Difference between revisions of "STATSGO2-soil data"
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== Step 5: Karl's method for estimating soil properties using SDV == | == Step 5: Karl's method for estimating soil properties using SDV == | ||
1) Soil Qualities and Features: Depth To Selected Soil Restrictive Layer | 1) Soil Qualities and Features: Depth To Selected Soil Restrictive Layer | ||
| + | |||
Generate Depth for a) Dominant Condition b) Dominant Component c) Weighted Average d) All Layers | Generate Depth for a) Dominant Condition b) Dominant Component c) Weighted Average d) All Layers | ||
| − | 2) Soil Physical Properties: Saturated Hydraulic Conductivity | + | |
| − | 3) Soil Physical Properties: Percent Clay | + | Compare these to summer Landsat imagery and use expert judgment to determine the most believable layer |
| − | 4) Soil Physical Properties: Percent Sand | + | |
| − | 5) Soil Physical Properties: Percent Silt | + | ---- |
| − | 6) Soil Physical Properties: Surface Texture | + | |
| + | 2) Soil Physical Properties: Saturated Hydraulic Conductivity (RHESSys requires Ksat at surface) | ||
| + | |||
| + | Plot for each 100cm | ||
| + | |||
| + | 3) Soil Physical Properties: Percent Clay (used in RHESSys only for carbon cycling) | ||
| + | |||
| + | ---- | ||
| + | |||
| + | 4) Soil Physical Properties: Percent Sand (used in RHESSys only for carbon cycling) | ||
| + | |||
| + | ---- | ||
| + | |||
| + | 5) Soil Physical Properties: Percent Silt (used in RHESSys only for carbon cycling) | ||
| + | |||
| + | ---- | ||
| + | |||
| + | 6) Soil Physical Properties: Surface Texture (Karl uses for naming soil defs) | ||
Revision as of 18:15, 3 February 2010
Contents
Step 1: Get soil data
Download state data from here: [1]
Download county or survey level data from here: [2]
Both sources should include a) tabular data b) spatial data c) Microsoft Access template
Step 2: Soil Data Viewer
You need 1) Install ArcGIS 9.2 or later for soil data viewer 5.2 on a Windows XP system 2) Install soil data viewer version 5.2 [3]
Step 3: Prepare Access database
1) Open Access template 2) Enable macros 3) Type in full path name to tabular data 4) Import should run automatically
Step 4: Working with Soil Data Viewer in ArcGIS
1) Open ArcGIS - View > Toolbars > Soil Data Viewer Tools 2) Click on the Soil Data Viewer button 3) Browse to Access database 4) Choose the soil data layer to connect to the database
Soil data viewer online user guide is here: [4]
Step 5: Karl's method for estimating soil properties using SDV
1) Soil Qualities and Features: Depth To Selected Soil Restrictive Layer
Generate Depth for a) Dominant Condition b) Dominant Component c) Weighted Average d) All Layers
Compare these to summer Landsat imagery and use expert judgment to determine the most believable layer
2) Soil Physical Properties: Saturated Hydraulic Conductivity (RHESSys requires Ksat at surface)
Plot for each 100cm
3) Soil Physical Properties: Percent Clay (used in RHESSys only for carbon cycling)
4) Soil Physical Properties: Percent Sand (used in RHESSys only for carbon cycling)
5) Soil Physical Properties: Percent Silt (used in RHESSys only for carbon cycling)
6) Soil Physical Properties: Surface Texture (Karl uses for naming soil defs)
