混交林 16 Water bodies 水体 17 Herbaceous wetland 草本湿地 18 Wooden wetland 林泽 19 Barren or sparsely vegetated 贫瘠或稀疏植被 20 Herbaceous tundra 草本苔原 21 Wooded tundra 木本苔原 22 Mixed tundra 混合型苔原 23 Bare ground tundra 裸地苔原 24 Snow or ice 冰或雪 USGS24类分类标准©...