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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...

Grassland degradation poses a serious threat to biodiversity, ecosystem services, and human well-being. In this study, we investigated grassland degradation in Zhaosu County, China, between 2001 and 2020, and analyzed the impacts of climate change and human activities using the Miami model. The actual net primary productivity (ANPP) obtained with...

This derivative regional analysis covers the East Asian region consisting of China, Hong Kong, Japan, Macau, Mongolia, North Korea, South Korea, and Taiwan. While the Climate Vulnerability Monitor 3 rd Edition (Climate Vulnerable Forum & V20 2022) provides a global overview of climate vulnerability with national-level data, the emphasis of this...

Assessing heat-related health risks is important for sustainable urban development. Although fine-scale information (e.g., at the community/neighborhood or city block level) is ideal for identifying and mitigating these risks, previous studies have preferred to work at the administrative unit level. High-resolution Local Climate Zone (LCZ) maps, i...

Despite suffering significantly from the adverse impacts of climate change and human-induced hazards, many people at risk deliberately choose not to migrate from hazard-prone areas in coastal Bangladesh. As many of them encounter significant challenges in maintaining their livelihoods, ascertaining how and under what circumstances voluntary non...

Accurate urban morphology provided by Local Climate Zones (LCZ), a universal surface classification scheme, offers opportunities for studies of urban heat risk, urban ventilation, and transport planning. In recent years, researchers have attempted to generate LCZ maps worldwide with the World Urban Database and Access Portal Tools (WUDAPT). However...

Illumination variations in non-atmospherically corrected high-resolution satellite (HRS) images acquired at different dates/times/locations pose a major challenge for large-area environmental mapping and monitoring. This problem is exacerbated in cases where a classification model is trained only on one image (and often limited training data) but...

In this novel and integrated MAR approach, an offsetting scheme under the concept of payment for ecosystem services (PES) is used to enhance groundwater recharge along the Shirakawa River in Kumamoto Prefecture, Japan. The scheme gives a cash incentive to farmers who pond their abandoned rice fields for groundwater recharge. For a specified period...

Increasing resilience to natural hazards and climate change is critical for achieving many Sustainable Development Goals (SDGs). In recent decades, China has experienced rapid economic development and became the second-largest economy in the world. This rapid economic expansion has led to large-scale changes in terrestrial (e.g., land use and land...

Lichen is an important food source for caribou in Canada. Lichen mapping using remote sensing (RS) images could be a challenging task, however, as lichens generally appear in unevenly distributed, small patches, and could resemble surficial features. Moreover, collecting lichen labeled data (reference data) is expensive, which restricts the...