Table 3.
Land cover types found on the five wine grape-growing ranches in Mendocino County, California, considered in this study
| Number of Vegetation Plots | Number of Soil Pits | Habitat Type | Elevation (meters) | Slope (degrees) | Solar Radiation (W-hr/m2/yr) |
|---|---|---|---|---|---|
| 0 | 19 | Vineyard I | 173 | 0.7 | 2.18*106 |
| 0 | 6 | Vineyard II | 572 | 10.7 | 1.99*106 |
| 0 | 2 | Annual Grassland | 213 | 5.0 | 2.27*106 |
| 17 | 1 | Valley Riparian | 152 | 0.4 | 2.18*106 |
| 39 | 2 | Mixed Hardwoods I | 534 | 21.3 | 1.97*106 |
| 26 | 13 | Mixed Hardwoods II | 225 | 10.7 | 2.16*106 |
| 11 | 1 | Mixed Conifer-Hardwood | 407 | 25.8 | 2.06*106 |
The classification process consisted of a partitioning around mediod (PAM) analysis, which used 1013 random points and binned them into similar groups based on four variables: land cover; elevation; slope; and solar radiation (see methods).