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 MDA Federal Inc. 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 22 encompasses whole or portions of several states including the states of Wyoming, Montana, and Utah. Questions about the NLCD mapping zone 22 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 34/Row 31 on 04/04/02 = Scene_ID 7034031000209450
Index 2 for Path 34/Row 32 on 04/17/01 = Scene_ID 7034032000110750
Index 3 for Path 35/Row 30 on 04/21/00 = Scene_ID 7035030000011250
Index 4 for Path 35/Row 31 on 05/31/00 = Scene_ID 5035031000015210
Index 4 for Path 35/Row 32 on 05/31/00 = Scene_ID 5035032000015210
Index 5 for Path 36/Row 29 on 05/25/01 = Scene_ID 5036029000114510
Index 6 for Path 36/Row 30 on 05/04/02 = Scene_ID 7036030000212450
Index 7 for Path 36/Row 31 on 04/28/00 = Scene_ID 7036031000011950
Index 8 for Path 36/Row 32 on 04/12/00 = Scene_ID 7036032000010350
Index 9 for Path 37/Row 28 on 05/24/01 = Scene_ID 7037028000114450
Index 9 for Path 37/Row 29 on 05/24/01 = Scene_ID 7037029000114450
Index10 for Path 37/Row 30 on 05/14/03 = Scene_ID 7037030000313450
Index11 for Path 37/Row 31 on 05/08/01 = Scene_ID 7037031000112850
Index11 for Path 37/Row 32 on 05/08/01 = Scene_ID 7037032000112850
Index12 for Path 38/Row 31 on 05/23/01 = Scene_ID 5038031000114310
LEAF ON (Summer)-
Index 1 for Path 34/Row 31 on 07/09/02 = Scene_ID 7034031000219050
Index 2 for Path 34/Row 32 on 06/23/02 = Scene_ID 7034032000217450
Index 3 for Path 35/Row 30 on 07/16/02 = Scene_ID 7035030000219750
Index 3 for Path 35/Row 31 on 07/16/02 = Scene_ID 7035031000219750
Index 4 for Path 35/Row 32 on 06/30/02 = Scene_ID 7035032000218150
Index 5 for Path 36/Row 29 on 08/16/99 = Scene_ID 7036029009922850
Index 5 for Path 36/Row 30 on 08/16/99 = Scene_ID 7036030009922850
Index 6 for Path 36/Row 31 on 07/07/02 = Scene_ID 7036031000218850
Index 7 for Path 36/Row 32 on 06/07/00 = Scene_ID 5036032000015910
Index 8 for Path 37/Row 28 on 07/30/02 = Scene_ID 7037028000221150
Index 8 for Path 37/Row 29 on 07/30/02 = Scene_ID 7037029000221150
Index 9 for Path 37/Row 30 on 07/27/01 = Scene_ID 7037030000120850
Index10 for Path 37/Row 31 on 07/06/99 = Scene_ID 7037031009918750
Index11 for Path 37/Row 32 on 07/30/02 = Scene_ID 7037032000221150
Index12 for Path 38/Row 31 on 06/29/00 = Scene_ID 7038031000018150
LEAF-OFF (Fall)-
Index 1 for Path 34/Row 31 on 10/13/02 = Scene_ID 7034031000228650
Index 2 for Path 34/Row 32 on 11/06/99 = Scene_ID 7034032009931050
Index 3 for Path 35/Row 30 on 10/01/01 = Scene_ID 7035030000127450
Index 3 for Path 35/Row 31 on 10/01/01 = Scene_ID 7035031000127450
Index 4 for Path 35/Row 32 on 11/13/99 = Scene_ID 7035032009931750
Index 5 for Path 36/Row 29 on 09/22/01 = Scene_ID 7036029000126550
Index 6 for Path 36/Row 30 on 10/22/03 = Scene_ID 5036030000329510
Index 7 for Path 36/Row 31 on 09/03/00 = Scene_ID 7036031000024750
Index 8 for Path 36/Row 32 on 11/04/99 = Scene_ID 7036032009930850
Index 9 for Path 37/Row 28 on 10/18/02 = Scene_ID 7037028000229150
Index 9 for Path 37/Row 29 on 10/18/02 = Scene_ID 7037029000229150
Index10 for Path 37/Row 30 on 10/10/99 = Scene_ID 7037030009928350
Index11 for Path 37/Row 31 on 09/10/00 = Scene_ID 7037031000025450
Index10 for Path 37/Row 32 on 10/10/99 = Scene_ID 7037032009928350
Index12 for Path 38/Row 31 on 10/17/99 = Scene_ID 7038031009929050
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.