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 Metrics > Riparian Characteristics > Metric Map (rbar0), Quantile, Methodology and Interpretation
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QUANTILE

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Natural Breaks
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Methodology and Interpretation

RBAR0 - Percent barren adjacent to streams
The percentage of barren land cover adjacent to streams is calculated by dividing the number of barren land cover cells underneath stream segments in the 3 km grid cell reporting unit and dividing by the stream corridor's total land area (total number cells underneath stream segments minus those classified as water). This metric can be used to identify areas bordering streams which may be more susceptible to increased water run off which may in turn cause soil loss and stream and lake sedimentation.

Metric Map (rbar0), Quantile Metric Map (rbar0), Natural Breaks

Quantile: Each class contains an approximately equal number (count) of features. A quantile classification is well-suited to linearly distributed data. Because features are grouped by the number within each class, the resulting map can be misleading, in that similar features can be separated into adjacent classes, or features with widely different values can be lumped into the same class. This distortion can be minimized by increasing the number of classes.

Natural Breaks: Classes are based on natural groupings of data values. Natural break points are identified by looking for groupings and patterns inherent in the data. The features are divided into classes whose boundaries are set where there are relatively large jumps in the distribution of data values.

* EMAP-West Landscape Metrics Metadata (FGDC)

 

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