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What Is This Indicator, and Why Is It Important? This indicator
will describe how much grasslands and shrublands is devoted to six major
land uses: livestock raising, rural residences, oil and gas development
and mining, Conservation Reserve Program (CRP) lands (see below), protected
areas (see below), and high-intensity recreation. Because grasslands
and shrublands may be used for other purposes as well, the total acreage
eventually reported here would not equal the total reported in the Area of Grassland and Shrubland Extent
indicator.
Within grasslands and shrublands, differing land uses create
very different landscapes. Each of the land uses identified
here is associated with specific goods and services and with
certain impacts on grasslands and shrublands.
Two land use categories merit brief explanation. The Conservation
Reserve Program provides for 10-year lease payments to farmers
to remove sensitive lands from production; this indicator
includes only acreage on which grass, shrubs, or similar cover
(i.e., not trees) are established. Protected areas
include lands that are primarily managed to maintain biodiversity
and natural processes; these are sometimes referred to as
conservation lands.
Why Can't This Entire Indicator Be Reported at This Time?
There is no consistent reporting of the amount of land in the categories
shown here, with the exception of CRP lands. For example, while data are
available on the number
of livestock raised, data on the acreage used for this purpose are
not available for either public or private lands.
In addition, reporting on this indicator would require the
development of consistent definitions for the land use categories
used here. For example, what level of recreational use qualifies
an area as high-intensity? What housing density,
over how large an area, qualifies an area as rural residences?
Which federal, state, and private lands are to be considered
protected areas?
What Do the Data Show? Currently, data
are available only for CRP acreage since 1994. In
2004,
there were
approximately 30 million
acres of lands under
active CRP contracts that include planting of grassland
or shrubland cover types. This is about 3 million acres
more than the 1999 acreage and 3 million less than 1994
and 1995 levels.
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