Geodataset Name:       CLC_JUL10
Geodataset Type:       SHAPEFILE
Geodataset Feature:    Polygon
Feature Count:         67482
The Cooperative Land Cover Map is a project to develop an improved statewide land cover map from existing sources and expert review of aerial photography. The project is directly tied to a goal of the Florida Comprehensive Wildlife Conservation Strategy (Strategy) to represent Florida's diverse habitats in a spatially-explicit manner. We collected land cover and vegetation data from 37 existing sources including many site-specific natural community maps. Each dataset was evaluated for consistency and quality and assigned a confidence category that determined how it was integrated into the final land cover map. We revised data for eight focal communities (scrub, scrubby flatwoods, sandhill, dry prairie, pine rockland, rockland hammock, mesic flatwoods, upland pine) by inspecting areas that potentially include these communities with high-resolution aerial photography. All data were crosswalked into the Florida Land Cover Classification System. This dataset represents the Focal Communities that were revised for the Cooperative Land Cover Map. This project was funded by a grant from FWC/Florida's Wildlife Legacy Initiative (Project 08009) to Florida Natural Areas Inventory.
DATA SOURCE(S):                    Florida Natural Areas Inventory
GEODATASET EXTENT:                 State of Florida
PUBLICATION DATE: 201007 TIME PERIOD OF CONTENT: Begin Date: 1997 End Date: 2010 DOWNLOAD LINK: http://www.fgdl.org/metadataexplorer/explorer.jsp


Datafile Name: CLC_JUL10.DBF
4 Geometry
4 Integer
100 String
8 Double
100 String
36 Date
4 Integer
0 Double
0 Double


Item Description
OBJECTID Internal feature number.

Shape Feature geometry.

LC_NUM Corresponds to the Florida Land Cover Classification System class code

LC_NAME Corresponds to the Florida Land Cover Classification System class name

Acres Acres of polygon calculated in GIS

DESCRIPT GeoPlan added field based on LCNAME

FGDLAQDATE Date GeoPlan downloaded from source

AUTOID Unique ID added by GeoPlan

SHAPE.AREA Area in meters

SHAPE.LEN Perimeter in meters

Logically consistent. All attribute values fall within defined values
Visually inspected for completeness.
Classification accuracy varies among data sources that contribute to the map.  
Metadata related to accuracy were not available for all sources. Some data sources 
were field verified.  Most data were created through interpretation of aerial 
photography and other ancillary information.
Data sources that contribute to the Cooperative Land Cover Map are described in 
the following report:  Florida Natural Areas Inventory, 2010. Development of a 
Cooperative Land Cover Map: Final Report (available from FNAI upon request).

A supplementary feature class that identifies individual data sources that contribute 
to the map is available from FNAI upon request (Data_Sources_CLC_v1_1).

Detailed methods for revising focal communities are described in the following 
report:  Florida Natural Areas Inventory, 2010. Development of a Cooperative Land 
Cover Map: Final Report (available from FNAI upon request).

The purpose of the Cooperative Land Cover Map is to fill a priority data gap of the 
Strategy for improved habitat mapping.  In addition it provides significantly improved 
data for scrub and sandhill, priority habitats of the Strategy.  The map will inform a 
variety of conservation and management activities in Florida.

Horizontal accuracy is not better than the source imagery upon which individual 
source datasets were developed.  Most source imagery is from two primary sources:

1) Florida's Ortho program imagery at 1 foot resolution; that meets or exceeds a 
verified horizontal accuracy of 7.6 feet at the 95% confidence interval (4.4 feet 
RMSE) as specified in the FGDC Geospatial Positioning Accuracy Standards, Part 
3: National Standard for Spatial Data Accuracy (NSSDA).

2) USGS's 3.75 minute Digital Ortho Quarter Quad (DOQQ) program imagery which 
meets National Map Accuracy Standards for products developed at 1:12K scale 
which specifies that over "90% of well defined points tested must fall within 33 feet" 
of ground condition and National Aerial Photography Program Standards.


Data are intended to be used for general informational and planning purposes and 
not appropriate for legal, regulatory and/or cadastral purposes

The Florida Geographic Data Library is a collection of Geospatial Data
compiled by the University of Florida GeoPlan Center with support from
the Florida Department of Transportation. GIS data available in FGDL is
collected from various state, federal, and other agencies (data sources)
who are data stewards, producers, or publishers. The data available in
FGDL may not be the most current version of the data offered by the
data source. University of Florida GeoPlan Center makes no guarantees
about the currentness of the data and suggests that data users check
with the data source to see if more recent versions of the data exist.

Furthermore, the GIS data available in the FGDL are provided 'as is'.
The University of Florida GeoPlan Center makes no warranties, guaranties
or representations as to the truth, accuracy or completeness of the data
provided by the data sources. The University of Florida GeoPlan Center
makes no representations or warranties about the quality or suitability
of the materials, either expressly or implied, including but not limited
to any implied warranties of merchantability, fitness for a particular
purpose, or non-infringement. The University of Florida GeoPlan Center
shall not be liable for any damages suffered as a result of using,
modifying, contributing or distributing the materials.

A note about data scale: 

Scale is an important factor in data usage.  Certain scale datasets
are not suitable for some project, analysis, or modeling purposes.
Please be sure you are using the best available data. 

1:24000 scale datasets are recommended for projects that are at the
county level.
1:24000 data should NOT be used for high accuracy base mapping such
as property parcel boundaries.
1:100000 scale datasets are recommended for projects that are at the
multi-county or regional level.
1:125000 scale datasets are recommended for projects that are at the
regional or state level or larger.

Vector datasets with no defined scale or accuracy should be
considered suspect. Make sure you are familiar with your data
before using it for projects or analysis. Every effort has been
made to supply the user with data documentation. For additional
information, see the References section and the Data Source Contact
section of this documentation. For more information regarding
scale and accuracy, see our webpage at:


The Cooperative Land Cover map integrates data from multiple sources.

All sources were crosswalked into the Florida Land Cover Classification System (Kawula 2009)

All source datasets were received and processed as vector data.
We used a set of standard geoprocessing and topology operations in ArcGIS 9.3 to 
ensure no overlapping features within or among datasets.  All data were projected 
into the Florida Albers custom coordinate system with NAD 1983 HARN datum. We 
applied a minimum mapping unit of 0.5 acres and dissolved each polygon <0.5 
acres into its largest neighboring polygon except for scrub, pine rockland and 
upland glade polygons for which we applied a minimum mapping unit of 0.1 acres.  
Finally, lines between neighboring polygons with the same classification were 
dissolved.  Based on our review of each dataset, we sometimes made other 
modifications as described in:  Florida Natural Areas Inventory, 2010. Development 
of a Cooperative Land Cover Map: Final Report (available from FNAI upon request).

Explanation of confidence categories:

We evaluated datasets based on metadata, discussions with data providers and a 
general review of the spatial accuracy and classification.  Based on this review we 
assigned a confidence category to each dataset that indicated how or if the 
dataset, or certain classes within the dataset, would be integrated into the final land 
cover map.  A confidence category of 1 indicates the highest level of confidence; 
these data spatially superseded all other intersecting sources.  Category 2 data took 
precedence over statewide datasets (FLUCCS, FLVEG) but did not supersede 
category 1.  Category 3 data were used with review and revision.  Category 4 data 
were used to identify additional areas for aerial photo review and help interpret 
classification during the review process; these data, however, were not directly 
integrated into the final map.
Process Date: 
Aerial Photography Review of Focal Communities: Areas within existing source data in categories 1 through 3 (non-ancillary sources) were excluded from the set of polygons to be reviewed. Scrub, scrubby flatwoods, sandhill, dry prairie and mesic flatwoods (in SWF and SF only) were reviewed simultaneously as a single set of review polygons. We inspected the review polygons as well as proximal areas with the latest high resolution aerial photography (2006 - 2009) and other ancillary data sources including aerial photography from 2004, 1999 and 1995, topographic maps, county soils maps and other land cover datasets. We reviewed areas at a scale of 1:5000 with a minimum mapping unit of 0.5 acres with exception to include smaller polygons for scrub and pine rockland. We spatially edited polygons and delineated new polygons where necessary to identify focal communities and then assigned the polygon a land cover type. We deleted polygons from the set of review polygons that did not represent priority communities and were otherwise correctly classified. We always assigned a land cover type to polygons classified as FLUCCS Coastal Scrub, Xeric Oak, Sand Pine, or Longleaf Pine - Xeric Oak; in addition almost all review polygons in the SWF and SF districts were assigned a land cover type. Any deleted polygon will default to its FLUCCS class in the final land cover map. FNAI biologists familiar with the focal communities both on the ground and through aerial photo interpretation performed the initial polygon inspections. A second reviewer then re-inspected the polygons that were assigned as one of the focal communities. We also checked all locations from the FNAI element occurrence database that reference scrub, scrubby flatwoods, sandhill or dry prairie. We identified areas that appeared to be functioning as viable natural communities. Areas that were historically scrub or sandhill but are now disturbed so that they likely no longer support their characteristic ecological elements or that have succeeded to another natural community type were excluded or classified as another land cover type. We classified many former sandhills as successional hardwood forest. We classified pine plantation as scrub or sandhill where it appeared to function ecologically as a natural community. This was especially true of planted sand pine scrub which can tolerate a high degree of disturbance. We examined aerial photographs from 1995 and 1999 to help determine the level of past ground disturbance. We did not include small patches within residential areas, although if there appeared to be functional large patches within low density or rural residential areas we included them. We mapped only obvious patches of scrubby flatwoods. This community was sometimes difficult to distinguish from scrub and we did not follow strict criteria for distinguishing the two. For dry prairie we strictly followed the FNAI definition of treeless areas of low shrubs and grasses within the buffered historic dry prairie extent. Many prairie-like areas are pine flatwoods in which trees have been removed. To determine dry prairie from flatwoods we considered geographic position, shrub patterns, proximity of wetlands and overall landscape context. For more details: Florida Natural Areas Inventory, 2010. Development of a Cooperative Land Cover Map: Final Report (available from FNAI upon request). Process Date:
Assemblage of Data Sources into Final Map: We separated the data into 3 components for assembly into statewide land cover: 1) Local Source data, which consisted of all local sources with confidence category 1 through 3; 2) FNAI Review data, which consisted of all datasets that we inspected and classified through aerial photo review; and 3) FLUCCS. The SWFWMD published a new version of FLUCCS based on 2008 photography in spring 2010. Although we used 2007 FLUCCS for aerial photo review and comparative analyses in that district, we incorporated the 2008 data in the final land cover map. We converted all datasets into 15 m ESRI grids and combined them based on the following rules: 1) Local Source data with confidence category 1 and 2 superseded FNAI Review data; 2) FNAI Review data superseded Local Source data with confidence category 3; 3) all Local Source 1 through 3 and FNAI Review data superseded FLUCCS. Process Date:
GeoPlan downloaded this layer from FNAI on December 15th, 2011. The data was in shapefile format in Albers HPGN projection. -Upcased all text fields -Renamed from Focal_NC_Map_CLC_v1_1 to CLC_JUL10 -Added DESCRIPT field based on LCNAME field -Added FGDLAQDATE and calculated based on date GeoPlan acquired data from source. Process Date: 20120502

Projection                          ALBERS
Datum                               HPGN
Units                               METERS
Spheroid                            GRS1980
1st Standard Parallel               24  0  0.000
2nd Standard Parallel               31 30  0.000
Central Meridian                   -84 00  0.000
Latitude of Projection's Origin     24  0  0.000
False Easting (meters)              400000.00000
False Northing (meters)             0.00000


Abbr. Name:


Web site:
Contact Person:
Florida Natural Areas Inventory
1018 Thomasville Rd, Suite 200-C
Tallahassee, FL
850-224-8207 x214

http://www.fnai.org/LandCover.cfm aknight@fnai.org Amy Knight

Abbr. Name:             FGDL
Address:                Florida Geographic Data Library
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                        PO Box 115706
                        Gainesville, FL  32611-5706
Web site:               http://www.fgdl.org

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