A5035202676- Research studies in Vietnam
- Land Use and Ecosystem Services
- Remote Sensing and LiDAR Applications
- Remote Sensing and Land Use
- Groundwater and Watershed Analysis
- Flood Risk Assessment and Management
- Species Distribution and Climate Change
- Environmental Changes in China
- Agricultural Innovations and Practices
- Ecology and Vegetation Dynamics Studies
- 3D Surveying and Cultural Heritage
- COVID-19 impact on air quality
- Soil erosion and sediment transport
- Landslides and related hazards
- COVID-19 Pandemic Impacts
- Plant and Fungal Species Descriptions
- Botany, Ecology, and Taxonomy Studies
- Soil and Land Suitability Analysis
- Environmental Quality and Pollution
- Geotourism and Geoheritage Conservation
- Maritime and Coastal Archaeology
- COVID-19 epidemiological studies
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Aeolian processes and effects
- Conservation, Biodiversity, and Resource Management
Thai Nguyen University
2020-2022
China University of Geosciences
2012-2013
This study investigates the effectiveness of gradient boosting decision trees techniques in estimating mangrove above-ground biomass (AGB) at Can Gio biosphere reserve (Vietnam). For this purpose, we employed a novel gradient-boosting regression technique called extreme (XGBR) algorithm implemented and verified AGB model using data from field survey 121 sampling plots conducted during dry season. The dataset fuses Sentinel-2 multispectral instrument (MSI) dual polarimetric (HH, HV) ALOS-2...
This study applies machine learning models, remote sensing, and Geographic Information Systems (GIS) to optimize disaster risk reduction measures for communities in the northern mountainous region of Vietnam. The analysis results indicate that factors such as terrain, climate, population density, infrastructure play a crucial role determining risks. Machine models are employed classify predict risks landslides, flash floods, storms, achieving an accuracy up 85%. Mitigation resettlement,...
This paper presents the results of applying GIS–MCA–AHP integrated model in landslide susceptibility assessment for warning dangerous areas Tan Uyen district Vietnam. The main research method is a Multi-criteria that based on hierarchical analysis process and combination GIS spatial model. Research have shown four groups factors causing landslides including hydrogeological factors, topographic geomorphological surface cover human impact factors. map has identified 22.69% area (204.96 km2)...
In the mining industry, conventional methods such as GPS and total station technology are used most extensively for data collection in return to compute volume of extracted materials (ore waste). situation where ore body is bigger size, changes dynamically, use method measure not practicable economically viable because workload involved, precision accuracy survey safety workers. this paper a work flow heap measurement by using 3D laser scanning technique acquire point cloud was introduced....
Abstract The model was constructed based on GIS spatial analyses, combined with Analytic Hierarchy Process (AHP) and Multi-Criterion Analysis method (MCA). data gathered for the study were mainly from remote-sensing images, statistical surveys. Field experiments conducted in Trinh Tuong Commune, Bat Xat District, Lao Cai province. This is a typical remote mountainous region of Vietnam which flash floods often occur. analyzes evaluates six primary factors that incite flood, namely:...
Abstract This study examines the conservation and biodiversity management efforts in Lang Son province, Vietnam, context of global environmental concerns. Under Decision No 2447/QD-UBND, province’s Special-use Forest Planning focuses on conserving areas such as Huu Lien Nature Reserve Mau special-use forests. initiative covers a substantial planned land area to sustain foster rural development up 2030. Recent surveys indicate notable increase plant species within these areas, from 842 2017...
Hoang Lien National Park has a total area of 68569ha, located at an altitude above sea 1000-3000m in the territory two provinces Lai Chau and Lao Cai Vietnam. It diversity flora with 3252 species (including 775 endemic 236 endangered species), belonging to 1126 genera, 230 families 6 different divisions. Due mountainous terrain, division Park’s vegetation is thus clearly characterized by high elevations. We have studied distribution characteristics elevations Vietnam general survey...
This research has used the L-band radar from ALOS-2 PALSAR-2 and field work data for evaluation of seasonal effects backscattering intensity on retrieval forest biomass in tropics.The seasonality HH, HV polarizations SAR were analyzed.The dry season polarization could explain 61% this study region.The was highly sensitive to compared rainy intensity.The acquired with humid wet canopies not very situ biomass.Strong dependence estimates acquisition confirmed that choice right is important...
The article presents an overview of 3S technology application studies and prospects for in disaster risk management the northern mountainous region Vietnam.The study uses document review method builds experimental research model by GIS spatial analysis method, data mining from satellite images, combined with positioning equipment.3S shows great promise management, assessment warning areas, especially online based on artificial intelligence smart applications mobile phones.This is a direction...
Lai Chau is a typical mountainous province of Vietnam, with natural area 9068.78 km 2 , this that frequently occurs flash floods.This paper presents the results application Satellite images, combining GIS -AHP -MCA integration method to create zoning map and warn floods in province.The study indicate analyses appraisals over 6 primary factors incite flood, including characteristics geomorphology, properties soils, types forests fractional vegetation cover, slope local drainage basins,...
Bài báo tập trung nghiên cứu đánh giá hiện trạng công tác quản lý nước mặt trên địa bàn tỉnh Yên Bái để từ đó đưa ra các giải pháp phù hợp nhằm bền vững tài nguyên của Tỉnh. Với phương được sử dụng như: thu thập, phân tích và xử dữ liệu thống kê, điều tra khảo sát thực tế, đã cho thấy mặc dù chất lượng Tỉnh còn khá tốt, xong tại một số vị trí (như: suối Tuần Quán, phường Ninh; Nung, Pú Trạng, thị xã Nghĩa Lộ…) xuất tình ô nhiễm bởi hữu cơ với chỉ tiêu (TSS, BOD5) vi phạm Quy chuẩn kỹ thuật...
The Etropy problem has been widely applied in the assessment and analysis of landscape ecology. Research results are just at indicators, not able to describe spatial distribution landscape. In this paper, we will simulate application based on a GIS. A GIS is used store information layers structure, indicator map-layer assessment. This new research direction, be simulated by evaluation map. have Sa Pa area - one Vietnam's most mountainous district. shown diversity identification conserved.
Information entropy has been widely applied to assess and analyze landscape ecology. Results from previous studies were the indicators only, not able describe spatial distribution of landscape. In this article, application results information in assessment ecological landscapes Sa Pa district, one highest mountainous area Vietnam, based on GIS (Geographical System) simulated. technology was used store layers structure, indicator analysis, a map-layer assessment. simulated by map evaluation....
Nghiên cứu thể hiện cách tiếp cận tư liệu viễn thám để phân loại lớp phủ mặt đất huyện chợ Đồn, tỉnh Bắc Kạn dựa vào phương pháp mạng nơron nhân tạo - Neural Net. kết hợp giữa có giám sát trên cơ sở tệp mẫu huấn luyện, với thu tập tài và điều tra ngoại nghiệp. Qua quá trình giải đoán ảnh thám, hệ thống bề Chợ Đồn được chia thành 5 lớp: hoa màu, lúa; dân cư; đường; rừng; nước. Kết quả xây dựng bản đồ trạng bằng Landsat 8, độ chính xác của đánh giá 2 thông số là tổng Kappa: đạt 99,0458% Kappa...