans, and short-term measures to alleviate public concerns about EV safety and perceived policy uncertainty.
🔗 Provenance — このレコードを発見したソース
- primary_source https://doi.org/10.1016/j.esr.2026.102384first seen 2026-11-01 23:59:08
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