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Methane is a potent, short-lived climate pollutant responsible for nearly 0.5°C of global temperature rise. Though it remains in the atmosphere for about 12 years, its climate impact is 86 times stronger than carbon dioxide over 20 years, making methane mitigation one of the most effective strategies for tackling climate change. The waste sector...

　本報告書は、令和７年度環境省「途上国における優れた脱炭素･低炭素技術の普及展開に向けた制度構築等支援委託業務」の業務報告書である。 　本業務は、二国間クレジット制度（JCM）を活用した優れた脱炭素・低炭素技術の展開及びJCM プロジェクトを契機とした横展開や普及拡大を更に強化していくため、途上国の長期戦略の策定支援、NDC 更新・実施支援や、脱炭素都市の形成に向けた取り組み支援を行うとともに、それらの国・ 都市の市場の状況を踏まえ、途上国や都市における新たな制度・規制等の構築や既存制度の改善に着手することを目的として、以下の４課題を行った。 I．各国のNDC 更新並びに各国等の長期戦略策定等を見据えたAIM を活用したシナリオ分析及び脱炭素化に向けた戦略・制度構築支援 II...

Sunda clouded leopard conservation requires understanding key species traits. Using photo-identification, we estimated lifespans from minimum residence times, documenting the oldest wild individual known to date—a 6.51-year-old female. We discuss methodological limitations in female detectability and transient individuals in the population and...

Agriculture lies at the centre of the climate change challenge, simultaneously functioning as a highly climate-vulnerable sector and a significant contributor to greenhouse gas emissions through land use, crop production, livestock, and food systems. This presentation examines the climate change–agriculture nexus through a comparative analysis of...

From "Islands of Excellence" to a "Sea of Change": How ASEAN's Secondary Cities are Localising the SDGs in the region As the ASEAN region rapidly urbanises, the focus often falls on its mega-cities. However, a quiet transformation is underway in the region’s secondary cities -- the agile urban centres that are proving to be fertile ground for...

Brazil and Japan are key partners that share common visions, including multilateral international cooperation, the Bioeconomy and Satoyama Initiative, the decarbonization of internal combustion engine vehicles, etc. In the context of a rapidly changing international situation, it is crucial for both countries' sustainable development, including...

The outcome of the first Global Stocktake (GST1), concluded at COP28, is expected to firmly inform countries’ next nationally determined contributions (NDCs), due in early 2025, so as to ensure that global efforts are on track to achieve the goals of the Paris Agreement. Taking Malaysia as a case study country, the objective of this study is to...

森林リスク・コモディティのサプライチェーンマネージメントアプローチによる世界の森林減少抑制というEUDRの目的は素晴らしい。しかしその手法（e.g. 地理的位置情報の要求）はサプライチェーンからの小農の排除につながることも懸念されている。またそもそも、その手法は世界の森林減少抑制に効果を与える手法として効率的・効果的なのかという疑問もある。 一方、一部の生産国政府はEUDRを機会ととらえ、国レベルでのシステム変革を進めている。国レベルでの取り組みが最終的には森林減少、地域社会のエンパワーメントにつながる可能性もある。

IGES Joint Crediting Mechanism (JCM) Database provides detailed information on the JCM methodologies, projects, and JCM feasibility studies to be utilized for research and development of JCM project. The JCM is being implemented under bilateral cooperation between Japan and 29 partner countries: Mongolia, Bangladesh, Ethiopia, Kenya, Maldives, Viet...

The year 2023 marked a concerning milestone in climate history with the global average temperature being 1.45 ± 0.12°C above the pre-industrial average. The Global Stocktake at COP28 showed that the projected temperature rise is expected to be between 2.1 - 2.8°C even if nationally determined contributions (NDCs) of all countries are fully achieved...