Name: Fire History

Display Field: RES_NAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: All recorded fires on CapeNature managed property from 1927 - 2019.The dataset is captured as part of CapeNature’s fire management policy to provide an accurate record of the fire history of those areas managed by CapeNature, in order to facilitate ongoing analysis of veld age, fire frequency and fire return intervals as indicators of the state of the veld managed by CapeNature. (SSD File: SSD/14/3/8/5/7)Methodology / Lineage Description:Digitising of historical fire records was initiated by Chris Burgers in 1998, with the assistance of Riki de Villiers. It was substantially added to during 2006-7 by the CAPE GEF Fire project by Granville van Ross and Belinda Munsami. All this work was vetted by and large numbers of further records added by Arne Purves, Helen de Klerk, Cher-Lynn Petersen and Therese Forsyth during 2006-9. Significant contributions were also made byAnne-Lise Schutte-Vlok, Paul Buchholz, Tony Marshall and Patrick Meyer. Our thanks to Armin Seydack who made many fire records available for various reserves in the Southern Cape, and Greg Forsyth making records available for fires on state forests land, that were not available in CapeNature’s records.Since 2000, most Reserve Managers digitize fires themselves using on-screen digitizing over aerial photos and satellite images and GPS (either by walking or flying the fire line) and enter the attributes of the fire report directly into CapeNature’s fire database. All records are centralized and collated by the GIS Fire Technician at Scientific Services.During a follow-up project, extensive data cleaning was done by Therese Forsyth since July 2012 till now and is still ongoing to topologically clean the fire scar shapefiles. This entailed overlaying fire scars per fire season and cleaning out duplicates, slivers and overlaps that lead to too short fire intervals. For fires since 2005, the fires were also verified against the annual SPOT5 satellite mosaic images that were made available on an annual basis.Where possible fire scars were redigitized based on these satellite images.This merged shapefile already contained a column called “FIRE_CODE” as all the individual shapefiles were standardized to have this column. The columns “Month” and “Year” were added and the information these columns were extracted from the fire code. Further attributeinformation was extracted from the central fire database and joined to the merged fire shapefile. This was done by loading the Excel spreadsheet directly into ArcGIS and then joining it to the shapefile. The layer was then spatially sorted ascending by year using “ArcToolbox | Data Management | General | Sort”.The areas were calculated in ArcGIS with the layer projected to UTM34S.Field DescriptionsId - Unique identifierFire_code - Fire Code (Reserve code/month/year/nr of fire in the month)Res_code - Four digit reserve codeLand_Unit - Cape Nature landscape and Unit names (2019)Region - CapeNature region name (Western, Central, Eastern)Month - Month (zero value means the month is unknown)Year - YearRes_centre - Reserve centre nameRes_name - Reserve NameLocal_desc - Locality DescriptionDatestart - Start Date of the fireDateexting - Date the fire was ExtinguishedDatewithd - Date the team WithdrawnReport_off - Reporting OfficerPolic_case - Police Case NumberIgnitionca - Ignition CauseArea_ha - Area in hectares calculated in ArcGIS

Service Item Id: 323ab4d328cf42068d046fc233fe2db8

Copyright Text: Cape Nature

Default Visibility: false

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: 250253.72559999954
YMin: 6150230.9621
XMax: 733752.1628999999
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Spatial Reference: 32734  (32734)

Drawing Info:

Renderer:
Class Breaks Renderer:
Field: YEAR
Min. Value: 1927.0
ClassBreakInfos:
• Class Maximum Value: 1945
  Label: 1927 - 1945
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  Label: 2007 - 2010
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  Label: 2011 - 2013
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Labeling Info:

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Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: FID )
• ID ( type: esriFieldTypeDouble, alias: ID )
• FIRE_CODE ( type: esriFieldTypeString, alias: FIRE_CODE, length: 16 )
• RES_CODE ( type: esriFieldTypeString, alias: RES_CODE, length: 10 )
• LAND_UNIT ( type: esriFieldTypeString, alias: LAND_UNIT, length: 50 )
• MONTH ( type: esriFieldTypeSmallInteger, alias: MONTH )
• YEAR ( type: esriFieldTypeSmallInteger, alias: YEAR )
• RES_CENTRE ( type: esriFieldTypeString, alias: RES_CENTRE, length: 50 )
• RES_NAME ( type: esriFieldTypeString, alias: RES_NAME, length: 100 )
• LOCAL_DESC ( type: esriFieldTypeString, alias: LOCAL_DESC, length: 150 )
• DATESTART ( type: esriFieldTypeString, alias: DATESTART, length: 16 )
• DATEEXTING ( type: esriFieldTypeString, alias: DATEEXTING, length: 16 )
• DATEWITHD ( type: esriFieldTypeString, alias: DATEWITHD, length: 16 )
• REPORT_OFF ( type: esriFieldTypeString, alias: REPORT_OFF, length: 100 )
• POLICE_CAS ( type: esriFieldTypeString, alias: POLICE_CAS, length: 50 )
• IGNITIONCA ( type: esriFieldTypeString, alias: IGNITIONCA, length: 50 )
• AREA_HA ( type: esriFieldTypeDouble, alias: AREA_HA )
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• Shape_Length ( type: esriFieldTypeDouble, alias: Shape_Length )
• Shape_Area ( type: esriFieldTypeDouble, alias: Shape_Area )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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