TABLE A-3. LAND USAGE KEY 1 Mostly cropland 2 Cropland and grazing land 3 Cropland with pasture, woodland, and forest 4 Irrigated land 5 Woodland and forest with some cropland and pasture 6 Forest and woodland; grazed 7 Forest and woodland; mostly ungrazed 8 Subhumid grassland and semiarid grazing land 9 Open woodland; grazed 10 Desert shrubland; grazed 11 Desert shrubland; mostly ungrazed 12 Alpine meadows, mountain peaks above timberline 13 Swamp 14 Marshland 15 Moist tundra and muskeg
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