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National Development Results Tables

2007 National Resources Inventory

Estimates presented here are based upon the latest information from the National Resources Inventory (NRI). The NRI is a longitudinal sample survey based upon scientific statistical principles and procedures. It is conducted by the U.S. Department of Agriculture’s Natural Resources Conservation Service (NRCS), in cooperation with Iowa State University’s Center for Survey Statistics and Methodology. These results are based upon the 2007 NRI, which provides nationally consistent data for the 25-year period 1982–2007. Current estimates cover the contiguous 48 states. Future estimates will include Hawaii, Alaska, and the Caribbean.

Margins of error are reported for each NRI estimate and must be considered at all scales of analysis. The margin of error is used to construct the 95 percent confidence interval for the estimate. The lower bound of the interval is obtained by subtracting the margin of error from the estimate; the upper bound is obtained by adding the margin of error to the estimate. A 95 percent confidence interval means that in repeated samples from the same population, 95 percent of the time the true underlying population parameter will be contained within the lower and upper bounds of the interval. In the following tables, if there are instances where the margin of error is greater than or equal to the estimate, they are displayed in italics indicating that the confidence interval includes zero and the estimate should not be used.

 

Table 12. Developed Land, by Type and Year, in Thousands of Acres, with Margins of Error
Year Large Urban and Built-Up Areas Small Built-Up Areas Rural Transportation Total Developed Land
1982 45,036.0
±794.5
4,672.9
±82.6
21,255.2
±152.1
70,964.1
±768.3
1987 50,483.4
±875.0
5,071.1
±84.4
21,316.5
±148.6
76,871.0
±837.6
1992 57,096.5
±978.5
5,378.0
±95.8
21,427.8
±147.0
83,902.3
±960.8
1997 66,885.0
±1,046.2
6,056.6
±90.8
21,637.3
±150.9
94,578.9
±993.5
2002 75,268.3
±1,267.4
6,812.9
±126.8
21,949.6
±119.9
104,030.8
±1,274.8
2007 81,809.4
±1,418.1
7,242.4
±201.0
22,199.4
±128.1
111,251.2
±1,499.4

 

Table 13. Sources of Newly Developed Land, in Thousands of Acres, with Margins of Error
Year Cropland Pastureland Rangeland Forest Land All Other Total
1982 to 1987 1,745.8
±103.2
932.0
±70.5
766.9
±98.3
2,504.4
±104.7
159.1
±29.3
6,108.2
±185.2
1987 to 1992 1,921.5
±92.4
1,249.7
±80.5
896.1
±130.0
2,987.4
±110.1
204.7
±22.0
7,259.4
±218.0
1992 to 1997 2,773.1
±129.5
1,833.6
±117.2
1,089.7
±142.2
4,629.2
±150.1
452.3
±51.1
10,777.9
±290.6
1997 to 2002 2,041.0
±162.6
1,643.0
±147.8
1,430.0
±279.0
4,316.1
±195.2
280.9
±69.4
9,711.0
±524.2
2002 to 2007 1,657.3
±138.3
1,310.2
±182.9
1,112.3
±176.5
3,236.1
±131.0
181.9
±28.7
7,497.8
±378.8
1982 to 2007 11,117.5
±403.8
6,845.0
±338.0
5,201.0
±544.1
17,083.5
±417.1
1,107.3
±110.2
41,354.3
±991.3
Notes:
• Cropland includes cultivated and non-cultivated cropland.
• All Other includes other rural land, water areas, Federal land, and Conservation Reserve Program (CRP) Land. CRP was not implemented until 1985.

 

Table 14. Net Change in Developed Land, by Type, in Thousands of Acres, with Margins of Error
Year Large Urban and Built Up Small Built-Up Rural Transportation Total Developed Land
1982 to 1987 5,447.4
±191.2
398.2
±37.0
61.3
±28.8
5,906.9
±186.2
1987 to 1992 6,613.1
±212.9
306.9
±51.0
111.3
±24.2
7,031.3
±221.6
1992 to 1997 9,788.5
±291.9
678.6
±72.3
209.5
±32.4
10,676.6
±298.2
1997 to 2002 8,383.3
±523.4
756.3
±84.0
312.3
±58.1
9,451.9
±523.9
2002 to 2007 6,541.1
±324.2
429.5
±86.7
249.8
±57.6
7,220.4
±377.3
1982 to 2007 36,773.4
±911.4
2,569.5
±198.2
944.2
±116.9
40,287.1
±984.0

 

Table 15. Prime Farmland, by Land Cover/Use and Year, in Thousands of Acres, with Margins of Error
Year Cropland Pastureland Rangeland Forest Land All Other Total
1982 229,377.8
±1,668.9
37,014.0
±774.0
20,034.4
±574.3
46,871.4
±560.2
6,134.6
±125.4
339,432.2
±1,998.2
1987 224,638.9
±1,586.1
36,495.9
±674.3
19,335.5
±591.8
47,285.1
±567.9
9,582.4
±208.8
337,337.8
±2,035.3
1992 215,326.4
±1,437.7
36,632.6
±692.5
18,943.8
±581.1
47,654.8
±584.1
16,103.3
±327.3
334,660.9
±1,901.8
1997 211,917.2
±1,464.4
35,452.6
±664.2
19,331.0
±594.0
48,664.5
±588.3
15,783.9
±273.5
331,149.2
±1,907.2
2002 207,168.2
±1,264.5
35,867.6
±781.9
19,734.2
±674.6
49,855.1
±805.4
15,321.8
±456.0
327,946.9
±1,800.2
2007 202,425.6
±2,055.8
37,237.4
±945.8
20,126.7
±1,063.2
50,170.5
±1,220.3
15,698.6
±603.7
325,658.8
±2,036.2
Notes:
• Cropland includes cultivated and non-cultivated cropland.
• All Other includes other rural land and Conservation Reserve Program (CRP) land. CRP was not implemented until 1985.

 

Table 16. Net Change in Prime Farmland, by Land Cover/Use and Year, in Thousands of Acres, with Margins of Error
Year Cropland Pastureland Rangeland Forest Land All Other Total
1982 to 1987 -4,738.9
±356.7
-518.1
±319.3
-698.9
±96.8
413.7
±181.6
3,447.8
±207.3
-2,094.4
±164.4
1987 to 1992 -9,312.5
±417.6
136.7
±221.2
-391.7
±108.6
369.7
±159.9
6,520.9
±244.6
-2,676.9
±277.3
1992 to 1997 -3,409.2
±297.4
-1,180.0
±315.2
387.2
±144.4
1,009.7
±213.4
-319.4
±190.5
-3,511.7
±185.8
1997 to 2002 -4,749.0
±779.5
415.0
±486.8
403.2
±216.1
1,190.6
±252.1
-462.1
±293.5
-3,202.3
±469.2
2002 to 2007 -4,742.6
±993.2
1,369.8
±725.4
392.5
±330.9
315.4
±406.2
376.8
±226.9
-2,288.1
±567.7
1982 to 2007 -26,952.2
±1,420.1
223.4
±1,053.7
92.3
±677.4
3,299.1
±943.9
9,564.0
±620.6
-13,773.4
±826.7
Notes:
• Cropland includes cultivated and non-cultivated cropland.
• All Other includes other rural land and Conservation Reserve Program (CRP) land. CRP was not implemented until 1985.
• Instances where the margin of error is greater than or equal to the estimate are displayed in italics indicating that the confidence interval includes zero and that the estimate should not be used.

 

Table 17. Sources of Newly Developed Land that was Prime Farmland, in Thousands of Acres, with Margins of Error
Year Cropland Pastureland Rangeland Forest Land All Other Total
1982 to 1987 1,064.6
±84.1
294.9
±34.9
49.1
±22.4
383.0
±45.2
28.9
±6.3
1,820.5
±112.6
1987 to 1992 1,077.7
±88.4
397.9
±47.3
46.8
±14.3
449.7
±44.7
38.6
±9.6
2,010.7
±116.1
1992 to 1997 1,625.6
±95.8
606.5
±59.9
73.8
±18.4
690.7
±54.4
111.5
±14.1
3,108.1
±137.4
1997 to 2002 1,139.3
±125.6
552.2
±82.6
117.1
±118.4
681.3
±75.6
65.2
±14.0
2,555.1
±223.1
2002 to 2007 905.1
±100.0
438.1
±113.9
87.7
±24.8
550.4
±64.6
54.6
±8.4
2,035.9
±153.6
1982 to 2007 6,232.1
±281.6
2,143.3
±198.0
341.2
±159.7
2,609.0
±159.3
248.2
±23.1
11,573.8
±403.5
Notes:
• Cropland includes cultivated and non-cultivated cropland.
• All Other includes other rural land and Conservation Reserve Program (CRP) Land. CRP was not implemented until 1985.
• Instances where the margin of error is greater than or equal to the estimate are displayed in italics indicating that the confidence interval includes zero and that the estimate should not be used.

Farm Production Region Results Tables

 

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