Assessment of carbon in woody plants and soil across a vineyard-woodland landscape

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).

ISSN: 1750-0680