Table 3.
Classification system for the QMA_LC30.
| Code | Class | Content |
|---|---|---|
| 1 | Cropland | Land used for crop cultivation includes paddy fields, irrigated and rainfed drylands, vegetable field, forage planting areas, greenhouse land, and areas primarily used for crop cultivation with occasional fruit trees and other economically valuable arbor trees. It also encompasses shrub-type economic crop areas such as tea gardens and coffee plantations. |
| 2 | Forest | Land covered by arbor trees with a canopy cover exceeding 30%, including deciduous broad-leaved forests, evergreen broad-leaved forests, deciduous coniferous forests, evergreen coniferous forests, and mixed forests. It also includes open forest land with a canopy cover ranging from 10% to 30%. |
| 3 | Grassland | Land covered by natural herbaceous vegetation with over 10% coverage, including grasslands, meadows, savannas, desert grasslands, and urban artificial grasslands, among others. |
| 4 | Shrubland | Land covered by shrubs with over 30% shrub cover, including mountain shrublands, deciduous and evergreen shrublands, as well as desert shrublands with over 10% cover in desert regions. |
| 5 | Wetland | Land situated at the interface between terrestrial and aquatic environments, characterized by shallow water or saturated soil, often supporting marsh or aquatic vegetation. This includes inland marshes, lake marshes, river floodplain wetlands, forest/shrub wetlands, peat marshes, mangroves, salt marshes, and similar areas. |
| 6 | Water | Land covered by bodies of liquid water, including rivers, lakes, reservoirs, ponds, and similar features. |
| 7 | Impervious surface | Land altered by human activities, including urban and rural areas, industrial and mining sites, and transportation infrastructure. This excludes contiguous green spaces and water bodies within developed areas. |
| 8 | Bareland | Land with vegetation cover of less than 10%, including deserts, sandy areas, gravel fields, bare rock, and saline-alkali land. |
| 9 | Snow or ice | Land covered by permanent snow, glaciers, and ice sheets, including high mountain glaciers and polar ice sheets. |