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地球規模で進む気候変動は、気象の激甚化、そして洪水や干ばつなどの自然災害を世界各地で引き起こし、新たな人道危機を生み出している。すでに社会基盤が脆弱化している紛争下の人々にとって、気候変動はリスクを増幅させる要因にもなっている。気候変動の負の影響が人類の発展や国際政治・経済の安定を阻むこの気候危機とも呼ばれる状況は、「気候安全保障」という視点から捉えることができる。人間の安全保障を掲げて開発援助に注力する日本にとって、気候危機下の人道支援の現状を分析・評価することは、今後の外交政策を展望する上で必須の課題だと言えるだろう。 気候安全保障は「日本国内に直接生じる安全保障リスク」と「日本国外で生じる安全保障リスクから波及して生じる日本の安全保障リスク」の２つに分類できる。本稿では...

The escalating impacts of climate change necessitate a focused analysis of flood vulnerability in ecologically fragile and densely inhabited mountain areas, particularly in the Himalayan region. This study concentrates on the Kullu Valley within the Beas Basin, Himachal Pradesh, India, a locale characterized by its intricate terrain and dynamic...

Forests play a vital role in maintaining ecological balance and provide numerous benefits. The monitoring and managing of large-scale forest plantations can be challenging and expensive. In recent years, advancements in remote sensing technologies, such as lightweight drones and object-oriented image analysis, have opened up new possibilities for...

This study employed an advanced geospatial methodology using the Google Earth Engine (GEE) platform to assess soil erosion in the Satluj Watershed thoroughly. To achieve this, the Revised Universal Soil Loss Equation (RUSLE) model was integrated into the study, which was revealed through several analytical tiers, each with a unique function. The...

Globally, mangroves have been promoted to protect the coastal ecosystems and human settlements against weather vagaries including climate change impacts. However, climate change can also affect the mangrove ecosystems, affecting their ability to mitigate losses and damages caused by climate change. Recognizing the need to understand the impact of...

India’s national government has offered strong support for the development of green hydrogen as part of the clean energy transition. However, much of the actual progress in this transition will depend on subnational governments. This paper argues India’s subnational governments have significant potential to capitalise on diverse natural resource...

The construction of large-scale infrastructure projects like dams can substantially alter local hydrological systems, prompting concerns about their impacts on river water levels and discharge. This study was undertaken in response to the compelling need to investigate and analyze the potential implications of water scarcity, particularly within...

This study utilises a comprehensive, multi-layered approach to assess flooding susceptibility in a specific area, integrating diverse environmental datasets such as JRC Global Surface Water, Landsat 8 images, and SRTM elevation data. Employing the GEE FMA, a powerful tool leveraging Google Earth Engine capabilities, the analysis covers water...

Water governance (WG) plays a crucial role in steering integrated water resources management (IWRM) toward the fulfillment of the Sustainable Development Goals (SDGs), particularly in developing regions. Despite this, substantial challenges hinder effective WG implementation across Asia. This study systematically reviews WG literature in Asia from...

Coastal aquifers are hydraulically connected to the sea and a storm (cyclone/hurricane) can disrupt the surface water-groundwater (SW-GW) interaction process which is largely unexplored. Thus, this study aims to explore the impact of storm surges (both positive and negative) on coastal aquifers, focusing on pollutant mobilization, groundwater level...