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 33 encompasses whole or portions of several states including the states of Colorado, Kansas, Nebraska, and Wyoming. Questions about the NLCD mapping zone 33 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 6 for Path 30/Row 32 on 05/04/00 = Scene_ID 7030032000012550
Index 6 for Path 30/Row 33 on 05/04/00 = Scene_ID 7030033000012550
Index 6 for Path 30/Row 34 on 05/04/00 = Scene_ID 7030034000012550
Index 3 for Path 31/Row 31 on 04/28/01 = Scene_ID 7031031000111850
Index 1 for Path 31/Row 32 on 04/09/00 = Scene_ID 7031032000010050
Index 1 for Path 31/Row 33 on 04/09/00 = Scene_ID 7031033000010050
Index 2 for Path 31/Row 34 on 05/11/00 = Scene_ID 7031034000013250
Index 4 for Path 32/Row 31 on 05/02/00 = Scene_ID 7032031000012350
Index 4 for Path 32/Row 32 on 05/02/00 = Scene_ID 7032032000012350
Index 5 for Path 32/Row 33 on 04/16/00 = Scene_ID 7032033000010750
Index 7 for Path 33/Row 31 on 04/13/02 = Scene_ID 7033031000210350
Index 8 for Path 33/Row 32 on 05/12/01 = Scene_ID 7033032000113250
Index 9 for Path 33/Row 33 on 03/28/02 = Scene_ID 7033033000208750
Index10 for Path 34/Row 31 on 04/04/02 = Scene_ID 7034031000209450
Index11 for Path 34/Row 32 on 06/01/00 = Scene_ID 7034032000015350
LEAF ON (Summer)-
Index 1 for Path 30/Row 32 on 07/07/00 = Scene_ID 7030032000018950
Index 1 for Path 30/Row 33 on 07/07/00 = Scene_ID 7030033000018950
Index 1 for Path 30/Row 34 on 07/07/00 = Scene_ID 7030034000018950
Index 2 for Path 31/Row 31 on 07/14/00 = Scene_ID 7031031000019650
Index 2 for Path 31/Row 32 on 07/14/00 = Scene_ID 7031032000019650
Index 2 for Path 31/Row 33 on 07/14/00 = Scene_ID 7031033000019650
Index 3 for Path 31/Row 34 on 06/15/01 = Scene_ID 7031034000116650
Index 8 for Path 32/Row 31 on 08/06/00 = Scene_ID 7032031000021950
Index 8 for Path 32/Row 32 on 08/06/00 = Scene_ID 7032032000021950
Index 9 for Path 32/Row 33 on 06/06/01 = Scene_ID 7032033000115750
Index 4 for Path 33/Row 31 on 07/28/00 = Scene_ID 7033031000021050
Index 4 for Path 33/Row 32 on 07/28/00 = Scene_ID 7033032000021050
Index 5 for Path 33/Row 33 on 08/13/00 = Scene_ID 7033033000022650
Index 7 for Path 34/Row 31 on 07/09/02 = Scene_ID 7034031000219050
Index 6 for Path 34/Row 32 on 06/23/02 = Scene_ID 7034032000217450
LEAF-OFF (Fall)-
Index 3 for Path 30/Row 32 on 09/12/01 = Scene_ID 7030032000125550
Index 2 for Path 30/Row 33 on 09/25/00 = Scene_ID 7030033000026950
Index 2 for Path 30/Row 34 on 09/25/00 = Scene_ID 7030034000026950
Index 1 for Path 31/Row 31 on 10/18/00 = Scene_ID 7031031000029250
Index 1 for Path 31/Row 32 on 10/18/00 = Scene_ID 7031032000029250
Index 1 for Path 31/Row 33 on 10/18/00 = Scene_ID 7031033000029250
Index 1 for Path 31/Row 34 on 10/18/00 = Scene_ID 7031034000029250
Index 5 for Path 32/Row 31 on 09/10/01 = Scene_ID 7032031000125350
Index 4 for Path 32/Row 32 on 10/09/00 = Scene_ID 7032032000028350
Index 4 for Path 32/Row 33 on 10/09/00 = Scene_ID 7032033000028350
Index 6 for Path 33/Row 31 on 10/16/00 = Scene_ID 7033031000029050
Index 6 for Path 33/Row 32 on 10/16/00 = Scene_ID 7033032000029050
Index 6 for Path 33/Row 33 on 10/16/00 = Scene_ID 7033033000029050
Index 7 for Path 34/Row 31 on 10/13/02 = Scene_ID 7034031000228650
Index 8 for Path 34/Row 32 on 11/06/99 = Scene_ID 7034032009931050
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.