U.S. Geological Survey
20030901
USGS_NLCD_Tree_Canopy_2001
1.0
remote-sensing image
None
None
Sioux Falls, SD
U.S. Geological Survey
References:
Homer, C., C. Huang, L. Yang, B. Wylie and M. Coan, 2004. Development of a 2001 national land cover database for the United States. Photogrammetric Engineering and Remote Sensing.
Huang, C., L. Yang, B. Wylie, and C. Homer, 2001. A strategy for estimating tree canopy density using Landsat 7 ETM+ and high resolution images over large areas. In: Third International Conference on Geospatial Information in Agriculture and Forestry; November 5-7, 2001; Denver, Colorado. CD-ROM, 1 disk.
The USGS acknowledges the support of Sanborn Map Company in development of data in this zone.
http://www.mrlc.gov
NLCD_Tree_Canopy_2001
The National Land Cover Database 2001 tree canopy layer for mapping zone 37A was produced through a cooperative project conducted by the Multi-Resolution Land Characteristics (MRLC) Consortium. The MRLC Consortium is a partnership of federal agencies (www.mrlc.gov), consisting of the U.S. Geological Survey (USGS), the National Oceanic and Atmospheric Administration (NOAA), the U.S. Environmental Protection Agency (EPA), the U.S. Department of Agriculture (USDA), the U.S. Forest Service (USFS), the National Park Service (NPS), the U.S. Fish and Wildlife Service (FWS), the Bureau of Land Management (BLM) and the USDA Natural Resources Conservation Service (NRCS). One of the primary goals of the project is to generate a current, consistent, seamless, and accurate National Land cover Database (NLCD) circa 2001 for the United States at medium spatial resolution. For a detailed definition and discussion on MRLC and the NLCD 2001 products, refer to Homer et al. (2003) and http://www.mrlc.gov/mrlc2k.asp. The NLCD 2001 was created by partitioning the U.S. into mapping zones. A total of 66 mapping zones were delineated within the conterminous U.S. based on ecoregion and geographical characteristics, edge matching features and the size requirement of Landsat mosaics. Mapping zone 37A encompasses whole or portions of several states including the states of Louisiana, Arkansas, Texas, and a small portion of Mississippi. Questions about the NLCD mapping zone 37A can be directed to the NLCD 2001 land cover mapping team at the USGS/EROS, Sioux Falls, SD (605) 594-6151 or mrlc@usgs.gov. Disclaimer: This product is for informational purposes only and may not be suitable for legal, engineering, or surveying purposes. It does not represent an official survey and represents only the approximate relative location of features and boundaries. Mapping may not necessarily reflect on-the-ground conditions. This product and those involved in its production make no claims as to the accuracy or reliability of the data, and neither assumes, nor will accept liability for their use.
The goal of this project is to provide the Nation with complete, current and consistent public domain information on its land use and land cover.
Corner Coordinates (center of pixel, projection meters)
Upper Left Corner: -45075 meters(X), 1308945 meters(Y)
Lower Right Corner: 703575 meters(X), 662235 meters(Y)
en
19990428
20020615
REQUIRED: The year (and optionally month, or month and day) for which the data set corresponds to the ground.
ground condition
As needed
-96.471619
-91.396190
34.818729
29.217862
-514335.000000
415095.000000
310785.000000
1578465.000000
None
tree canopy
GIS
U.S. Geological Survey
USGS
digital spatial data
ISO 19115 Category
imagery
Base Maps
Earth Cover
U.S. Department of Commerce, 1995, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions, Federal Information Processing Standard 10-4,): Washington, D.C., National Institute of Standards and Technology
United States
U.S.
US
None
zone 37A
U.S. Department of Commerce, 1987, Codes for the identification of the States, the District of Columbia and the outlying areas of the United States, and associated areas (Federal Information Processing Standard 5-2): Washington, D.C., National Institute of Standards and Technology
Louisiana
LA
Arkansas
AR
Texas
TX
MS
Mississippi
None
None
U.S. Geological Survey
Customer Services Representative
mailing and physical address
USGS/EROS
47914 252nd Street
Sioux Falls
SD
57198-0001
USA
605/594-6151
605/594-6933
605/594-6589
custserv@usgs.gov
0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT)
The USGS point of contact is for questions relating to the data display and download from this web site. For questions regarding data content and quality, refer to:
http://www.mrlc.gov/mrlc2k.asp or email: mrlc@usgs.gov
U.S. Geological Survey, Sanborn Map Company
None
Unclassified
N/A
ESRI ArcCatalog 9.0.0.535
Raster Dataset
Regression tree algorithms employed in NLCD 2001 mapping offer a cross-validation option for assessing classification and prediction reliability. Cross-validation can provide relatively reliable estimates for tree canopy predictions if the reference data used for cross-validation are collected based on a statistically valid sampling design. For mapping zone 37A tree canopy modeling, a 5-fold cross-validation was conducted by dividing the entire training data set into 5 subsets of equal size. For each model run, an accuracy estimate was derived using one subset to evaluate the model prediction (with the model developed using the remaining training samples). This process was repeated 5 times. After all 5 runs, an average value of all accuracy estimates and standard errors from the 5 runs were computed. Users should be cautioned that these cross-validation results provide users with only first-order estimates of data quality, and should not be considered a formal accuracy assessment.
92
The above listed value is the overall accuracy obtained for tree canopy in the cross-validation study for mapping zone 37A.
21 1-m resolution DOQQs across mapping zone 37A were classified into either tree canopy or non-tree canopy areas, and then values summed within each 30 meter Landsat pixel cell to obtain the percentage of tree canopy.
This NLCD product of mapping zone 37A Tree Canopy layer is the version dated 06/08/2006.
N/A
N/A
The method employed to map tree canopy density for NLCD 2001 consists of three key steps: deriving reference data of tree canopy density from the high spatial resolution images, calibrating density prediction models using reference data and Landsat spectral bands, and extrapolating the developed models spatially to map per-pixel tree canopy density. This method is described in detail in Huang et al. (2001). This approach was applied to mapping zone 37A by Sanborn Map Company.
withheld
Unknown
withheld
Sanborn Map Company
mailing and physical address
455 E. Eisenhower Parkway, Suite 240
Ann Arbor
MI
48108
USA
734 213-1060
NA
713-213-1060
abrenner@sanborn.com
M-F 9-5pm PST
To develop adequate training data for tree canopy density estimation, 21 1-m resolution DOQQs across mapping zone 37A were classified into either tree canopy or non-tree canopy areas, and then values summed within each 30 meter Landsat pixel cell to obtain the percentage of tree canopy. The training data were selected based on the degree of variance each training data set possesses with regards to Landsat ETM+ imagery used for mapping. Each added training data set decreased the amount of variance present within the Landsat data as a whole. The process was repeated until the required number of samples had been allocated.
By combining the training data with Landsat spectral data and other ancillary data, tree canopy prediction models were developed using "Cubist". After the best combination of possible input data layers had been determined and the final percent canopy density layer produced, a mask was made from the final land cover classification of the mapping zone and was used to eliminate those pixels from the canopy density file that fall into non-forested areas. The mask includes 5 land cover classes (deciduous forest, coniferous forest, mixed forest, woody wetlands, and developed open space).
Acquisition dates of Landsat ETM+ (TM) scenes used for land cover classification in this zone are as follows:
SPRING-
Index 5 for Path 23/Row 38 on 02/21/00 = Scene_ID 5023038000005210
Index 3 for Path 24/Row 36 on 02/20/00 = Scene_ID 7024036000005150
Index 3 for Path 24/Row 37 on 02/20/00 = Scene_ID 7024037000005150
Index 3 for Path 24/Row 38 on 02/20/00 = Scene_ID 7024038000005150
Index 4 for Path 24/Row 39 on 01/08/02 = Scene_ID 7024039000200850
Index 2 for Path 24/Row 40 on 02/20/00 = Scene_ID 7024040000005150
Index 2 for Path 25/Row 37 on 01/10/00 = Scene_ID 7025037000001050
Index 2 for Path 25/Row 38 on 01/10/00 = Scene_ID 7025038000001050
Index 2 for Path 25/Row 40 on 01/10/00 = Scene_ID 7025040000001050
Index 1 for Path 26/Row 37 on 02/23/02 = Scene_ID 7026037000205450
Index 1 for Path 26/Row 38 on 02/23/02 = Scene_ID 7026038000205450
Index 1 for Path 26/Row 39 on 02/23/02 = Scene_ID 7026039000205450
LEAF ON (Summer)-
Index 8 for Path 23/Row 38 on 05/14/01 = Scene_ID 5023038000113410
Index 7 for Path 24/Row 36 on 05/10/00 = Scene_ID 7024036000013150
Index 6 for Path 24/Row 37 on 04/08/00 = Scene_ID 7024037000009950
Index 6 for Path 24/Row 38 on 04/08/00 = Scene_ID 7024038000009950
Index 6 for Path 24/Row 39 on 04/08/00 = Scene_ID 7024039000009950
Index 4 for Path 25/Row 37 on 04/26/01 = Scene_ID 5025037000111610
Index 4 for Path 25/Row 38 on 04/26/01 = Scene_ID 5025038000111610
Index 4 for Path 25/Row 39 on 04/26/01 = Scene_ID 5025039000111610
Index 5 for Path 25/Row 40 on 05/07/99 = Scene_ID 5025040009912710
Index 1 for Path 26/Row 37 on 06/15/02 = Scene_ID 7026037000216650
Index 2 for Path 26/Row 38 on 05/14/02 = Scene_ID 7026038000213450
Index 3 for Path 26/Row 39 on 04/28/99 = Scene_ID 5026039009911810
LEAF-OFF (Fall)-
Index 6 for Path 23/Row 38 on 10/24/99 = Scene_ID 7023038009929750
Index 5 for Path 24/Row 36 on 11/16/99 = Scene_ID 7024036009932050
Index 1 for Path 24/Row 37 on 10/15/99 = Scene_ID 7024037009928850
Index 5 for Path 24/Row 38 on 11/16/99 = Scene_ID 7024038009932050
Index 5 for Path 24/Row 39 on 11/16/99 = Scene_ID 7024039009932050
Index 2 for Path 25/Row 37 on 10/06/99 = Scene_ID 7025037009927950
Index 2 for Path 25/Row 38 on 10/06/99 = Scene_ID 7025038009927950
Index 2 for Path 25/Row 39 on 10/06/99 = Scene_ID 7025039009927950
Index 2 for Path 25/Row 40 on 10/06/99 = Scene_ID 7025040009927950
Index 4 for Path 26/Row 37 on 10/13/99 = Scene_ID 7026037009928650
Index 3 for Path 26/Row 38 on 09/29/00 = Scene_ID 7026038000027350
Index 3 for Path 26/Row 39 on 09/29/00 = Scene_ID 7026039000027350
Landsat data and ancillary data used for the tree canopy -
Data Type of DEM composed of 1 band of Continuous Variable Type.
Data Type of Slope composed of 1 band of Continuous Variable Type.
Data Type of Aspect composed of 1 band of Categorical Variable Type.
Data type of Position Index composed of 1 band of Continuous Variable Type.
withheld
Unknown
withheld
U.S. Geological Survey
Customer Service Representative
mailing and physical address
USGS/EROS
47914 252nd Street
Sioux Falls
SD
57198-0001
USA
605/594-6151
605/594-6933
605/594-6589
custserv@usgs.gov
0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT)
The USGS point of contact is for questions relating to the data display and download from this web site. Questions about this NLCD mapping zone can be directed to the NLCD 2001 land cover mapping team at the USGS/EROS, Sioux Falls, SD (605) 594-6151 or mrlc@usgs.gov.
Metadata imported.
withheld
20090615
08124700
Raster
Pixel
40235
25050
1
30.000000
30.000000
8
Upper Left
TRUE
LZ77
1
pixel codes
TRUE
SDR
row and column
30.000000
30.000000
meters
North American Datum of 1983
Geodetic Reference System 80
6378137.000000
298.257222
GCS_North_American_1983
USA_Contiguous_Albers_Equal_Area_Conic_USGS_version
Explicit elevation coordinate included with horizontal coordinates
1.000000
SDE_VAT_27
NLDC Canopy Layer
National Land Cover Database 2001
Table
102
ObjectID
Internal feature number
ESRI
Sequential unique whole numbers that are automatically generated.
OBJECTID
OID
4
10
0
Value
Percent Canopy
NLCD 2001
0
1
percentage
0.1
Value
Integer
4
10
0
Count_
Count_
Double
8
38
8
Red
Red color code for RGB slice by value for canopy image display purposes. The value is arbitrarily assigned by the display software package, unless defined by user. Standard user defined ramp for NLCD project is start color light gray, end color red.
NLCD 2001
0
100
CSS Color Value Percentage
0.1
Red
Double
8
38
8
Green
Green color code for RGB slice by value for canopy image display purposes. The value is arbitrarily assigned by the display software package, unless defined by user. Standard user defined ramp for NLCD project is start color light gray, end color red.
NLCD 2001
0
100
CSS Color Value Percentage
0.1
Green
Double
8
38
8
Blue
Blue color code for RGB slice by value for canopy image display purposes. The value is arbitrarily assigned by the display software package, unless defined by user. Standard user defined ramp for NLCD project is start color light gray, end color red.
NLCD 2001
0
100
CSS Color Value Percentage
0.1
Blue
Double
8
38
8
Opacity
A measure of how opaque, or solid, a color is displayed in a layer.
NLCD 2001
0
100
Percentage
0.1
Opacity
Double
8
38
8
Attributes defined by USGS and ESRI.
Attribute accuracy is described, where present, with each attribute defined in the Entity and Attribute Section. Note: To ensure all areas of mapping zone 37A are completely covered, a 3,000 meter (100 Landsat pixels) buffer was added to the boundary of mapping zone 37A.
U.S. Geological Survey
Customer Service Representative
mailing and physical address
USGS/EROS
47914 252nd Street
Sioux Falls
SD
57198-0001
USA
605/594-6151
605/594-6933
605/594-6589
custserv@usgs.gov
0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT)
The USGS point of contact is for questions relating to the data display and download from this web site. Questions about the NLCD mapping zone 37A can be directed to the NLCD 2001 land cover mapping team at the USGS/EROS, Sioux Falls, SD (605) 594-6151 or mrlc@usgs.gov.
Downloadable data
Although these data have been processed successfully on a computer system at the USGS, no warranty expressed or implied is made by the USGS regarding the use of the data on any other system, nor does the act of distribution constitute any such warranty. Data may have been compiled from various outside sources. Spatial information may not meet National Map Accuracy Standards. This information may be updated without notification. The USGS shall not be liable for any activity involving these data, installation, fitness of the data for a particular purpose, its use, or analyses results.
Arc/Info Export Format and/or ArcView Shapefile
ArcGIS 9.0
ASCII
0.001
0.000
http://seamless.usgs.gov
The URL http://seamless.usgs.gov provides a map interface that allows for data downloads within a customer defined area of interest. Zoom tools are available that can be used to investigate areas of interest on the map interface. The download tool allows the customer to capture layers from the map, utilizing the Seamless Data Distribution System process for downloading. A request summary page is then generated with the download layers listed. By clicking the "download" button on the summary page, a zipped file will be generated that can be saved on the customer's computer. The file can then be unzipped and imported into various user software applications.
Not available for dissemination
None
Contact Customer Services
Variable
Contact Customer Services Representative
ESRI ArcMap Suite and/or Arc/Info software, and supporting operating systems.
20060804
U.S. Geological Survey
REQUIRED: The person responsible for the metadata information.
Customer Services Representative
mailing and physical address
USGS/EROS
47914 252nd Street
Sioux Falls
SD
57198-0001
USA
605/594-6151
605/594-6933
605/594-6589
custserv@usgs.gov
0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT)
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
None
None
None
None
None
http://www.esri.com/metadata/esriprof80.html
ESRI Metadata Profile
en
{6E10A94A-630A-4DA4-A767-61663B5D0DE6}
20090615
08124700
FALSE
20191113
09001900
20191113
09001900
USGS_NLCD_Tree_Canopy_2001
-514335.000000
237165.000000
310875.000000
1517925.000000
1
002
Projected
GCS_North_American_1983
USA_Contiguous_Albers_Equal_Area_Conic_USGS_version
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Linear Unit: Meter (1.000000)
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original metadata
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U.S. Geological Survey
Customer Services Representative
605/594-6151
605/594-6933
605/594-6589
47914 252nd Street
USGS/EROS
Sioux Falls
SD
57198-0001
US
custserv@usgs.gov
0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT)
20191113
ArcGIS Metadata
1.0
U.S. Geological Survey
Customer Service Representative
605/594-6151
605/594-6933
605/594-6589
USGS/EROS
47914 252nd Street
Sioux Falls
SD
57198-0001
US
custserv@usgs.gov
0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT)
The USGS point of contact is for questions relating to the data display and download from this web site. Questions about the NLCD mapping zone 37A can be directed to the NLCD 2001 land cover mapping team at the USGS/EROS, Sioux Falls, SD (605) 594-6151 or mrlc@usgs.gov.
None
Contact Customer Services
Variable
Arc/Info Export Format and/or ArcView Shapefile
ArcGIS 9.0
ASCII
ESRI ArcMap Suite and/or Arc/Info software, and supporting operating systems.
0.001
http://seamless.usgs.gov
The URL http://seamless.usgs.gov provides a map interface that allows for data downloads within a customer defined area of interest. Zoom tools are available that can be used to investigate areas of interest on the map interface. The download tool allows the customer to capture layers from the map, utilizing the Seamless Data Distribution System process for downloading. A request summary page is then generated with the download layers listed. By clicking the "download" button on the summary page, a zipped file will be generated that can be saved on the customer's computer. The file can then be unzipped and imported into various user software applications.
Downloadable data
http://www.mrlc.gov
Raster Dataset
USGS_NLCD_Tree_Canopy_2001
2003-09-01
1.0
U.S. Geological Survey
Sioux Falls, SD
U.S. Geological Survey
remote-sensing image
None
None
References: Homer, C., C. Huang, L. Yang, B. Wylie and M. Coan, 2004. Development of a 2001 national land cover database for the United States. Photogrammetric Engineering and Remote Sensing. Huang, C., L. Yang, B. Wylie, and C. Homer, 2001. A strategy for estimating tree canopy density using Landsat 7 ETM+ and high resolution images over large areas. In: Third International Conference on Geospatial Information in Agriculture and Forestry; November 5-7, 2001; Denver, Colorado. CD-ROM, 1 disk. The USGS acknowledges the support of Sanborn Map Company in development of data in this zone.
The National Land Cover Database 2001 tree canopy layer for mapping zone 37A was produced through a cooperative project conducted by the Multi-Resolution Land Characteristics (MRLC) Consortium. The MRLC Consortium is a partnership of federal agencies (www.mrlc.gov), consisting of the U.S. Geological Survey (USGS), the National Oceanic and Atmospheric Administration (NOAA), the U.S. Environmental Protection Agency (EPA), the U.S. Department of Agriculture (USDA), the U.S. Forest Service (USFS), the National Park Service (NPS), the U.S. Fish and Wildlife Service (FWS), the Bureau of Land Management (BLM) and the USDA Natural Resources Conservation Service (NRCS). One of the primary goals of the project is to generate a current, consistent, seamless, and accurate National Land cover Database (NLCD) circa 2001 for the United States at medium spatial resolution. For a detailed definition and discussion on MRLC and the NLCD 2001 products, refer to Homer et al. (2003) and http://www.mrlc.gov/mrlc2k.asp. The NLCD 2001 was created by partitioning the U.S. into mapping zones. A total of 66 mapping zones were delineated within the conterminous U.S. based on ecoregion and geographical characteristics, edge matching features and the size requirement of Landsat mosaics. Mapping zone 37A encompasses whole or portions of several states including the states of Louisiana, Arkansas, Texas, and a small portion of Mississippi. Questions about the NLCD mapping zone 37A can be directed to the NLCD 2001 land cover mapping team at the USGS/EROS, Sioux Falls, SD (605) 594-6151 or mrlc@usgs.gov. Disclaimer: This product is for informational purposes only and may not be suitable for legal, engineering, or surveying purposes. It does not represent an official survey and represents only the approximate relative location of features and boundaries. Mapping may not necessarily reflect on-the-ground conditions. This product and those involved in its production make no claims as to the accuracy or reliability of the data, and neither assumes, nor will accept liability for their use.
The goal of this project is to provide the Nation with complete, current and consistent public domain information on its land use and land cover.
U.S. Geological Survey, Sanborn Map Company
U.S. Geological Survey
Customer Services Representative
605/594-6151
605/594-6933
605/594-6589
47914 252nd Street
USGS/EROS
Sioux Falls
SD
57198-0001
US
custserv@usgs.gov
0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT)
The USGS point of contact is for questions relating to the data display and download from this web site. For questions regarding data content and quality, refer to: http://www.mrlc.gov/mrlc2k.asp or email: mrlc@usgs.gov
zone 37A
US
U.S.
United States
U.S. Department of Commerce, 1995, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions, Federal Information Processing Standard 10-4,): Washington, D.C., National Institute of Standards and Technology
Texas
AR
Louisiana
MS
TX
LA
Mississippi
Arkansas
U.S. Department of Commerce, 1987, Codes for the identification of the States, the District of Columbia and the outlying areas of the United States, and associated areas (Federal Information Processing Standard 5-2): Washington, D.C., National Institute of Standards and Technology
USGS
digital spatial data
U.S. Geological Survey
tree canopy
GIS
Base Maps
imagery
Earth Cover
ISO 19115 Category
Base Maps
Texas
USGS
US
AR
digital spatial data
U.S.
Louisiana
MS
U.S. Geological Survey
imagery
zone 37A
tree canopy
Earth Cover
TX
GIS
LA
Mississippi
United States
Arkansas
Although these data have been processed successfully on a computer system at the USGS, no warranty expressed or implied is made by the USGS regarding the use of the data on any other system, nor does the act of distribution constitute any such warranty. Data may have been compiled from various outside sources. Spatial information may not meet National Map Accuracy Standards. This information may be updated without notification. The USGS shall not be liable for any activity involving these data, installation, fitness of the data for a particular purpose, its use, or analyses results.
None
N/A
Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.1.11595
-96.471619
-91.39619
29.217862
34.818729
ground condition
1999-04-28
2002-06-15
Corner Coordinates (center of pixel, projection meters) Upper Left Corner: -45075 meters(X), 1308945 meters(Y) Lower Right Corner: 703575 meters(X), 662235 meters(Y)
1
-101.804071
-93.321062
36.706972
25.721150
None
None
21 1-m resolution DOQQs across mapping zone 37A were classified into either tree canopy or non-tree canopy areas, and then values summed within each 30 meter Landsat pixel cell to obtain the percentage of tree canopy.
This NLCD product of mapping zone 37A Tree Canopy layer is the version dated 06/08/2006.
Regression tree algorithms employed in NLCD 2001 mapping offer a cross-validation option for assessing classification and prediction reliability. Cross-validation can provide relatively reliable estimates for tree canopy predictions if the reference data used for cross-validation are collected based on a statistically valid sampling design. For mapping zone 37A tree canopy modeling, a 5-fold cross-validation was conducted by dividing the entire training data set into 5 subsets of equal size. For each model run, an accuracy estimate was derived using one subset to evaluate the model prediction (with the model developed using the remaining training samples). This process was repeated 5 times. After all 5 runs, an average value of all accuracy estimates and standard errors from the 5 runs were computed. Users should be cautioned that these cross-validation results provide users with only first-order estimates of data quality, and should not be considered a formal accuracy assessment.
The above listed value is the overall accuracy obtained for tree canopy in the cross-validation study for mapping zone 37A.
92
N/A
N/A
To develop adequate training data for tree canopy density estimation, 21 1-m resolution DOQQs across mapping zone 37A were classified into either tree canopy or non-tree canopy areas, and then values summed within each 30 meter Landsat pixel cell to obtain the percentage of tree canopy. The training data were selected based on the degree of variance each training data set possesses with regards to Landsat ETM+ imagery used for mapping. Each added training data set decreased the amount of variance present within the Landsat data as a whole. The process was repeated until the required number of samples had been allocated. By combining the training data with Landsat spectral data and other ancillary data, tree canopy prediction models were developed using "Cubist". After the best combination of possible input data layers had been determined and the final percent canopy density layer produced, a mask was made from the final land cover classification of the mapping zone and was used to eliminate those pixels from the canopy density file that fall into non-forested areas. The mask includes 5 land cover classes (deciduous forest, coniferous forest, mixed forest, woody wetlands, and developed open space). Acquisition dates of Landsat ETM+ (TM) scenes used for land cover classification in this zone are as follows: SPRING- Index 5 for Path 23/Row 38 on 02/21/00 = Scene_ID 5023038000005210 Index 3 for Path 24/Row 36 on 02/20/00 = Scene_ID 7024036000005150 Index 3 for Path 24/Row 37 on 02/20/00 = Scene_ID 7024037000005150 Index 3 for Path 24/Row 38 on 02/20/00 = Scene_ID 7024038000005150 Index 4 for Path 24/Row 39 on 01/08/02 = Scene_ID 7024039000200850 Index 2 for Path 24/Row 40 on 02/20/00 = Scene_ID 7024040000005150 Index 2 for Path 25/Row 37 on 01/10/00 = Scene_ID 7025037000001050 Index 2 for Path 25/Row 38 on 01/10/00 = Scene_ID 7025038000001050 Index 2 for Path 25/Row 40 on 01/10/00 = Scene_ID 7025040000001050 Index 1 for Path 26/Row 37 on 02/23/02 = Scene_ID 7026037000205450 Index 1 for Path 26/Row 38 on 02/23/02 = Scene_ID 7026038000205450 Index 1 for Path 26/Row 39 on 02/23/02 = Scene_ID 7026039000205450 LEAF ON (Summer)- Index 8 for Path 23/Row 38 on 05/14/01 = Scene_ID 5023038000113410 Index 7 for Path 24/Row 36 on 05/10/00 = Scene_ID 7024036000013150 Index 6 for Path 24/Row 37 on 04/08/00 = Scene_ID 7024037000009950 Index 6 for Path 24/Row 38 on 04/08/00 = Scene_ID 7024038000009950 Index 6 for Path 24/Row 39 on 04/08/00 = Scene_ID 7024039000009950 Index 4 for Path 25/Row 37 on 04/26/01 = Scene_ID 5025037000111610 Index 4 for Path 25/Row 38 on 04/26/01 = Scene_ID 5025038000111610 Index 4 for Path 25/Row 39 on 04/26/01 = Scene_ID 5025039000111610 Index 5 for Path 25/Row 40 on 05/07/99 = Scene_ID 5025040009912710 Index 1 for Path 26/Row 37 on 06/15/02 = Scene_ID 7026037000216650 Index 2 for Path 26/Row 38 on 05/14/02 = Scene_ID 7026038000213450 Index 3 for Path 26/Row 39 on 04/28/99 = Scene_ID 5026039009911810 LEAF-OFF (Fall)- Index 6 for Path 23/Row 38 on 10/24/99 = Scene_ID 7023038009929750 Index 5 for Path 24/Row 36 on 11/16/99 = Scene_ID 7024036009932050 Index 1 for Path 24/Row 37 on 10/15/99 = Scene_ID 7024037009928850 Index 5 for Path 24/Row 38 on 11/16/99 = Scene_ID 7024038009932050 Index 5 for Path 24/Row 39 on 11/16/99 = Scene_ID 7024039009932050 Index 2 for Path 25/Row 37 on 10/06/99 = Scene_ID 7025037009927950 Index 2 for Path 25/Row 38 on 10/06/99 = Scene_ID 7025038009927950 Index 2 for Path 25/Row 39 on 10/06/99 = Scene_ID 7025039009927950 Index 2 for Path 25/Row 40 on 10/06/99 = Scene_ID 7025040009927950 Index 4 for Path 26/Row 37 on 10/13/99 = Scene_ID 7026037009928650 Index 3 for Path 26/Row 38 on 09/29/00 = Scene_ID 7026038000027350 Index 3 for Path 26/Row 39 on 09/29/00 = Scene_ID 7026039000027350 Landsat data and ancillary data used for the tree canopy - Data Type of DEM composed of 1 band of Continuous Variable Type. Data Type of Slope composed of 1 band of Continuous Variable Type. Data Type of Aspect composed of 1 band of Categorical Variable Type. Data type of Position Index composed of 1 band of Continuous Variable Type.
U.S. Geological Survey
Customer Service Representative
605/594-6151
605/594-6933
605/594-6589
USGS/EROS
47914 252nd Street
Sioux Falls
SD
57198-0001
US
custserv@usgs.gov
0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT)
The USGS point of contact is for questions relating to the data display and download from this web site. Questions about this NLCD mapping zone can be directed to the NLCD 2001 land cover mapping team at the USGS/EROS, Sioux Falls, SD (605) 594-6151 or mrlc@usgs.gov.
Landsat ETM, DEM
USGS NLCD
The method employed to map tree canopy density for NLCD 2001 consists of three key steps: deriving reference data of tree canopy density from the high spatial resolution images, calibrating density prediction models using reference data and Landsat spectral bands, and extrapolating the developed models spatially to map per-pixel tree canopy density. This method is described in detail in Huang et al. (2001). This approach was applied to mapping zone 37A by Sanborn Map Company.
Sanborn Map Company
734 213-1060
NA
713-213-1060
455 E. Eisenhower Parkway, Suite 240
Ann Arbor
MI
48108
US
abrenner@sanborn.com
M-F 9-5pm PST
Landsat ETM, DOQQ, USGS/EROS
USGS NLCD
2
21557
24955
1
dataset
Esri
8.1.2