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Variables Details
: (EM-86)
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| EM-86 | |
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Document Author
variable.detail.emDocumentAuthorHelp
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Egoh, B., Reyers, B., Rouget, M., Richardson, D.M., Le Maitre, D.C., and van Jaarsveld, A.S. |
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Document Year
variable.detail.emDocumentYearHelp
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2008 |
| Litter cover | Soil erosion potential | Vegetation ability to curb erosion | Vegetation cover | Area of soil retention | Hotspots of soil retention | |
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Variable ID
variable.detail.varIdHelp
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1152 | 1150 | 1151 | 1153 | 1148 | 1149 |
| Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | |
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Qualitative-Quantitative
variable.detail.continuousCategoricalHelp
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Quantitative (Cardinal Only) | Qualitative (Class, Rating or Ranking) | Qualitative (Class, Rating or Ranking) | Quantitative (Cardinal Only) | Qualitative (Class, Rating or Ranking) | Qualitative (Class, Rating or Ranking) |
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Cardinal-Ordinal
variable.detail.cardinalOrdinalHelp
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Cardinal | Ordinal | Ordinal | Cardinal | Non-Ordinal | Non-Ordinal |
| % | Not applicable | Not applicable | % | Not applicable | Not applicable |
| Litter cover | Soil erosion potential | Vegetation ability to curb erosion | Vegetation cover | Area of soil retention | Hotspots of soil retention | |
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Predictor-Intermediate-Response
variable.detail.displayVariableTypeHelp
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Predictor |
Predictor |
Predictor |
Predictor |
Response |
Response |
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Predictor Variable Type
variable.detail.displayPredictorVariableTypeHelp
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Time- or Space-varying Variable |
Time- or Space-varying Variable |
Time- or Space-varying Variable |
Time- or Space-varying Variable |
Not applicable | Not applicable |
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Response Variable Type
variable.detail.resClassHelp
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Not applicable | Not applicable | Not applicable | Not applicable |
Computed Variable |
Computed Variable |
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Data Source/Type
variable.detail.dataTypeHelp
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Transferred Values (e.g., from literature; transferred spatially, temporally or across scales) ?Comment:Source reference for the model of litter cover: Schulze, R.E., 2004. Determination of baseline land cover variable for applications in assessing land use impacts on hydrological responses in South Africa. In: Schulze, R.E, Pike, A. Development and Evaluation of an Installed Hydrological Modelling System. WRC Report Number: 1155/1/04. |
Derived as output of another model (and not found in a widely available database) ?Comment:Source reference for the model of soil erosion potential: Schoeman, J.L., Van Der Walt, M., Monnik, K.A., Thackrah, J., Malherbe, J., Le Roux, R.E., 2002. Development and Application of a Land Capability Classification System for South Africa. Agricultural Research Council (ARC) Institute for Soil, Climate and Water, Pretoria, GW/A/2000/57. |
Obtained by Best Professional Judgment | Map or database (e.g., wide coverage, wide availability, measured or modeled) | Not applicable | Not applicable |
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Variable Classification Hierarchy
variable.detail.vchLevel1Help
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5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
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--Biomass, litter or residue characteristics |
--Physical/chemical characteristics of nonliving ecosystem components |
--CICES categories: Ecosystem goods and services - or landscape-level indices of suitability to supply EGS |
--Biological characteristics, processes or requirements of living ecosystem components |
--CICES categories: Ecosystem goods and services - or landscape-level indices of suitability to supply EGS |
--CICES categories: Ecosystem goods and services - or landscape-level indices of suitability to supply EGS |
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----Mass or quantity of biomass, litter or residue |
----Physical/chemical characteristics of soils, substrates, rocks |
----Suitability to supply regulation & maintenance services-Mediation of flows |
----Biological characteristics, processes or requirements of flora and fungi |
----Suitability to supply regulation & maintenance services-Mediation of flows |
----Suitability to supply regulation & maintenance services-Mediation of flows |
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------Soil, slope or land stability or erosiveness |
------Mass stabilisation and control of erosion rates |
------Cover characteristics (canopy cover, herbaceous cover or leaf area) |
------Mass stabilisation and control of erosion rates |
------Mass stabilisation and control of erosion rates |
| Litter cover | Soil erosion potential | Vegetation ability to curb erosion | Vegetation cover | Area of soil retention | Hotspots of soil retention | |
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Spatial Extent Area
variable.detail.spExtentHelp
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>1,000,000 km^2 | >1,000,000 km^2 | >1,000,000 km^2 | >1,000,000 km^2 | >1,000,000 km^2 | >1,000,000 km^2 |
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Spatially Distributed?
variable.detail.spDistributedHelp
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Yes | Yes | Yes | Yes | Yes | Yes |
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Observations Spatially Patterned?
variable.detail.regularSpGrainHelp
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No | No | No | No | No | No |
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Spatial Grain Type
variable.detail.spGrainTypeHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Spatial Grain Size
variable.detail.spGrainSizeHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Spatial Density
variable.detail.spDensityHelp
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1,946 catchments across 1,220,000 km^2 | 1,946 catchments across 1,220,000 km^2 | 1,946 catchments across 1,220,000 km^2 | 1,946 catchments across 1,220,000 km^2 | 1,946 catchments across 1,220,000 km^2 | 1,946 catchments across 1,220,000 km^2 |
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EnviroAtlas URL
variable.detail.enviroAtlasURLHelp
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| Litter cover | Soil erosion potential | Vegetation ability to curb erosion | Vegetation cover | Area of soil retention | Hotspots of soil retention | |
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Temporal Extent
variable.detail.tempExtentHelp
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Not reported | Not reported | Not reported | Not reported | Not reported | Not reported |
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Temporally Distributed?
variable.detail.tempDistributedHelp
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No | No | No | No | No | No |
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Regular Temporal Grain?
variable.detail.regularTempGrainHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Temporal Grain Size Value
variable.detail.tempGrainSizeValHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Temporal Grain Size Units
variable.detail.tempGrainSizeUnitHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Temporal Density
variable.detail.tempDensityHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
| Litter cover | Soil erosion potential | Vegetation ability to curb erosion | Vegetation cover | Area of soil retention | Hotspots of soil retention | |
| Not reported |
Not applicable ?Comment:Eight erosion classes ranging from low to severe erosion potential |
Not applicable | Not reported |
Not applicable ?Comment:30% of the study area was covered by the range of soil retention |
Not applicable ?Comment:12% of the study area was covered by hotspots of soil retention |
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Min Value
variable.detail.minEstHelp
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Not reported | Not applicable | Not applicable | Not reported | Not applicable | Not applicable |
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Max Value
variable.detail.estHelp
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Not reported | Not applicable | Not applicable | Not reported | Not applicable | Not applicable |
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Other Value Type
variable.detail.natureOtherEstHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Reported total (units adjusted) | Reported total (units adjusted) |
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Other Value
variable.detail.otherEstHelp
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Not reported | Not applicable | Not applicable | Not reported | 30 | 10 |
| Litter cover | Soil erosion potential | Vegetation ability to curb erosion | Vegetation cover | Area of soil retention | Hotspots of soil retention | |
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Variability Expression Given?
variable.detail.variabilityExpHelp
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No | No | No | No | No | No |
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Variability Metric
variable.detail.variabilityMetricHelp
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None | None | None | None | None | None |
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Variability Value
variable.detail.variabilityValueHelp
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None | None | None | None | None | None |
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Variability Units
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None | None | None | None | None | None |
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Resampling Used?
variable.detail.bootstrappingHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Variability Expression Used in Modeling?
variable.detail.variabilityUsedHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
| Area of soil retention | Hotspots of soil retention | |
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Variable ID
variable.detail.varIdHelp
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1148 | 1149 |
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Validated?
variable.detail.resValidatedHelp
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Not applicable | Not applicable |
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Validation Approach (within, between, etc.)
variable.detail.validationApproachHelp
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None | None |
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Validation Quality (Qual/Quant)
variable.detail.validationQualityHelp
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None | None |
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Validation Method (Stat/Deviance)
variable.detail.validationMethodHelp
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None | None |
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Validation Metric
variable.detail.validationMetricHelp
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None | None |
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Validation Value
variable.detail.validationValHelp
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None | None |
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Validation Units
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None | None |
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Use of Measured Response Data
variable.detail.measuredResponseDataHelp
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None | None |