Tools: Land Use Impact Model (LUIM)

ArcGIS Tools: Land Use Impact Model (LUIM)

The Land Use Impact Model (LUIM) is a risk assessment framework for land degradation that has been developed as an extension to a GIS (ESRI). The conceptual design of the LUIM risk assessment framework is shown in Figure 1 below. The framework is based on the Australian and New Zealand Risk Management Standard (AS/NZS4360) defined by Standards Australia (Risk Management AS/NZS4360:1999)
 
The LUIM framework operates on land units (also called unique mapping areas) and assesses the risk posed by land degradation processes (such as soil erosion, soil structure decline, soil acidification, etc.) for land units.

Risk is determined through an assessment of Likelihood and Consequence:
  • Likelihood is the chance of a certain level of land degradation occurring on a particular land unit. This depends on the Susceptibility of a land unit to the land degradation process under investigation (such as soil erosion) and the role that Management practice may play in causing, aggravating or moderating that process.
  • Consequence is the anticipated impact that land degradation will have on a land unit should it occur. This depends on the ability of the land unit to maintain its function or productive potential if degradation occurs (Sensitivity) and on the value of the land unit in economic, environmental and social terms (Asset Value).
The risk posed by a land degradation process increases for a land unit as the likelihood of land degradation occurring increases and the consequence, should it occur, increases.
 

LUIM Risk Framework


 

The LUIM risk assessment framework is implemented using a Bayesian Network. This allows for the incorporation of uncertainty into the risk assessment. Hence, LUIM outputs are probabilities of certain risk levels occurring on land units. LUIM can also produce probability maps for any of the components in its framework, i.e., Susceptibility, Management, Likelihood, Sensitivity, Asset Value, Consequence and Risk.

LUIM may be downloaded for free. You are asked to complete a registration form on line. LUIM runs as an extension in ArcGIS. It also uses Microsoft's .NET Framework (.Net Version 1.13 for ArcGIS 9.1 and .Net Version 2.0 for ArcGIS  9.2). In the background LUIM runs Bayesian Network software, namely  Netica
™ Application from Norsys Software Corporation. This is installed as part of the LUIM install. The Help file for LUIM explains how to use Netica for viewing Bayesian Networks.

To understand more about LUIM download the Help file or read related publications.
  • Download LUIM Help File (3,928KB)
  • Joanne McNeill, J., MacEwan, R., Crawford, D. (2007) Using GIS and a Land Use Impact Model to Assess Risk of Soil Erosion in West Gippsland, Applied GIS 2(2): pp. 19.1–19.16. DOI: 10.2104/ag060019
  • Report on the Land Use Impact Model Feb. 2007, Department of Primary Industries, Primary Industries Research, Victoria, Australia. 

The Land Use Impact Model (LUIM) ArcGIS Extension: <% agreed=request.form("agree_to_terms") email1=request.form("email_address") ArcGISVer=request.form("ArcGISVer") dl_name=request.form("dl_name") dl_company=request.form("dl_company") if agreed="" or agreed="No" then %>

To download LUIM including Install document and example data:

Please enter your details below (e-mail address required, a message will be send to D. Pullar).

      :Valid Email Address

      :Your Name

      :Company/Institution

for ArcGIS 9.2                for ArcGIS 9.1

Before downloading LUIM, you must read and accept the Terms of Use agreement below.


Yes, Agree to Terms                No, Disagree to Terms




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e-mail: " & email1 & "
Company: " & dl_company .Send End With if err<>0 then response.write "Sorry, could not send the message, please check the email address!
- Go Back -

" err=0 else response.write "
Thank you, " & email1 & " - Please download :
" if ArcGISVer="91" then response.write "LUIM for ArcGIS 9.1

" elseif ArcGISVer="92" then response.write "LUIM for ArcGIS 9.2

" else response.write "Sorry, something went wrong " end if end if ' ---------------------------------------------------------------------- end if %>
Contact David Pullar d.pullar@uq.edu.au of you have questions.