Soil Vulnerability Modelling


Soil Vulnerability Modelling defines soil zones of similar vulnerability profile for nutrient and microbial contamination to waterways to provide a basis for: 1) setting nutrient load limits across a catchment 2) target management of non-point-source discharges 3) setting aside vegetated buffer zones to trap contaminants in overland flow.


Soil Vulnerability Modelling, formerly known as EnSus, is a framework for analysing the environmental risk associated with land use pressure on the land and deriving best land management practices that will help mitigate these risks. This model can help provide a basis for confident policy development and farm management.

State of Development Unknown
Current Development Activity See vulnerability assessments for several hazards in soil fact sheets in:

Development Contact

Allan Hewitt, Linda Lilburne, Trevor Webb
+64 3 321 9999
Landcare Research
P.O. Box 40
Lincoln 7640,
New Zealand

Main Developers

  • Landcare Research


Outcome Areas Environmental
Management Domains Land
Subdomains Contaminant Losses, Water Yield, Erosion/Sediment, Crop/Farm Systems
Spatial Resolutions Unknown
Spatial Extents Unknown
Spatial Dimensions 2D
Temporal Resolutions Unknown
Temporal Extents Unknown
Steady State or Dynamic Steady State
Level of Integration Environmental

Input & Output Data

Key Input Data Runoff, Drainage
Input Data Formats XLS(X)
Key Output Data Runoff, Drainage contaminat loss from soils
Output Data Formats GIS Compatible Files


Open/Closed Source Open Source
Licence Type No Licence

User Information

Operating Systems MS Windows, Mac OS X, Linux, Dos executable
Software Needed Unknown, ArcView, ArcGIS, ArcMap
User Interface Please Select Gis
Ease of Use Easy If you understand the consept in paper stevens
Use in Policy Process Plan (Policy Formulation)
Support Call developper
Users Forum No

Technical Considerations

Programming Language GIS
Analytical Techniques Input/output, GIS
Keywords land use, soil, farm management
Linkages to other Models

Integrated spatial risk analysis framework for determining best management practices for environmental sustainability

See Page 9

Key References

Stephens PR, Hewitt AE, Sparling GP, Gibb RG, Shepherd TG 2003. Assessing sustainability of land management using a risk identification model. Pedosphere 13(1): 41–48.

Associated Case Studies