EcoService Models Library (ESML)
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Variables Details
: (EM-658)
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EM Identity and Description
EM-658 | |
Document Author
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Jackson, B., T. Pagella, F. Sinclair, B. Orellana, A. Henshaw, B. Reynolds, N. Mcintyre, H. Wheater, and A. Eycott |
Document Year
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2013 |
Variable General Info
Erosion/sediment delivery risk and opportunity for mitigation ?Comment:The transfer of eroded sediment to rivers and streams relies on the existence of hydrological connectivity between the point of origin and the watercourse (cf. Lane et al., 2009). Areas of land which are vulnerable to severe soil erosion and at risk of being linked to proximate watercourses by uninterrupted overland flow are identified in Polyscape by combining the CTI layer with the flood mitigation tool. Mapped results. Model output classifies elements (i.e., each grid of elevation data) within the landscape into one of five categories; very high existing value, high existing value, marginal value, opportunity for change or high opportunity for change. These classifications are visualised using a five-way colour system. The default palette uses a traffic light system; red colours suggest that stakeholders “STOP and think carefully before making any changes to the landscape at these locations”, yellow means “proceed with caution”, and green colours indicate a “green light to proceed with modifying the landscape”. |
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Variable ID
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15446 |
Not reported | |
Qualitative-Quantitative
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Qualitative (Class, Rating or Ranking) |
Cardinal-Ordinal
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Non-Ordinal |
Not applicable |
Variable Typology
Erosion/sediment delivery risk and opportunity for mitigation ?Comment:The transfer of eroded sediment to rivers and streams relies on the existence of hydrological connectivity between the point of origin and the watercourse (cf. Lane et al., 2009). Areas of land which are vulnerable to severe soil erosion and at risk of being linked to proximate watercourses by uninterrupted overland flow are identified in Polyscape by combining the CTI layer with the flood mitigation tool. Mapped results. Model output classifies elements (i.e., each grid of elevation data) within the landscape into one of five categories; very high existing value, high existing value, marginal value, opportunity for change or high opportunity for change. These classifications are visualised using a five-way colour system. The default palette uses a traffic light system; red colours suggest that stakeholders “STOP and think carefully before making any changes to the landscape at these locations”, yellow means “proceed with caution”, and green colours indicate a “green light to proceed with modifying the landscape”. |
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Predictor-Intermediate-Response
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Response |
Predictor Variable Type
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Not applicable |
Response Variable Type
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Computed Variable |
Data Source/Type
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Not applicable |
Variable Classification Hierarchy
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5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
--Physical/chemical characteristics of nonliving ecosystem components |
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----Physical/chemical characteristics of soils, substrates, rocks |
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------Soil, slope or land stability or erosiveness |
Variable Spatial Characteristics
Erosion/sediment delivery risk and opportunity for mitigation ?Comment:The transfer of eroded sediment to rivers and streams relies on the existence of hydrological connectivity between the point of origin and the watercourse (cf. Lane et al., 2009). Areas of land which are vulnerable to severe soil erosion and at risk of being linked to proximate watercourses by uninterrupted overland flow are identified in Polyscape by combining the CTI layer with the flood mitigation tool. Mapped results. Model output classifies elements (i.e., each grid of elevation data) within the landscape into one of five categories; very high existing value, high existing value, marginal value, opportunity for change or high opportunity for change. These classifications are visualised using a five-way colour system. The default palette uses a traffic light system; red colours suggest that stakeholders “STOP and think carefully before making any changes to the landscape at these locations”, yellow means “proceed with caution”, and green colours indicate a “green light to proceed with modifying the landscape”. |
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Spatial Extent Area
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10-100 km^2 |
Spatially Distributed?
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Yes |
Observations Spatially Patterned?
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Yes |
Spatial Grain Type
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area, for pixel or radial feature |
Spatial Grain Size
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Not reported |
Spatial Density
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Not applicable |
EnviroAtlas URL
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Variable Temporal Characteristics
Erosion/sediment delivery risk and opportunity for mitigation ?Comment:The transfer of eroded sediment to rivers and streams relies on the existence of hydrological connectivity between the point of origin and the watercourse (cf. Lane et al., 2009). Areas of land which are vulnerable to severe soil erosion and at risk of being linked to proximate watercourses by uninterrupted overland flow are identified in Polyscape by combining the CTI layer with the flood mitigation tool. Mapped results. Model output classifies elements (i.e., each grid of elevation data) within the landscape into one of five categories; very high existing value, high existing value, marginal value, opportunity for change or high opportunity for change. These classifications are visualised using a five-way colour system. The default palette uses a traffic light system; red colours suggest that stakeholders “STOP and think carefully before making any changes to the landscape at these locations”, yellow means “proceed with caution”, and green colours indicate a “green light to proceed with modifying the landscape”. |
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Temporal Extent
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1990-2007 |
Temporally Distributed?
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Not applicable |
Regular Temporal Grain?
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Not applicable |
Temporal Grain Size Value
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Not applicable |
Temporal Grain Size Units
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Not applicable |
Temporal Density
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Not applicable |
Variable Values
Erosion/sediment delivery risk and opportunity for mitigation ?Comment:The transfer of eroded sediment to rivers and streams relies on the existence of hydrological connectivity between the point of origin and the watercourse (cf. Lane et al., 2009). Areas of land which are vulnerable to severe soil erosion and at risk of being linked to proximate watercourses by uninterrupted overland flow are identified in Polyscape by combining the CTI layer with the flood mitigation tool. Mapped results. Model output classifies elements (i.e., each grid of elevation data) within the landscape into one of five categories; very high existing value, high existing value, marginal value, opportunity for change or high opportunity for change. These classifications are visualised using a five-way colour system. The default palette uses a traffic light system; red colours suggest that stakeholders “STOP and think carefully before making any changes to the landscape at these locations”, yellow means “proceed with caution”, and green colours indicate a “green light to proceed with modifying the landscape”. |
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Not applicable | |
Min Value
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Not applicable |
Max Value
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Not applicable |
Other Value Type
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Not applicable |
Other Value
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Not applicable |
Variable Variability and Sensitivity
Erosion/sediment delivery risk and opportunity for mitigation ?Comment:The transfer of eroded sediment to rivers and streams relies on the existence of hydrological connectivity between the point of origin and the watercourse (cf. Lane et al., 2009). Areas of land which are vulnerable to severe soil erosion and at risk of being linked to proximate watercourses by uninterrupted overland flow are identified in Polyscape by combining the CTI layer with the flood mitigation tool. Mapped results. Model output classifies elements (i.e., each grid of elevation data) within the landscape into one of five categories; very high existing value, high existing value, marginal value, opportunity for change or high opportunity for change. These classifications are visualised using a five-way colour system. The default palette uses a traffic light system; red colours suggest that stakeholders “STOP and think carefully before making any changes to the landscape at these locations”, yellow means “proceed with caution”, and green colours indicate a “green light to proceed with modifying the landscape”. |
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Variability Expression Given?
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Not applicable |
Variability Metric
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None |
Variability Value
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None |
Variability Units
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None |
Resampling Used?
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Not applicable |
Variability Expression Used in Modeling?
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Not applicable |
Variable Operational Validation (Response Variables only)
Erosion/sediment delivery risk and opportunity for mitigation | |
Variable ID
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15446 |
Validated?
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Not applicable |
Validation Approach (within, between, etc.)
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None |
Validation Quality (Qual/Quant)
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None |
Validation Method (Stat/Deviance)
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None |
Validation Metric
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None |
Validation Value
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None |
Validation Units
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None |
Use of Measured Response Data
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None |