phytomass

Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator: Alaska Geobotany Center
Publication_Date: 20031210
Title:
phytomass
Geospatial_Data_Presentation_Form: Fgdb raster digital data
Other_Citation_Details:
Suggested Citation: CAVM Team. 2003. Circumpolar Arctic Vegetation Map. Scale 1:7,500,000. Conservation of Arctic Flora and Fauna (CAFF) Map No. 1. U.S. Fish and Wildlife Service, Anchorage, Alaska.
Online_Linkage: \\137.229.50.172\geodata\arcticAtlasMaster.gdb
Description:
Abstract:
The above-ground plant biomass map was created by applying a regression equation to the AVHRR data (Walker et al. 2003). The regression quantifies the relationship between NDVI and aboveground plant biomass, calculated from clip harvest data (Fig. 1).  Phytomass was calculated for each pixel, based on the equation: 
phytomass = 26.58e(6.9357 * NDVI)
Phytomass values, which ranged from 19 to 2965 g/m2, were divided into 8 categories that were useful in distinguishing vegetation patterns: < 50, 50-100, 101-250, 250-500, 501-1000, 1001-1500, 1501-2000, and >2000 g/m2.  The smaller ranges for the low-end phytomass values made it possible to visually distinguish between northern parts of the Arctic (subzones A, B and C), which have less than 500 g/m2 of phytomass.
Purpose:
Vegetation classification for the Circumpolar Arctic Vegetation Mapping project
Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 1993
Single_Date/Time:
Calendar_Date: 1995
Currentness_Reference:
ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
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: cavm
Theme_Keyword: ilum
Theme_Keyword: vegetation
Theme_Keyword: physiogonomy
Theme_Keyword: tundra
Place:
Place_Keyword_Thesaurus: Alaska Geobotany Center
Place_Keyword: Arctic
Place_Keyword: Circumpolar
Place_Keyword: Alaska
Place_Keyword: Canada
Place_Keyword: Greenland
Place_Keyword: Iceland
Place_Keyword: Norway
Place_Keyword: Russia
Place_Keyword: Svalbard
Place_Keyword: US
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/
Browse_Graphic:
Browse_Graphic_File_Name: http://www.geobotany.uaf.edu/cavm/data/cavm_veg600.png
Browse_Graphic_File_Description:
600x600 png (64 kb)
Browse_Graphic_File_Type: PNG
Browse_Graphic:
Browse_Graphic_File_Name: http://www.geobotany.uaf.edu/cavm/data/cavm_veg1300.png
Browse_Graphic_File_Description:
1300x1300 png (186 kb)
Browse_Graphic_File_Type: PNG
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:
Circumpolar Arctic Vegetation Physiogonomy
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 8833
Column_Count: 8833
Vertical_Count: 1
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 1000.000000
Ordinate_Resolution: 1000.000000
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: VAT_phytomass
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:
Attribute_Label: Count
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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
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Metadata_Reference_Information:
Metadata_Date: 20100511
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
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