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 24 encompasses whole or portions of several states including the states of Arizona, New Mexico, Utah, and Colorado. Questions about the NLCD mapping zone 24 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 35 on 04/25/01 = Scene_ID 5034035000111510
Index 1 for Path 34/Row 36 on 11/06/99 = Scene_ID 7034036009931050
Index 1 for Path 34/Row 37 on 10/21/99 = Scene_ID 7034037009929450
Index 2 for Path 35/Row 34 on 10/12/99 = Scene_ID 7035034009928550
Index 2 for Path 35/Row 35 on 11/13/99 = Scene_ID 7035035009931750
Index 3 for Path 35/Row 36 on 11/13/99 = Scene_ID 7035036009931750
Index 4 for Path 36/Row 34 on 10/19/99 = Scene_ID 7036034009929250
Index 5 for Path 36/Row 35 on 10/19/99 = Scene_ID 7036035009929250
Index 4 for Path 36/Row 36 on 10/19/99 = Scene_ID 7036036009929250
Index 6 for Path 37/Row 34 on 10/10/99 = Scene_ID 7037034009928350
Index 6 for Path 37/Row 35 on 10/10/99 = Scene_ID 7037035009928350
LEAF ON (Summer)-
Index 1 for Path 34/Row 35 on 07/01/99 = Scene_ID 7034035009918250
Index 2 for Path 34/Row 36 on 09/05/00 = Scene_ID 7034036000024950
Index 3 for Path 34/Row 36 on 08/26/02 = Scene_ID 7034036000223850
Index 2 for Path 34/Row 37 on 09/05/00 = Scene_ID 7034037000024950
Index 4 for Path 34/Row 37 on 08/26/02 = Scene_ID 7034037000223850
Index 5 for Path 35/Row 34 on 09/12/00 = Scene_ID 7035034000025650
Index 5 for Path 35/Row 35 on 09/12/00 = Scene_ID 7035035000025650
Index 5 for Path 35/Row 36 on 09/12/00 = Scene_ID 7035036100025650
Index 6 for Path 36/Row 34 on 06/15/00 = Scene_ID 7036034000016750
Index 6 for Path 36/Row 35 on 06/15/00 = Scene_ID 7036035000016750
Index 6 for Path 36/Row 36 on 06/15/00 = Scene_ID 7036036000016750
Index 7 for Path 37/Row 34 on 06/06/00 = Scene_ID 7037034000015850
Index 7 for Path 37/Row 35 on 06/06/00 = Scene_ID 7037035000015850
LEAF-OFF (Fall)-
Index 1 for Path 34/Row 35 on 11/06/99 = Scene_ID 7034035009931050
Index 1 for Path 34/Row 36 on 11/06/99 = Scene_ID 7034036009931050
Index 2 for Path 34/Row 37 on 10/21/99 = Scene_ID 7034037009929450
Index 3 for Path 35/Row 34 on 10/12/99 = Scene_ID 7035034009928550
Index 4 for Path 35/Row 35 on 11/13/99 = Scene_ID 7035035009931750
Index 4 for Path 35/Row 36 on 11/13/99 = Scene_ID 7035036009931750
Index 5 for Path 36/Row 34 on 10/19/99 = Scene_ID 7036034009929250
Index 5 for Path 36/Row 35 on 10/19/99 = Scene_ID 7036035009929250
Index 5 for Path 36/Row 36 on 10/19/99 = Scene_ID 7036036009929250
Index 6 for Path 37/Row 34 on 10/10/99 = Scene_ID 7037034009928350
Index 6 for Path 37/Row 35 on 10/10/99 = Scene_ID 7037035009928350
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.