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USDA RELEASES FIRST ANNUAL NATIONAL RESOURCES INVENTORY
Sylvia Rainford (202) 720-2536
Ted Kupelian (202) 720-5776
WASHINGTON, July 11, 2003—The U.S. Department of Agriculture’s Natural Resources
Conservation Service (NRCS) today released results from its new annual National
Resources Inventory (NRI). The NRI provides comprehensive and statistically
reliable information on various natural resource conditions and trends on
nonfederal lands. Today’s announcement marks the first release of data since the
NRI began a transition from a 5-year to an annual survey.
“NRCS is conducting an annual inventory to respond to the need for more timely
natural resource information to support conservation policy development,” said
NRCS Chief Bruce Knight. “This data release provides national level estimates on
the status and trends for soil erosion, land use, and urbanization and
development.”
Results from the 2001 Annual NRI on cropland soil erosion show:
• Conservation efforts have reduced soil erosion substantially, from 3.1 billion
tons per year in 1982 to 1.8 billion tons per year in 2001.
• Between 1982 and 2001, sheet and rill erosion (the removal of layers of soil
from the land surface by the action of rainfall and runoff) dropped from 4.0
tons per acre per year to 2.7 tons per acre per year. Wind erosion dropped from
3.3 tons per acre per year to 2.1 tons per acre per year during the same period.
Additional results and information on the 2001 Annual NRI are available on the
Web at
http://www.nrcs.usda.gov/news/. This effort supports the Administration’s
Management Initiative for expanding e-Government by providing easy access to
useful information. Information on previous NRIs is available at
http://www.nrcs.usda.gov/technical/NRI/.
Results from the 2002 Annual NRI will be released in early 2004 and will include
additional national level results and some regional estimates. The spectrum of
results will continue to increase as the annual NRI process becomes fully
established over the next several years. Future NRIs will look at new topics,
including conservation benefits, grazing land condition and soil quality.
The NRI was conducted every 5 years between 1977 and 1997, providing the basis
for natural resource status and trend analysis since 1982. The annual NRI
continues to support long-term trend analyses, but will provide updates more
frequently than the previous inventory approach. NRCS has conducted the NRI in
cooperation with Iowa State University’s Center for Survey Statistics and
Methodology since the inventory’s inception.
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