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 20 encompasses whole or portions of several states including the state of Montana. Questions about the NLCD mapping zone 20 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 36/Row 26 on 04/20/00 = Scene_ID 5036026000011110
Index 2 for Path 36/Row 27 on 05/20/02 = Scene_ID 7036027000214050
Index 3 for Path 36/Row 28 on 05/17/01 = Scene_ID 7036028000113750
Index 4 for Path 37/Row 26 on 05/24/01 = Scene_ID 7037026000114450
Index 4 for Path 37/Row 27 on 05/24/01 = Scene_ID 7037027000114450
Index 4 for Path 37/Row 28 on 05/24/01 = Scene_ID 7037028000114450
Index 5 for Path 38/Row 26 on 05/07/01 = Scene_ID 5038026000112710
Index 5 for Path 38/Row 27 on 05/07/01 = Scene_ID 5038027000112710
Index 6 for Path 38/Row 27 on 05/02/02 = Scene_ID 7038027000212250
Index 7 for Path 38/Row 28 on 05/23/01 = Scene_ID 5038028000114310
Index 8 for Path 39/Row 26 on 05/22/01 = Scene_ID 7039026000114250
Index 8 for Path 39/Row 27 on 05/22/01 = Scene_ID 7039027000114250
Index 9 for Path 40/Row 26 on 05/29/01 = Scene_ID 7040026000114950
Index 9 for Path 40/Row 27 on 05/29/01 = Scene_ID 7040027000114950
LEAF ON (Summer)-
Index 1 for Path 36/Row 26 on 08/05/01 = Scene_ID 7036026000121750
Index 2 for Path 36/Row 27 on 08/19/03 = Scene_ID 5036027000323110
Index 2 for Path 36/Row 28 on 08/19/03 = Scene_ID 5036028000323110
Index 3 for Path 37/Row 26 on 08/09/00 = Scene_ID 7037026000022250
Index 4 for Path 37/Row 27 on 07/30/02 = Scene_ID 7037027000221150
Index 4 for Path 37/Row 28 on 07/30/02 = Scene_ID 7037028000221150
Index 5 for Path 38/Row 26 on 07/05/02 = Scene_ID 7038026000218650
Index 5 for Path 38/Row 27 on 07/05/02 = Scene_ID 7038027000218650
Index 9 for Path 38/Row 27 on 08/30/99 = Scene_ID 7038027009924250
Index 5 for Path 38/Row 28 on 07/05/02 = Scene_ID 7038028000218650
Index 6 for Path 39/Row 26 on 07/22/00 = Scene_ID 7039026000020450
Index 6 for Path 39/Row 27 on 07/22/00 = Scene_ID 7039027000020450
Index 7 for Path 39/Row 28 on 07/12/02 = Scene_ID 7039028000219350
Index 8 for Path 40/Row 26 on 07/29/00 = Scene_ID 7040026000021150
Index 8 for Path 40/Row 27 on 07/29/00 = Scene_ID 7040027000021150
LEAF-OFF (Fall)-
Index 1 for Path 36/Row 26 on 09/17/99 = Scene_ID 7036026009926050
Index 2 for Path 36/Row 27 on 09/30/01 = Scene_ID 5036027000127310
Index 3 for Path 36/Row 28 on 09/22/01 = Scene_ID 7036028000126550
Index 4 for Path 37/Row 26 on 10/15/01 = Scene_ID 7037026000128850
Index 4 for Path 37/Row 27 on 10/15/01 = Scene_ID 7037027000128850
Index 5 for Path 37/Row 28 on 09/26/00 = Scene_ID 7037028000027050
Index 6 for Path 38/Row 26 on 08/30/99 = Scene_ID 7038026009924250
Index 6 for Path 38/Row 27 on 08/30/99 = Scene_ID 7038027009924250
Index 7 for Path 38/Row 28 on 09/15/99 = Scene_ID 7038028009925850
Index 8 for Path 39/Row 26 on 09/22/99 = Scene_ID 7039026009926550
Index 8 for Path 39/Row 27 on 09/22/99 = Scene_ID 7039027009926550
Index 9 for Path 40/Row 26 on 09/15/00 = Scene_ID 7040026000025950
Index10 for Path 40/Row 27 on 10/02/03 = Scene_ID 5040027000327510
Index11 for Path 41/Row 26 on 09/25/01 = Scene_ID 7041026000126850
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.