Level 1 Type	Level 1 Code	Level 2 Type & Code
Crop	10	Rice 10/11, Greenhouse 10/12, Other 10/13
Forest	20	Broadleaf 20/21, Needleleaf 20/22, Mixed 20/23, Orchard 20/24
Grass	30	Managed 30/31, Nature 30/32
Shrub	40
Wetland	50	Grass 30/51, Silt 90/52
Water	60	Lake 60/61, Pond 60/62, River 60/63, Sea 60/64
Tundra	70	Shrub 40/71, Grass 30/72
Impervious	80	High albedo 80/81, Low albedo 80/82
Bareland	90	Saline-Alkali 90/91, Sand 90/92, Gravel 90/93, Bare-cropland 10/94, Dry river/lake bed 90/95, other 90/96
Snow/Ice	100	Snow 100/101, Ice 100/102
Cloud	120

Level 1 Type	Level 1 Code	Level 2 Type & Code
Crop	10	Rice 10/11, Greenhouse 10/12, Other 10/13, Crop in urban 10/19
Forest	20	Broadleaf 20/21, Needleleaf 20/22, Mixed 20/23, Orchard 20/24, Forest in urban 20/29
Grass	30	Managed 30/31, Nature 30/32, Grass in urban 30/39
Shrub	40	Shrub in urban 40/49
Wetland	50	Grass 30/51, Silt 90/52, Wetland in urban 50/59
Water	60	Lake 60/61, Pond 60/62, River 60/63, Sea 60/64, Water in urban 60/69
Tundra	70	Shrub 40/71, Grass 30/72
Impervious	80	High albedo 80/81, Low albedo 80/82
Bareland	90	Saline-Alkali 90/91, Sand 90/92, Gravel 90/93, Bare-cropland 10/94, Dry river/lake bed 90/95, other 90/96, Bareland in urban 90/99
Snow/Ice	100	Snow 100/101, Ice 100/102
Cloud	120