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 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 50 encompasses whole or portions of several states including the states of Wisconsin and Illinois. Questions about the NLCD mapping zone 50 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.
Acquisition dates of Landsat ETM+ (TM) scenes used for land cover classification in this zone are as follows:
SPRING-
Index 1 for Path 23/Row 28 on 04/26/03 = Scene_ID 7023028000311650
Index 2 for Path 23/Row 29 on 05/19/00 = Scene_ID 7023029000014050
Index 3 for Path 23/Row 30 on 04/25/00 = Scene_ID 5023030000011610
Index 4 for Path 24/Row 28 on 04/24/00 = Scene_ID 7024028000011550
Index 4 for Path 24/Row 29 on 04/24/00 = Scene_ID 7024029000011550
Index 4 for Path 24/Row 30 on 04/24/00 = Scene_ID 7024030000011550
Index 5 for Path 24/Row 31 on 04/27/01 = Scene_ID 7024031000111750
Index 6 for Path 25/Row 28 on 05/02/03 = Scene_ID 5025028000312210
Index 7 for Path 25/Row 29 on 03/30/00 = Scene_ID 7025029000009050
Index 8 for Path 25/Row 30 on 04/18/01 = Scene_ID 7025030000110850
Index 9 for Path 26/Row 28 on 04/25/01 = Scene_ID 7026028000111550
Index 9 for Path 26/Row 29 on 04/25/01 = Scene_ID 7026029000111550
Index 6 for Path 25/Row 28 on 05/02/03 = Scene_ID 5025028000312210
LEAF ON (Summer)-
Index 1 for Path 25/Row 28 on 05/02/03 = Scene_ID 5025028000312210
Index 2 for Path 23/Row 29 on 09/08/00 = Scene_ID 7023029000025250
Index 3 for Path 23/Row 30 on 07/09/01 = Scene_ID 7023030000119050
Index 4 for Path 24/Row 28 on 07/11/02 = Scene_ID 5024028000219210
Index 5 for Path 24/Row 29 on 07/13/00 = Scene_ID 7024029000019550
Index 6 for Path 24/Row 29 on 09/02/01 = Scene_ID 7024029000124550
Index 7 for Path 24/Row 30 on 06/19/00 = Scene_ID 5024030000017110
Index 8 for Path 24/Row 31 on 07/14/03 = Scene_ID 5024031000319510
Index 9 for Path 25/Row 28 on 07/05/03 = Scene_ID 5025028000318610
Index 9 for Path 25/Row 29 on 07/05/03 = Scene_ID 5025029000318610
Index10 for Path 25/Row 29 on 10/06/99 = Scene_ID 7025029009927950
Index11 for Path 25/Row 30 on 05/26/03 = Scene_ID 7025030000314650
Index12 for Path 26/Row 28 on 08/07/01 = Scene_ID 5026028000121910
Index13 for Path 26/Row 29 on 06/09/00 = Scene_ID 7026029000016150
LEAF-OFF (Fall)-
Index 1 for Path 23/Row 28 on 10/10/00 = Scene_ID 7023028000028450
Index 2 for Path 23/Row 29 on 10/24/99 = Scene_ID 7023029009929750
Index 2 for Path 23/Row 30 on 10/24/99 = Scene_ID 7023030009929750
Index 3 for Path 24/Row 28 on 10/31/99 = Scene_ID 7024028009930450
Index 3 for Path 24/Row 29 on 10/31/99 = Scene_ID 7024029009930450
Index 4 for Path 24/Row 30 on 11/16/99 = Scene_ID 7024030009932050
Index 5 for Path 24/Row 31 on 10/15/99 = Scene_ID 7024031009928850
Index 6 for Path 25/Row 28 on 10/11/01 = Scene_ID 7025028000128450
Index 7 for Path 25/Row 29 on 10/06/99 = Scene_ID 7025029009927950
Index 7 for Path 25/Row 30 on 10/06/99 = Scene_ID 7025030009927950
Index 8 for Path 26/Row 28 on 11/14/99 = Scene_ID 7026028009931850
Index 8 for Path 26/Row 29 on 11/14/99 = Scene_ID 7026029009931850
Index 3 for Path 24/Row 28 on 10/31/99 = Scene_ID 7024028009930450
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.