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JICAにより2025年11月に実施されたイラン国別研修「地方自治体における３Rを含む廃棄物管理処理能力の向上」において、11月10日に「廃プラスチック問題とその国際政策動向」に関する講義・研修を実施した。参加者とは特に、プラスチック国際条約のINCでの議論およびイランの対応などについて意見交換を行った。日本語での発表を行い、ペルシャ語で逐次通訳が行われた。

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...

Aq’Qala county has been categorized as a high flood-prone area in Iran, and faced many major flood events in last two decades (e.g. in 2001, 2002, 2007, 2012, 2017, and 2019). The main aim of the current study is to produce and validate flood vulnerability rate (FVR) maps of this area relying on geospatial data. Vulnerability criteria were...

Climate change and overpopulation have led to an increase in water demands worldwide. As a result, land subsidence due to groundwater extraction and water level decline is causing damage to communities in arid and semiarid regions. The agricultural plain of Samalghan in Iran has recently experienced wide areas of land subsidence, which is...

Soil moisture is a critical component for Earth science studies, and Synthetic Aperture Radar (SAR) data have high potential for retrieving soil moisture using backscattering models. In this study, polarimetric SAR (PALSAR: Phased Array type L-band Synthetic Aperture Radar) data and polarimetric decompositions including span, entropy/H/alpha, and...

In this study, we measured and characterized the relative dielectric constant of mineral soils over the 0.3–3.0 frequency range, and compared our measurements with values of three dielectric constant simulation models (the Wang, Dobson, and Mironov models). The interrelationship between land cover and soil texture with respect to the dielectric...

Generally, the characterization of land surface roughness is obtained from the analysis of height variations observed along transects (e.g., root mean square (RMS) height, correlation length, and autocorrelation function). These surface roughness measurements are then used as inputs for surface dynamics modeling, e.g., for soil erosion modeling...

This paper presents a collective sensing approach that integrates imperfect Volunteered Geographic Information (VGI) obtained through Citizen Science (CS) tree mapping projects with very high resolution (VHR) optical remotely sensed data for low-cost, fine-scale, and accurate mapping of trees in urban orchards. To this end, an individual tree crown...

This draft report documents progress made on the “Low Carbon Technology Transfer Preparedness Database Project”, supported by the Ministry of Environment Japan in FY 2014. The report’s key focus lies on documenting subnational data gaps, sources and access issues whilst also describing contributions made to international processes on data and...

The Sustainable Cities Database is a new information resource to help sustainable development actors identify potential partner cities for low-carbon technology transfer projects. Spatial and Demographic Indicators: Spatial and demographic characteristics are described using a range of indicators, including population size and density, natural...