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Microplastic pollution in tropical urban rivers has become an increasing environmental concern due to rapid urbanization, inadequate waste management, and hydrological transport processes. This study investigated the occurrence, characteristics, and spatiotemporal distribution of microplastics in the Can Tho River, Vietnam, along an urban– peri...

Salinity intrusion has become a critical threat to agricultural stability and water resource management in the Vietnamese Mekong Delta (VMD), particularly in coastal regions. This study evaluates the efficacy of the Long Short-Term Memory (LSTM) neural network, a sophisticated deep learning (DL) architecture, for predicting salinity concentrations...

Single-use plastic waste poses significant environmental challenges, particularly through microplastic pollution in aquatic ecosystems. In this study, a bio-carrier was fabricated from recycled single-use plastic waste, and its performance was evaluated in a laboratory-scale moving bed biofilm reactor combined with membrane filtration (MBBR-MBR)...

Drought is a recurrent hazard in the Vietnamese Mekong Delta (VMD), with major implications for agriculture, water resources, and rural livelihoods. This study assesses drought variability in Kien Giang Province, Vietnam, from 1992 to 2024 using two multiscale indicators: the Multivariate Standardized Precipitation Index (MSPI) and the Multivariate...

Suspended sediment concentration (SSC) and sediment flux (SF) are critical indicators of sediment delivery in the Lower Mekong and underpin deltaic geomorphic stability and ecosystem services. With recent evidence of declining sediment supply caused by upstream regulation and intensive in-channel extraction, there is a pressing need for...

The Vietnamese Mekong Delta (VMD), a cornerstone of national food security, is increasingly affected by salinity intrusion arising from the combined influences of upstream hydropower development, climate change, and sea-level rise. Despite growing attention to this issue, the long-term hydrological mechanisms shaping these changes remain...

Climate change and river flow alterations in the Mekong River have significantly exacerbated drought conditions in the Vietnamese Mekong Delta (VMD). Understanding the temporal dynamics and propagation mechanisms of drought, coupled with the compounded impacts of human activities, is crucial. This study analyzed meteorological (1992–2021) and...

ベトナムにおいて、2023年には推定438-441万トンの木質ペレットが製造された。 中部の工場はほぼ原木のみで製造。北部・南部の工場の多くは原木・残渣の両方を使用 原木の調達地域は、北部・中部（人工林面積が大きい）から南部までの全域。南部ではゴムや果樹が重要な資源となっていると考えられる 原木調達先の一部は天然林の減少がおきている地域（北部、中央高原）であるため 、違法伐採・森林減少リスクを回避するためには、調達する原木に天然木が混入していないか確認することが望ましい

In Vietnam, where domestic wastewater significantly contributes to water pollution, innovative treatment solutions are urgently needed. This study assesses the effectiveness of subsurface horizontal flow constructed wetlands (CWs) for decentralized domestic wastewater treatment, focusing on systems planted with Napier grass (Pennisetum purpureum)...

The Vietnamese Mekong Delta (VMD) is undergoing increasing disruption to its sediment–water continuum due to upstream hydropower development, regional land use change, and climate variability. Suspended sediment concentration (SSC) and streamflow are key indicators of the delta’s ecological stability and agricultural productivity, yet their recent...