What Is Considered Low Basal

THE HUMAN FOOTPRINT AND THE LAST OF THE WILD (y dos)

previous post in well above told how to map the human footprint on the territory by reference to Sanderson et al. (2002) and Woolmer et al. (2008). Generate human footprint map of Andalusia seemed an interesting exercise for our students to practice their skills Ecoinformatics with GRASS (and pass the assessment will be played ...). In this post I will address the GRASSienta the year. All material can be downloaded from here (113MB).

The file you're downloading contains:

• dirgrass: GRASS working directory with all the necessary layers
• papers: Articles of Sanderson and Woolmer
• hu.grass: GRASS script to generate the fingerprint map
HUELLA_HUMANA.jpg and human
• . svg: pattern of workflow necessary to generate the map
• HUELLA_HUMANA_MAXIMUM and SUM. Jpg: high resolution capture of trace maps resulting

GRASS directory

The GRASS mapset called dirgrass , and contains a town called andalucia_geo2 . In this locality, including the Andalusian region, two mapsets; PERMANENT , where layers of departure, and huella_humana , where we work. Copy dirgrass in your home directory.

The PERMANENT mapset several raster layers, but only use cob_corine (land use Corine Land Cover) and pob_2000 (population density in 2000). We also have a lot of vector layers that represent different infrastructures, all with the prefix infr_ . Start

GRASS mapset in huella_humana .


workflow

The work schedule is summarized in the following image (click to enlarge, in the compressed file is in HD).





The script The script contains all the steps necessary to generate the human footprint map is hu.grass . Copy it to your personal folder.

The first time you run it step by step copying each line in the GRASS terminal to scroll through each result, in order to understand the process. Later, when changes occur to you to do in the script to generate a footprint map according to your criteria, you can run it directly by typing this in the GRASS terminal: bash

hu.grass

The result
final
The end result should look like this (more or less according to the variations that add to the script), if you use the map to add the fingerprint of the different topics,

or like this if you like the most footprint per cell of all issues.


There are many possible variations within the same methodology, in buffer sizes, and weights of the footprint of each particular layer, and even the ability to weigh the final sum. Choose yours, but justify it ...

That's it!