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 4 encompasses a portion of the state of California. Questions about the NLCD mapping zone 04 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 are as follows:
SPRING-
Index 1 for Path 39/Row 37 on 03/22/02 = Scene_ID 7039037000208150
Index 2 for Path 40/Row 36 on 02/09/02 = Scene_ID 7040036000204050
Index 3 for Path 40/Row 37 on 02/25/02 = Scene_ID 7040037000205650
Index 4 for Path 41/Row 36 on 03/04/02 = Scene_ID 7041036000206350
Index 4 for Path 41/Row 37 on 03/04/02 = Scene_ID 7041037000206350
Index 5 for Path 42/Row 35 on 03/27/02 = Scene_ID 7042035000208650
Index 6 for Path 42/Row 36 on 03/11/02 = Scene_ID 7042036000207050
Index 7 for Path 43/Row 34 on 03/02/02 = Scene_ID 7043034000206150
Index 7 for Path 43/Row 35 on 03/02/02 = Scene_ID 7043035000206150
Index 7 for Path 43/Row 36 on 03/02/02 = Scene_ID 7043036100206150
Index 8 for Path 44/Row 34 on 04/20/00 = Scene_ID 7044034000011150
Index 8 for Path 44/Row 35 on 04/20/00 = Scene_ID 7044035000011150
LEAF ON (Summer)-
Index 1 for Path 39/Row 37 on 06/07/01 = Scene_ID 7039037000115850
Index 2 for Path 40/Row 36 on 06/17/02 = Scene_ID 7040036000216850
Index 3 for Path 40/Row 37 on 06/14/01 = Scene_ID 7040037000116550
Index 4 for Path 41/Row 36 on 06/21/01 = Scene_ID 7041036000117250
Index 4 for Path 41/Row 37 on 06/21/01 = Scene_ID 7041037000117250
Index 5 for Path 42/Row 35 on 07/30/01 = Scene_ID 7042035000121150
Index 6 for Path 42/Row 36 on 08/12/00 = Scene_ID 7042036000022550
Index 7 for Path 43/Row 34 on 07/21/01 = Scene_ID 7043034000120250
Index 8 for Path 43/Row 35 on 08/06/01 = Scene_ID 7043035000121850
Index 8 for Path 43/Row 36 on 08/06/01 = Scene_ID 7043036100121850
Index 9 for Path 44/Row 34 on 06/10/01 = Scene_ID 7044034000116150
Index 9 for Path 44/Row 35 on 06/10/01 = Scene_ID 7044035100116150
LEAF-OFF (Fall)-
Index 1 for Path 39/Row 37 on 11/14/01 = Scene_ID 7039037000131850
Index 2 for Path 40/Row 36 on 10/04/01 = Scene_ID 7040036000127750
Index 2 for Path 40/Row 37 on 10/04/01 = Scene_ID 7040037000127750
Index 3 for Path 41/Row 36 on 09/06/00 = Scene_ID 7041036000025050
Index 3 for Path 41/Row 37 on 09/06/00 = Scene_ID 7041037000025050
Index 4 for Path 42/Row 35 on 10/18/01 = Scene_ID 7042035000129150
Index 5 for Path 42/Row 36 on 11/16/00 = Scene_ID 7042036000032150
Index 6 for Path 43/Row 34 on 10/25/01 = Scene_ID 7043034000129850
Index 6 for Path 43/Row 35 on 10/25/01 = Scene_ID 7043035000129850
Index 6 for Path 43/Row 36 on 10/25/01 = Scene_ID 7043036100129850
Index 7 for Path 44/Row 34 on 09/30/01 = Scene_ID 7044034000127350
Index 8 for Path 44/Row 35 on 10/13/00 = Scene_ID 7044035000028750
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.