LUCAS NZ Forest Clearing 2008-2018 v018

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Creative Commons Attribution 4.0 International

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Updated
22 Jun 2020

This dataset was last updated on MfE Data Service on 22 Jun 2020.

ISO 19115/19139 Metadata XML PDF

Metadata
File Identifier
17B232F9-A703-4956-B5AA-DF4F39DB44FF
Language
eng
Character Set
Character Set Code
utf8
Hierarchy Level
Scope Code
dataset
Hierarchy Level Name
dataset
Contact
Responsible Party
Organisation Name
LUCAS, Ministry for the Environment
Position Name
GIS Analyst
Contact Info
Contact
Address
Address
Delivery Point
23 Kate Sheppard Place, PO Box 10362
City
Wellington 6143
Country
New Zealand
Electronic Mail Address
lucas@mfe.govt.nz
Role
Role Code
publisher
Date Stamp
Date
2020-06-22
Metadata Standard Name
ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata
Metadata Standard Version
1.1
Reference System Info
Reference System
Reference System Identifier
Identifier
Code
2193
Identification Info
Data Identification
Citation
Citation
Title
ANZLIC LUCAS NZ Forest Clearing 2008 2018 v018
Date
Date
Date
Abstract
Areas of LUCAS LUM forests that have been cleared between 2008 and 2018 inclusive. Forest clearing is detected using mosaics of satellite imagery captured over a range of dates; therefore the year of clearing provided is nominal.
Purpose
In order to produce the LUCAS Land Use Maps 1990, 2008, 2012 and 2016 and estimate annual rates of deforestation, the LUCAS mapping programme routinely detects and classifies forest clearing in NZ.
Credit
Manaaki Whenua - Landcare Research
Status
Progress Code
completed
Resource Maintenance
Maintenance Information
Maintenance And Update Frequency
Maintenance Frequency Code
irregular
Resource Format
Format
Name
*.xml
Version
Unknown
Descriptive Keywords
Keywords
Keyword
New Zealand
Type
Keyword Type Code
theme
Thesaurus Name
Citation
Title
ANZLIC Jurisdictions
Date
Edition
Version 2.1
Edition Date
Date
2008-10-29
Identifier
Identifier
Code
http://asdd.ga.gov.au/asdd/profileinfo/anzlic-jurisdic.xml#anzlic-jurisdic
Cited Responsible Party
Responsible Party
Organisation Name
ANZLIC the Spatial Information Council
Role
Role Code
custodian
Descriptive Keywords
Keywords
Keyword
FORESTS-Natural
Keyword
FORESTS-Plantation
Keyword
LAND-Cover
Keyword
LAND-Use
Type
Keyword Type Code
theme
Thesaurus Name
Citation
Title
ANZLIC Search Words
Date
Edition
Version 2.1
Edition Date
Date
2008-05-16
Identifier
Identifier
Code
http://asdd.ga.gov.au/asdd/profileinfo/anzlic-theme.xml#anzlic-theme
Cited Responsible Party
Responsible Party
Organisation Name
ANZLIC the Spatial Information Council
Role
Role Code
custodian
Resource Constraints
Legal Constraints
Use Limitation
Creative Commons Attribution 4.0 International by Ministry for the Environment
Access Constraints
Restriction Code
license
Resource Constraints
Legal Constraints
Use Limitation
Creative Commons Attribution 4.0 International by Ministry for the Environment
Use Constraints
Restriction Code
license
Spatial Representation Type Code
vector
Language
eng
Character Set
Character Set Code
utf8
Topic Category Code
environment
Extent
EX _ Extent
Geographic Element
EX _ Geographic Description
Identifier
Authority
Citation
Title
ANZMet Lite Country codelist
Date
Edition
Version 1.0
Edition Date
Date
2009-03-31
Identifier
Identifier
Code
http://asdd.ga.gov.au/asdd/profileinfo/anzlic-country.xml#Country
Cited Responsible Party
Responsible Party
Organisation Name
ANZLIC the Spatial Information Council
Role
Role Code
custodian
Code
nzl
Distribution Info
Distribution
Distributor
Distributor
Distributor Contact
Responsible Party
Organisation Name
LUCAS, Ministry for the Environment
Position Name
GIS Analyst
Contact Info
Contact
Address
Address
Delivery Point
23 Kate Sheppard Place, PO Box 10362
City
Wellington 6143
Country
New Zealand
Electronic Mail Address
lucas@mfe.govt.nz
Role
Role Code
publisher
Data Quality Info
DQ _ Data Quality
Scope
DQ _ Scope
Level
Scope Code
dataset
Level Description
Scope Description
Other
dataset
Lineage
LI _ Lineage
Statement
*Detection*
Image mosaics used for change detection are cloud-masked, orthorectified, corrected for atmospheric conditions, and reflectance standardised using the Ecosat algorithms documented in Dymond et al, (2001), Shepherd and Dymond (2003) and Dymond and Shepherd (2004).

In order to estimate rates of deforestation for a calendar year, two mosaics of multispectral satellite imagery with shortwave-Infrared bands (such as SPOT 5, Landsat 7, Landsat 8 and Sentinel 2) are compiled (from capture as near as possible to the beginning of January of Year A and Year B respectively). Matching spectral bands from the two mosaics are compared in a stack to detect change.

Manual quality control checking is performed to remove false-positives arising from small clouds or image mis-registration (Newsome et al, 2018).

A nominal year of clearing is automatically derived, but may receive manual correction during the land use intention classification stage.

*Classification*
Detection and classification of non-anthropogenic change is a by-product of attempting to find the directly anthropogenic (human-induced) change that is applicable to the LUCAS Land Use Map.

The determination that a change is non-anthropogenic is usually made by judging context and pattern visible in satellite imagery. However, when higher resolution aerial imagery becomes available following the clearing event, it can often be useful in confirming the classification.