topic Re: GIS Tools for Land Cover Change in ArcGIS Spatial Analyst Questions

GIS Tools for Land Cover Change

PaulaSalvador — Wed, 21 Sep 2011 12:39:32 GMT

Hi!
Wich tools are normally used to quantify and locate land-cover changes (in particular degradation and regeneration)?

Re: GIS Tools

TonyContreras — Wed, 21 Sep 2011 14:56:20 GMT

You could start here, and for more advanced analysis, you will probably need to use a combination of tools in Model builder, probably utilizing the Conditional and Map Algebra toolsets.

Using the Difference button on the Image Analysis window

Re: GIS Tools for Land Change

TimothyHales — Wed, 21 Sep 2011 18:56:07 GMT

There is also some land change imagery available on the Landsat Imagery site under the Landsat Community.

Re: GIS Tools for Land Cover Change

PaulaSalvador — Thu, 22 Sep 2011 07:31:25 GMT

Now I would like to know wich tools shoud I use to access the dynamics of a woodland considering that the land-cover is heterogeneous. would that be the same?

Re: GIS Tools for Land Cover Change

JeffreySwain — Thu, 22 Sep 2011 13:13:20 GMT

You will need to create the land cover raster. If you have a 3 band raster, you will need to perform either a supervised or unsupervised classification to create the raster. Do this for both sets of data. Once you create the rasters, you will need to compare the two rasters for the change analysis. There are many examples on how to do this, including this link. Also here is supervised classification.

Here is the information about image classification.

Also here is the information on LUCAT Tools.

So there is a process, but it will require you to process the data, not just run a tool.

Re: GIS Tools for Land Cover Change

PaulaSalvador — Fri, 07 Oct 2011 11:51:40 GMT

Thank you. I have done it and i really appreciate your help. Regards