3.20. Urban Land Cover: Land Cover Reclassifier

Contributor

Name

Institution

Fredrik Lindberg

Gothenburg
Introduction
The Land Cover Reclassifier is a simple plugin that can be used to create a UMEP land cover raster grid. The land cover fractions included in UMEP are:

1	Paved	Paved surfaces (e.g. roads, car parks)
2	Buildings	Building surfaces
3	Evergreen Trees	Evergreen trees and shrubs
4	Deciduous Trees	Deciduous trees and shrubs
5	Grass	Grass surfaces
6	Bare soil	Bare soil surfaces and unmanaged land
7	Water	Open water (e.g. lakes, ponds, rivers, fountain)

Dialog box

Fig. 3.48 The dialog for the Land Cover Reclassifier

Dialog sections

upper	Select raster land cover dataset to be reclassified into the UMEP land cover classes Include additional land cover classes used in TARGET: If this is ticked in, two more classes appear that is used in the Urban Heat Island: TARGET tool.
middle	Choose interval values to be classified into a certain UMEP land cover class. Not all lines and boxes need to be filled in, but multiple lines are available in case many different intervals are to be classified as the same land cover class.
lower	Specify the output file (.tiff) etc.

Input raster
Any valid raster dataset (float or integer) loaded into QGIS will appear in this dropdown list. Choose the one that includes your land cover information.

Include additional land cover classes used in TARGET

If this is ticked in, two more classes appear that is used in the Urban Heat Island: TARGET tool. TARGET land cover infromation is in somewhat different classes that the standard UMEP classes. The updated Land Cover Reclassifier includes possibilities to pre-process data into all nine classes used by TARGET. In the table below you see the classes used and how they relate to the standard UMEP classes:

TARGET class	UMEP class	Comment
roof	buildings
road	paved	Total impervious surface in UMEP
watr	water
conc	NA	Part of paved. Impervious in TARGET is both divided up between road and concrete.
Veg	Conifer and Deciduous trees	TARGET only have on class of trees whereas UMEP as two.
dry	grass	TARGET divides grass into two classes either dry or completely wet.
irr	grass	TARGET divides grass into two classes either dry or completely wet.
NA	bare soil	TARGET has no bare soil cless. Bare soil becomes dry grass if UMEP land cover is used.

Land cover classes
Fill the interval values that you want to reclassify into a certain cover class. All values not included will appear as 0 in the output land cover raster. This should be avoided.
Output file
Location and filename (geoTIFF) are specified here.
Run
Starts the reclassification.
Close
Closes the plugin.