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 42 encompasses whole or portions of several states including the states of Iowa and Minnesota. Questions about the NLCD mapping zone 42 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 24/Row 31 on 04/27/04 = Scene_ID 5024031000411810
Index 2 for Path 25/Row 30 on 04/02/04 = Scene_ID 5025030000409310
Index 2 for Path 25/Row 31 on 04/02/04 = Scene_ID 5025031000409310
Index 2 for Path 25/Row 32 on 04/02/04 = Scene_ID 5025032000409310
Index 3 for Path 26/Row 29 on 04/25/01 = Scene_ID 7026029000111550
Index 3 for Path 26/Row 30 on 04/25/01 = Scene_ID 7026030000111550
Index 4 for Path 26/Row 31 on 04/17/01 = Scene_ID 5026031000110710
Index 5 for Path 27/Row 29 on 04/29/00 = Scene_ID 7027029000012050
Index 5 for Path 27/Row 30 on 04/29/00 = Scene_ID 7027030000012050
Index 5 for Path 27/Row 31 on 04/29/00 = Scene_ID 7027031000012050
Index 5 for Path 27/Row 32 on 04/29/00 = Scene_ID 7027032000012050
Index 6 for Path 28/Row 30 on 04/04/00 = Scene_ID 7028030000009550
Index 6 for Path 28/Row 31 on 04/04/00 = Scene_ID 7028031000009550
Index 7 Derived images created for cloud replacement
LEAF-ON (Summer)-
Index 1 for Path 24/Row 31 on 07/14/03 = Scene_ID 5024031000319510
Index11 for Path 24/Row 31 on 06/01/02 = Scene_ID 7024031000215250
Index 2 for Path 25/Row 30 on 05/26/03 = Scene_ID 7025030000314650
Index 3 for Path 25/Row 31 on 07/02/02 = Scene_ID 5025031000218310
Index12 for Path 25/Row 31 on 11/12/01 = Scene_ID 7025031000131650
Index 4 for Path 25/Row 32 on 07/31/01 = Scene_ID 5025032000121210
Index 5 for Path 26/Row 29 on 06/09/00 = Scene_ID 7026029000016150
Index 6 for Path 26/Row 30 on 07/14/01 = Scene_ID 7026030000119550
Index13 for Path 26/Row 30 on 04/25/01 = Scene_ID 7026030000111550
Index 6 for Path 26/Row 31 on 07/14/01 = Scene_ID 7026031000119550
Index 7 for Path 27/Row 29 on 07/05/01 = Scene_ID 7027029000118650
Index 7 for Path 27/Row 30 on 07/05/01 = Scene_ID 7027030000118650
Index14 for Path 27/Row 30 on 04/29/00 = Scene_ID 7027030000012050
Index 7 for Path 27/Row 31 on 07/05/01 = Scene_ID 7027031000118650
Index15 for Path 27/Row 31 on 04/29/00 = Scene_ID 7027031000012050
Index 8 for Path 27/Row 32 on 08/06/01 = Scene_ID 7027032000121850
Index 9 for Path 28/Row 30 on 08/13/01 = Scene_ID 7028030000122550
Index10 for Path 28/Row 31 on 07/15/02 = Scene_ID 7028031000219650
LEAF-OFF (Fall)-
Index 1 for Path 24/Row 31 on 11/05/01 = Scene_ID 7024031000130950
Index 2 for Path 25/Row 30 on 11/12/01 = Scene_ID 7025030000131650
Index 2 for Path 25/Row 31 on 11/12/01 = Scene_ID 7025031000131650
Index 2 for Path 25/Row 32 on 11/12/01 = Scene_ID 7025032000131650
Index 3 for Path 26/Row 29 on 11/03/01 = Scene_ID 7026029000130750
Index 4 for Path 26/Row 30 on 11/19/01 = Scene_ID 7026030000132350
Index 4 for Path 26/Row 31 on 11/19/01 = Scene_ID 7026031000132350
Index 5 for Path 27/Row 29 on 11/10/01 = Scene_ID 7027029000131450
Index 5 for Path 27/Row 30 on 11/10/01 = Scene_ID 7027030000131450
Index 5 for Path 27/Row 31 on 11/10/01 = Scene_ID 7027031000131450
Index 5 for Path 27/Row 32 on 11/10/01 = Scene_ID 7027032000131450
Index 6 for Path 28/Row 30 on 10/27/99 = Scene_ID 7028030009930050
Index 6 for Path 28/Row 31 on 10/27/99 = Scene_ID 7028031009930050
Index 7 Derived images created for cloud replacement
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.