Native West Virginian
B.S. in Forest Resource Management
Seeking M.S. Forestry
Very interested in Forestry and GIS Analysis!
Soil movement can cause lots of damage especially when its moving into water resources.
Pollution of streams, Raise flood levels, Raise stream temperatures, Degrade site/stream quality and Productivity, and reduce navigational abilities.
Sediment created from Silvicultural
Operations is the issue at hand.
Soil Movement, specifically sedimentation, is very detrimental to streams and forested sites.
Pollution to Water Resources
Site Degradation-Both Environmentally and Aesthetically
Habitat and Productivity Loss-Both Onsite and Downstream
Assess Best Management Practices (BMP) Functionality
GOAL: FIND SIGNIFICANT SOIL MOVEMENT
CONTRIBUTORS and IDENTIFY DIFFERENCES
Two Watersheds located in Tucker County, WV
Both Similar in
Study designed to evaluate soil movement and it’s relation to logging.
Two Watersheds (Control and Treatment)
Silt-fence Installed around all Streams
Material Removed Once a Year
Extensive Mapping Procedures
Classification/Regression Trees to Model and/or Predict Sedimentation
Burn sub-samples, calculate average percent mineral (Mostly Organic)
Apply average percent to predominantly organic fraction weight
Mineral associated with predominantly organic fraction
Manually separate predominantly mineral from predominantly organic
Place in water
Oven Dry and Burn Pour off and discard
Mineral associated with predominantly mineral fraction
Use GIS to identify Landscape elements in each watershed that contribute to soil movement. (i.e.
Disturbance, Moisture, Slope, Soil Types, etc…)
Calculations: Derived From Digital Elevation Map
Slope, Aspect, Flow Direction, Flow Accumulation, Moisture
Index, Distance Grids (from road, from stream, etc.), Soils,
Analysis Performed Using Various Extensions of the
ESRI ArcMap 9.1 GIS program. As well as the newly developed
and Aerial Photography from the WV GIS Tech-center.
Statistical Method-Classification Trees
R Statistical Package
Digital Elevation Map (DEM) 3-Meter
Spatial Analysis Toolbar
Slope Grid Distance
Inputs --Tools ---
Output Grids ---
Sediment Reaching Silt-fence=
F (Slope, Distance From Silt-fence, Distance
From Disturbance, Distance From Slope
Breaks, Moisture, Aspect, Accumulation, Soil
Type, Vegetation, Land-use, )
Very Dynamic Subject
This index assumes that the relative moisture in a particular area (in this case a grid cell) primarily depends on two factors;
How much water is flowing into the area and how fast the water can flow out of the area.
Ln [(catchment area + 1) / (slope + 1)]
The created index is a relative one so the numbers don’t represent any type of units.
Higher Positive Numbers are Wetter
Lower Negative Numbers are Drier
Classification Tree Modeling Technique
Statistical Analyses (S-plus and R Statistics Systems)
Refining of Classification Tree Modeling
Key to possibly modeling the soil movement or sedimentation
According to the Statistical Modeling: R
Slope is the most important variable
Moisture- +3.62 (Range -4.3
– Combined Grids Using Raster Calculator
Model Refinement to Include more Variables
3-Meter DEM much higher accuracy!
1:4800 scale aerial photography gives great visual representation!
Leads to more thorough analysis.
Detailed 3-D Representation.
Hydrology Tools Very Influential
Upon Completion of Analyses:
Identify Contributors to Soil Movement
Order there level of Importance
Assess current Best Management Practices (BMP)
Model/Predict Soil Loss
(Grayson et al. 1992; Mitasova 1996; Moore, I. D. et al. 1988; Boer et al. 1996, O’Loughlin 1986, Parker 1982)