. Critical trends in Illinois ecosystems. Ecological assessment (Biology); Environmental impact analysis; Nature; Pollution; Conservation of natural resources; Environmental quality. Critical Trends in Illinois Ecosystems CHAPTER TWO State^vide Land Cover. 1=* â Illinois'grassland is primarily rural and is concentrated in the northivestern and southwestern areas of the state. Illinois counties range in size from 110,190 acres in Putnam County to 759,040 in McLean County; the median is 329,377 acres. The typical Illinois county has nearly 190,000 acres of cropland, more than 56,000 acres of rur
. Critical trends in Illinois ecosystems. Ecological assessment (Biology); Environmental impact analysis; Nature; Pollution; Conservation of natural resources; Environmental quality. Critical Trends in Illinois Ecosystems CHAPTER TWO State^vide Land Cover. 1=* â Illinois'grassland is primarily rural and is concentrated in the northivestern and southwestern areas of the state. Illinois counties range in size from 110,190 acres in Putnam County to 759,040 in McLean County; the median is 329,377 acres. The typical Illinois county has nearly 190,000 acres of cropland, more than 56,000 acres of rural grassland, approximately 42,000 acres of forested and wooded land, less than 9,000 acres of wetland and approximately 11,000 acres of open water. It also has about 8,000 acres of urban or other built-up land and roughly 50 acres of barren land. The following provides statewide information on seven land cover categories: cropland, grass- land, forest/woodland, wetland, urban/built-up land, open water, and barren/exposed land. Figure 4 illustrates the land cover of the state as a whole. CROPLAND >â All 102 Illinois counties have cropland; the con- centration ranges from in Cook County to in Piatt County. ⢠Eight counties have more than 80% of their acreage in crops. ⢠Twent)'-two counties have 70-79% of their acreage in crops. ⢠Twenty-eight counties are 60-69% crop covered. >â On average, Illinois counties plant of their acreage in crops. >- Nearly 91% or million acres of the state's cropland is in row crops, primarily corn and soybeans. ⢠Small grains account for most of the remaining 9% of cropland. ⢠Orchards cover only about 16,000 acres. GRASSLAND *- Illinois'gi-assland is primarily rural. ⢠About 91% of the state's grasses are rural incluiling pastures, rural roadsides, hay/ alfalfa, etc. Only 9% of the grassland is located in urban areas, primarih' residential areas, air- ports, golf courses and other open spaces. E F
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