GeoAI · National-scale mapping

National Agricultural Land-Use Mapping for Vietnam

A deep-learning framework integrating multitemporal radar, optical and elevation data to map heterogeneous agricultural landscapes and test cross-year transferability.

Period
2020/2024 maps · 2026 publication
Status
Published research
Methods & technology
UNet++ · Sentinel-1 · Sentinel-2 · DEM · Semantic segmentation

Problem

Vietnam required more detailed and consistent national-scale agricultural land-use information to support agricultural monitoring, resource management and food-security research.

Context

The work integrated multitemporal Earth-observation and elevation data across heterogeneous agricultural landscapes and examined whether a trained model could transfer across years.

Approach

A UNet++ semantic-segmentation framework was applied using multitemporal Sentinel-1, Sentinel-2 and DEM inputs. The published study used an adaptive weighted combined loss function to address class imbalance.

My role

I contributed to the national-scale framework, cross-year transferability evaluation and resulting peer-reviewed publication.

Result

National agricultural land-use maps were produced for 2020 and 2024. The published study reports 15 land-cover categories and overall classification accuracies of 83.01 ± 1.37% for 2020 and 80.09 ± 0.76% for 2024.

Evidence

The method and results are documented in Remote Sensing (2026), DOI: 10.3390/rs18030430.

Potential applications

Agricultural monitoring, land-use planning, food-security research, crop-system analysis and national environmental reporting.