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A QGIS plugin to compute mesh effective size
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README.md

Overview

FragScape is a QGIS 3 plugin.

Its purpose is to compute landscape fragmentation metrics defined by Jaeger (Jaeger 2000). Among these metrics, effective mesh size has been widely used to quantify landscape fragmentation.

FragScape defines a 4 steps process from raw data to computed metrics and allow user to save configuration so that results can be reproduced with same context.

It has been developped by Mathieu Chailloux at IRSTEA, for the French ecological network resource center (driven by French ministry of ecology).

Installation

FragScape requires QGIS 3. Go to plugins menu, install/manage plugins, activate experimental plugins and FragScape should be available. Install it and a grid icon should appear. Otherwise, it is available in plugins menu.

Documentation

Available documentation:

Example

Sample data is provided with plugin here

Results with CUT method :

CUT_GIF

Results with Cross-Boundary Connection method :

CBC_GIF

To reproduce above results, see "Example" section of User Guide.

Steps

FragScape is a 4 steps plugin :

  1. Parameters setting
  2. Land cover elements selection and preprocessing
  3. Fragmentation elements selection and preprocessing
  4. Metrics computation

Each step is detailed in plugin help panel.

Quotation

Chailloux, M. & Chéry, J.P. & Amsallem, J. (2019) FragScape : a QGIS plugin to quantify landscape fragmentation

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