Natural Resources Inventories 1982 1987 1992 1997 2002 and 2007 Natural Resources Inventories were completed by NRCS USDA Provides data about the status and condition of our soil water and related resources Illinois data was collected from 10 000 160 acre sample blocks Data available by State Major land resource area County Watershed Illinois acreage in 1982 35 137 200 acres 100 Agricultural land 31 314 100 89 1 Cropland 24 727 400 acres 70 3 Forestland 3 429 400 acres 9 8 Pastureland 3 157 300 acres 9 0 Resource data elements Initially 22 including Land use Sheet and rill erosion rates amounts and acres Conservation treatment needs Illinois has 500 or more soil series Basic data Used by NRCS for current conservation programs and future programs Information helpful to Soil and water districts Governmental agencies Planners Individual interested in land use and conservation treatment Illinois acreage in 1982 Other land 3 823 000 acres 10 9 Urban and built up 1 846 400 5 2 Rural uses 869 800 acres 2 4 Minor uses 761 400 acres 2 2 Small water areas 345 500 acres 1 1 1 Acres in each land capability class 31 m acres of agricultural land Class I 4 2 m acres Class II 16 8 m acres Class III 5 8 m acres Class IV 2 1 m acres Class V 0 2 m acres Class VI 1 8 m acres Acres in each land capability class 31 m acres of agricultural land Class VII 0 9 m acres Class VIII 0 5 m acres Illinois Cropland Acreage 24 727 000 Land use dominates each category Cropland dominates the following categories I IIe IIw IIs IIIe IIIw IIIs IVe IVw IVs Forest dominates Vw Forest pasture and cropland are evenly split VIe VIw VIs Forestry dominates VIIe VIIw VIIs Minor uses VIII Row crops 20 464 000 Close grown 2 100 000 acres oats wheat barley Double cropped 806 000 acres soybeans wheat Horticulture 40 000 acres Hayland 493 000 acres Other crops 828 000 acres Acres of cropland above and below T in 1985 T 14 5m T 2T 5 5m 2T 4 7m 0 8m I 3 5m II 1 0m III 0 2m IV VII 0 1m I 2 1m II 1 6m III 1 0m IV VII 3 1m I 9 0m II 1 8m III 0 5m IV VII Erosion rates by land capability class I 3 8 tons ac II 5 2 tons ac IIe 15 4 tons ac III 9 6 tons ac IIIe 22 6 tons ac IV 18 9 tons ac IVe 32 2 tons ac V 3 3 tons ac VI 32 0 tons ac VIe 44 6 tons ac VII 34 3 tons ac VIIe 57 5 tons ac 2 Land Cover Use changes 1982 to 1997 Cropland 24 727 500 714 000 acres Pastureland 3 158 400 140 000 acres Forestland 3 430 400 199 000 acres Developed land including transportation land 2 688 000 492 000 acres Minor farmsteads farm structures field wind breaks barren land and marshland 761 400 110 000 acres Illinois Erosion and Land Cover Use changes 1982 to 1997 Erosion decreased on rural land from 6 1 tons ac 1982 to 4 0 tons ac 1997 Cropland acres exceeding T dropped from 9 9 m acres to 6 4 m The gross erosion from water wind not calculated in Illinois on rural land decreased from 194 7 to 125 m tons Between 1982 and 1997 IL converted 406 000 acres of 21 100 000 acres of prime farmland to other land uses CRP land from went from 0 to 726 000 acres Conservation tillage changes 1982 to 1997 Prime farmland 21 043 000 acres or 66 of agricultural land total 78 of IL cropland is prime farmland 89 1 of IL prime farmland is in cropland Only TX and KS has more acres of prime farmland but a lower percentage of their agricultural land total USA has 334 m acres of prime farmland Conservation tillage acreage on cropland 8 3m acres or 33 1982 and 12 1 m acres or 52 of cropland in 1997 No till 0 8 m acres in1982 and 7 0 m acres 28 in 1997 Illinois and USA Illinois Wetlands Irrigated land in IL 1982 176 000 acres 1997 202 000 acres Irrigated land in USA 1982 61 7 m acres 1997 62 2 m acres 1982 1 950 000 1997 1 920 000 lost of 30 000 acres 3
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