Population pressure index

Metadata:
Identification_Information
Citation_Information:
Originator: Namibia's National Programme to Combat Desertification
Publication_Date: 2000- 2002
Title: Population pressure Index
Publication_Place: Windhoek
Publisher: Desert research Foundation of Namibia
Online_Linkage: http://www.namibia-desertification.org/dselect.php
Description:
Abstract:

This is a national level desertification indicator. The population density was calculated based on the national census carried out 1991 (Bureau of Statistics, 1994). The population figures are presented based on enumeration areas, ranging from a size of <1km2 to 20 000km2 with an average size of 390 km2. The population pressure, percentage of population depending on firewood and agriculture together with the dependable growing period, i.e. growing period length to be equalled or exceeded in 3 years out of 4 were calculated for each grid cell. Threshold values for the index are presented in the table below.

High pressure

Moderate pressure

DGP- 85 days
PD>15/km2
AD > 60%
FW >80%

DGP- 85 days
PD>10/km2
AD > 50%
FW >70%

DGP- 33 days
PD>7/km2
AD > 50%
FW >80%

DGP- 33 days
PD>3/km2
AD > 40%
FW >60%

DGP >6 days
PD>3/km2
AD > 40%
FW >70%

DGP- 6 days
PD>1/km2
AD > 30%
FW >50%

DGP- 0 days
PD>1/km2
AD > 30%
FW >60%

DGP- 0 days
PD>0.5/km2
AD > 20%
FW >40%

To compensate for the growth rate since the 1991 census an annual population growth rate of 3,3% was assumed for the entire time series.

Purpose:
Data is used on national level descision making on desertification monitoring.
Supplemental_Information:
To obtain the GIS data, please call or preferably send an e-mail to the distributor. Digital form of data is available as Idrisi files or ArcView shape files. Technical prerequisites for using data: Idrisi 32 and as ArcView spatial analyst Annual publications on this data and other desertification monitored indicators are available from the DRFN library. No maps are produced for distribution.
Time_Period_Information:
Beginning_Date: 1970
Ending_Date: 2002
Currentness_Reference: Publication date
Status:
Progress: In work
Maintenance_and_Update_Frequency: Annually
Spatial_Domain:
Bounding_Coordinates:
    West_Bounding_Coordinate: 12.3941
    East_Bounding_Coordinate: 25.189699
    North_Bounding_Coordinate: -17.022699
    South_Bounding_Coordinate: -28.906099
Keywords:
Theme:
    Theme_Keyword_Thesaurus: None
    Theme_Keyword: Desertification index
    Theme_Keyword: population pressure
    Theme_Keyword: Desertification indicator
   Place:
    Place_Keyword_Thesaurus: None
    Place_Keyword: Namibia
Constraints:
Access_Constraints: None
Use_Constraints: Possible gaps in data set because the continuation of the data extraction/creation is very much depended on the primary data obtained from other institutions/programmes.
Spatial_Data_Organization_Information
 
Direct_Spatial_Reference_Method: Raster 
Datum name: WGS 84

Entity and Attribute Information
Distribution_Information
Distributor:
           Contact_Organization_Primary:
                Contact_Organization: Desert Research Foundation 
                 Contact_Person: Patrik Klintenberg
         Contact_Address:
            Address_Type: Mailing Address
             Address: P. O. Box 20232
             City: Windhoek
             Country: Namibia
             Contact_Voice_Telephone: +264 (061) 229 855
             Contact_Facsimile_Telephone: +264 (061) 230 172
             Contact_Electronic_Mail_Address: patrikk@drfn.org.na
 
Resource_Description: Idrisi (32) Images
 
Distribution_Liability:

When requesting  the data, please provide description of intended use. Once obtained from  the distributor this data may only be used for research purposes and under no circumstances should this data be used for commercial purposes.  

The Ministry of Environment and Tourism and our partner organization cannot ensure the reliability of the spatial and non-spatial data layers for any particular purposes. In some cases, original data has been compiled from various sources and the accuracy cannot be guaranteed. The Ministry of Environment and Tourism will not be held liable in any event for any consequences of using this data. Data sets may be updated without notification.

Metadata_Reference_Information
Metadata_Date: 2002/01/24
Metadata_Contact:
Contact_Organization_Primary:
                Contact_Organization: Directorate of Environmental Affairs
                 Contact_Person: Ndaendelao E. Noongo
         Contact_Address:
            Address_Type: Mailing Address
             Address: Private Bag 13306
             City: Windhoek
             Country: Namibia
             Contact_Voice_Telephone: +264 (061) 249 015
             Contact_Facsimile_Telephone: +264 (061) 240 339
             Contact_Electronic_Mail_Address: enn@dea.met.gov.na
 
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Generated by mp version 2.6.0 on Wed Dec 11 13:02:41 2002