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 Earth Satellite Corporation 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 18 encompasses whole or portions of several states including the states of Idaho and Nevada. Questions about the NLCD mapping zone 18 can be directed to the NLCD 2001 land cover mapping team at the National Center, 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 18 are as follows:
SPRING-
Index 1 for Path 38/Row 30 on 05/23/01 = Scene_ID 5038030000114310
Index 1 for Path 38/Row 31 on 05/23/01 = Scene_ID 5038031000114310
Index 2 for Path 39/Row 29 on 06/04/00 = Scene_ID 7039029000015650
Index 2 for Path 39/Row 30 on 06/04/00 = Scene_ID 7039030000015650
Index 2 for Path 39/Row 31 on 06/04/00 = Scene_ID 7039031000015650
Index 3 for Path 40/Row 30 on 05/29/01 = Scene_ID 7040030000114950
Index 3 for Path 40/Row 31 on 05/29/01 = Scene_ID 7040031000114950
Index 4 for Path 41/Row 30 on 05/04/01 = Scene_ID 7041030000112450
Index 5 for Path 41/Row 31 on 06/02/00 = Scene_ID 7041031000015450
Index 6 for Path 42/Row 29 on 04/25/01 = Scene_ID 7042029000111550
Index 9 for Path 42/Row 29 on 07/17/02 = Scene_ID 7042029000219850
Index 7 for Path 42/Row 30 on 05/14/02 = Scene_ID 7042030000213450
Index 8 for Path 42/Row 31 on 05/11/01 = Scene_ID 7042031000113150
LEAF ON (Summer)-
Index 1 for Path 38/Row 30 on 07/05/02 = Scene_ID 7038030000218650
Index 1 for Path 38/Row 31 on 07/05/02 = Scene_ID 7038031000218650
Index 2 for Path 39/Row 29 on 07/12/02 = Scene_ID 7039029000219350
Index 2 for Path 39/Row 30 on 07/12/02 = Scene_ID 7039030000219350
Index 2 for Path 39/Row 31 on 07/12/02 = Scene_ID 7039031000219350
Index 3 for Path 40/Row 30 on 08/14/00 = Scene_ID 7040030000022750
Index 4 for Path 40/Row 31 on 07/13/00 = Scene_ID 7040031000019550
Index 5 for Path 41/Row 30 on 07/10/02 = Scene_ID 7041030000219150
Index 5 for Path 41/Row 31 on 07/10/02 = Scene_ID 7041031000219150
Index 6 for Path 42/Row 29 on 07/17/02 = Scene_ID 7042029000219850
Index 7 for Path 42/Row 30 on 07/01/02 = Scene_ID 7042030000218250
Index 7 for Path 42/Row 31 on 07/01/02 = Scene_ID 7042031000218250
LEAF-OFF (Fall)-
Index 1 for Path 38/Row 30 on 10/03/00 = Scene_ID 7038030000027750
Index 1 for Path 38/Row 31 on 10/03/00 = Scene_ID 7038031000027750
Index 2 for Path 39/Row 29 on 09/22/99 = Scene_ID 7039029009926550
Index 3 for Path 39/Row 30 on 10/08/99 = Scene_ID 7039030009928150
Index 3 for Path 39/Row 31 on 10/08/99 = Scene_ID 7039031009928150
Index11 for Path 39/Row 31 on 10/24/99 = Scene_ID 7039031009929750
Index 4 for Path 40/Row 30 on 09/15/00 = Scene_ID 7040030000025950
Index 5 for Path 40/Row 31 on 10/17/00 = Scene_ID 7040031000029150
Index 6 for Path 41/Row 30 on 10/08/00 = Scene_ID 7041030000028250
Index 7 for Path 41/Row 31 on 09/04/99 = Scene_ID 7041031009924750
Index 8 for Path 42/Row 29 on 10/13/99 = Scene_ID 7042029009928650
Index 9 for Path 42/Row 30 on 09/11/99 = Scene_ID 7042030009925450
Index10 for Path 42/Row 31 on 09/27/99 = Scene_ID 7042031009927050
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.