Layer: Southland Winter Forage 2017 (ID: 33)

Name: Southland Winter Forage 2017

Display Field: LU_Name

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: <DIV STYLE="text-align:Left;"><DIV><DIV>A. A series of 31 satellite images was acquired between February and October 2017. These were from Sentinel-2A and -2B and Landsat-8. Each image was cloud-masked and then classified separately into land cover classes.The resulting set of per-pixel land cover classifications are:classn_lc_s<date>.img for those derived from Sentinel images, andclassn_lc_l<date>.img for those derived from Landsat images.B. A rule-set was used to draw together evidence from the time-series of 31 per-pixel land cover classifications into a single per-pixel land use map representing winter 2017.The term ‘land use’ pertains primarily to the agricultural classes that are the main focus of this work. The map also includes classes outside the agricultural area which are not formally land useclasses, but are simply the dominant land cover class at that pixel through time. The classes are:Agricultural classes – winter forageWF kaleWF other brassica and swedeWF fodder beetWF cerealUnknown/other winter grazing – Intensive winter grazing on pasture or other unidentified winter cropAgricultural classes – non-forageAgricultural bare soil – Bare for an extended period April to JulyCrop residue, dead vegetation – Crop residue or dead vegetation for an extended period April to JulyAutumn-planted crop or pasture – Includes arable crops and pasture renewalPasture – improvedPasture – unimproved/poor quality/low cover – Generally grazed, though there is a meeting point between this class and the non-agricultural (mostly ungrazed) class that includes tussockland.Unknown agriculture – Including mixed classes, scrubby pasture, narrow shelterbelts within a pasture/crop pixelNon-agricultural classesForest and scrub – Both native and exotic, including forestryTussockland, herbfield, alpine shrubland – Essentially ungrazed, though there is a meeting point between this class and the agricultural unimproved pasture class.Water – Lakes, rivers, estuariesSnow, iceRock, scree, gravel, sandHill country/non-agricultural bare soil – For example, land slips. Can be an overlap with the rock/gravel class in silty scree marginsDeep shadow – Insufficient reflection of light to determine land cover class – generally in steep areasUrban, industrialC. A GIS-format paddock boundary map (polygons) was derived from a selected subset of the time-series satellite images. The paddock boundary map covers only those areas considered to be ‘agricultural’ (rather than the whole Southland region, which also includes large alpine and forested areas). This polygon layer was imposed on the per-pixel land use map described in B above. A rule set was used to decide on a final land use classification for each paddock polygon, based on the land use classes of the set of pixels within it. The final output uses the same set of classes as listed in B. Dataset created by Landcare Research - Heather North, Stella Bellis & David Pairman, May 2018</DIV></DIV></DIV>

Service Item Id: e06f521a29114ebb90a00df6a23336a4

Copyright Text: Environment Southland

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Value: WF kale
Label: WF kale
Description: N/A
Symbol:
Value: WF other brassica and swede
Label: WF other brassica and swede
Description: N/A
Symbol:
Value: WF fodder beet
Label: WF fodder beet
Description: N/A
Symbol:
Value: WF cereal
Label: WF cereal
Description: N/A
Symbol:
Value: Winter grazing - other/unknown
Label: Winter grazing - other/unknown
Description: N/A
Symbol:
Value: Agricultural bare soil
Label: Agricultural bare soil
Description: N/A
Symbol:
Value: Crop residue and dead vegetation
Label: Crop residue and dead vegetation
Description: N/A
Symbol:
Value: Autumn-planted crop or pasture
Label: Autumn-planted crop or pasture
Description: N/A
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Value: Pasture - improved
Label: Pasture - improved
Description: N/A
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Value: Pasture - unimproved or low-cover
Label: Pasture - unimproved or low-cover
Description: N/A
Symbol:
Value: Unknown agriculture
Label: Unknown agriculture
Description: N/A
Symbol:
Value: Tussockland, herbfield, shrubland
Label: Tussockland, herbfield, shrubland
Description: N/A
Symbol:
Value: Forest and scrub
Label: Forest and scrub
Description: N/A
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Value: Water
Label: Water
Description: N/A
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Value: Snow and ice
Label: Snow and ice
Description: N/A
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Value: Rock, gravel, sand
Label: Rock, gravel, sand
Description: N/A
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Value: Hill-country bare soil
Label: Hill-country bare soil
Description: N/A
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Value: Unclassified
Label: Unclassified
Description: N/A
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