The forest map is a global raster data layer with a resolution of 5 arc minutes. Each pixel in the map contains a value representing the percentage of forest area. The percentage data of forest area in the Heilongjiang River Basin was obtained through clipping. The data is sourced from the Food and Agriculture Organization and IIASA（ https://data.apps.fao.org/map/catalog/srv/eng/catalog.search#/metadata/46046c40 -7575-11db-b9b2-000d939bc5d8), spatial coordinate system WGS 84
中心点纬度：48.833332
中心点经度：124.375
最大缩放级别：10
最小缩放级别：1
Current zoom level：5