Slope alignment as 5 m grid

Slope directions as 5 m grid; based on the digital terrain model, derived from the latest Airborne Laser Scanning (ALS) aircraft.该数据集为5米栅格分辨率的坡向数据，基于由最新机载激光扫描（Airborne Laser Scanning, ALS）航空器采集获取的数字地形模型生成。