uk_ndvi_reclass_u6

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Alaska Geobotany Center
Publication_Date: Unknown
Title:
uk_ndvi_reclass_u6
Geospatial_Data_Presentation_Form: Fgdb raster digital data
Online_Linkage: \\137.229.50.172\geodata\arcticAtlasMaster.gdb
Description:
Abstract:
The normalized difference vegetation index (NDVI) is a measure of greenness.  NDVI was calculated as: NDVI = (NIR - R) / (NIR + R), where NIR is the spectral reflectance in the AVHRR near-infrared channel (0.725-1.1 m, channel 2) where light-reflectance from the plant canopy is dominant, and R is the reflectance in the red channel (0.5 to 0.68 m, channel 1), the portion of the spectrum where chlorophyll absorbs maximally (Markon et al. 1995).  The grid of NDVI values was produced from the same AVHRR data as the false-color CIR image.  NDVI values are saved as scaled integers, where the NDVI value can be calculated as:
 NDVI=0.008(Gridvalue-127)
NDVI values ranged from -0.112  to 1.000 (grid integer values 113 to 252). The final CAVM NDVI map was plotted as 8 categories that were useful in distinguishing vegetation patterns: <0.03, 0.03-0.14, 0.15-0.26, 0.27-0.38, 0.39-0.50, 0.51-0.56, 0.57-0.62, >0.62.  Areas with NDVI < 0.03 are bare rock or ice.  Areas with NDVI = 0.03-0.14 are very sparsely vegetated.  The remaining categories were evenly divided, except for the highest NDVI categories, which were split up to distinguish very shrubby areas in the southern Arctic.

References:
ESRI. 1993. Digital Chart of the World. September 1993, Ed. 1.  Environmental Systems Research Institute Inc. Redlands, CA, USA.

Markon, C.J. M.D. Fleming and E.F. Binnian.  1995.  Characteristics of vegetation phenology over the Alaskan landscape using AVHRR time-series data.  Polar Record 31:179
Purpose:
NDVI and Biomass classification for the Upper Kuparuk River region
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: unknown
Currentness_Reference:
Unknown
Status:
Progress: In work
Maintenance_and_Update_Frequency: Unknown
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -150.390555
East_Bounding_Coordinate: -148.210119
North_Bounding_Coordinate: 69.046490
South_Bounding_Coordinate: 68.295142
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: Biota
Theme_Keyword: ImageryBaseMapsEarthCover
Theme_Keyword: Environment
Theme:
Theme_Keyword_Thesaurus: Alaska Geobotany Center
Theme_Keyword: vegetation
Theme_Keyword: physiogonomy
Theme_Keyword: tundra
Theme_Keyword: ndvi
Theme_Keyword: uk25k
Theme_Keyword: biomass
Place:
Place_Keyword_Thesaurus: Alaska Geobotany Center
Place_Keyword: Arctic
Place_Keyword: Alaska
Place_Keyword: US
Place_Keyword: Upper Kuparuk River region
Place_Keyword: Toolik Lake
Place_Keyword: Imnavait Creek
Access_Constraints: none
Use_Constraints:
Data provided by the Alaska Geobotany Center are copyright protected under the provisions of a Creative Commons Attribution-NonCommercial-ShareAlike License       (http://creativecommons.org/licenses/by-nc-sa/1.0/). Materials may be freely downloaded, reprinted and redistributed for non-commercial use. Reproduction and redistribution of the materials on this web site, including derivative works, shall give credit to the Alaska Geobotany Center and remain subject to the above license. Any web pages that use this material shall contain a link pointing to the Alaska Geobotany Center home page     (http://www.geobotany.uaf.edu/).
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Alaska Geobotany Center
Contact_Person: Hilmar A. Maier
Contact_Position: GIS and Remote Sensing Manager
Contact_Address:
Address_Type: physical address
Address:
Alaska Geobotany Center
Address:
Institute of Arctic Biology
Address:
University of Alaska Fairbanks
City: Fairbanks
State_or_Province: AK
Postal_Code: 99775
Country: US
Contact_Voice_Telephone: +1.907.474.1540
Contact_Voice_Telephone: +1.907.474.2459
Contact_Voice_Telephone: +1.907.474.2460
Contact_Electronic_Mail_Address: dataManager@geobotany.org
Contact Instructions:
http://www.geobotany.org/
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.1850
Cross_Reference:
Citation_Information:
Originator: Alaska Geobotany Center
Title:
Alaska Arctic Vegetation Physiogonomy
Back to Top
Data_Quality_Information:
Lineage:
Process_Step:
Process_Description:
Metadata imported.
Source_Used_Citation_Abbreviation:
C:\DOCUME~1\gneufeld\LOCALS~1\Temp\xml87.tmp
Process_Date: 20100406
Process_Time: 15373600
Back to Top
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 4034
Column_Count: 4278
Vertical_Count: 1
Back to Top
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 6
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -147.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 20.000000
Ordinate_Resolution: 20.000000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.400000
Denominator_of_Flattening_Ratio: 294.978698
Back to Top
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: VAT_uk_ndvi_reclass_u6
Attribute:
Attribute_Label: ObjectID
Attribute_Definition:
Internal feature number.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Value
Attribute_Definition:
NDVI value normalized to integer values
Attribute_Definition_Source:
Alaska Geobotany Center
Attribute:
Attribute_Label: Count
Overview_Description:
Back to Top
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Alaska Geobotany Center
Contact_Person: Hilmar A. Maier
Contact_Position: GIS and Remote Sensing Manager
Contact_Address:
Address_Type: physical address
Address:
Alaska Geobotany Center
Address:
Institute of Arctic Biology
Address:
University of Alaska Fairbanks
City: Fairbanks
State_or_Province: AK
Postal_Code: 99775
Country: US
Contact_Voice_Telephone: +1.907.474.1540
Contact_Voice_Telephone: +1.907.474.2459
Contact_Voice_Telephone: +1.907.474.2460
Contact_Electronic_Mail_Address: dataManager@geobotany.org
Contact Instructions:
http://www.geobotany.org/
Resource_Description: Downloadable Data
Distribution_Liability:
Unknown
Back to Top
Metadata_Reference_Information:
Metadata_Date: 20100406
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Alaska Geobotany Center
Contact_Person: Hilmar A. Maier
Contact_Position: GIS and Remote Sensing Manager
Contact_Address:
Address_Type: physical address
Address:
Alaska Geobotany Center
Address:
Institute of Arctic Biology
Address:
University of Alaska Fairbanks
City: Fairbanks
State_or_Province: AK
Postal_Code: 99775
Country: US
Contact_Voice_Telephone: +1.907.474.1540
Contact_Voice_Telephone: +1.907.474.2459
Contact_Voice_Telephone: +1.907.474.2460
Contact_Electronic_Mail_Address: dataManager@geobotany.org
Contact Instructions:
http://www.geobotany.org/
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile
Back to Top