Table 2

Coefficients of determination (R²) for species-specific regression equations fitting aboveground woody carbon and basal area to topographic, vegetation, soil and landscape variables (see methods)

Biomass Ranking

Species

Carbon - R²

Basal Area - R²

1

Quercus kelloggii

0.203

0.262*

2

Q. wislizenii

0.103

0.118

3

Q. lobata

0.143

0.176

4

Q. douglasii

0.385***

0.379***

5

Arbutus menziesii

0.279**

0.300**

6

Acer negundo

0.307**

0.359***

7

Populus species

0.307**

0.350***

8

Salix species

0.515***

0.538***

9

Umbellularia californica

0.113

0.119

10

Q. species

0.103

0.069

11

Q. chrysolepis

0.217

0.221*

12

Pseudotsuga menziesii

0.051

0.079

13

Aesculus californica

0.186

0.186

14

Alnus rhombifolia

0.278**

0.310**

p-values: * < 0.05; ** < 0.01; *** < 0.001

Listed by rank are the 14 tree species that contribute most to total aboveground woody biomass estimated for sample plots in wildlands surrounding vineyards on five ranches in Mendocino County, California.

Williams et al. Carbon Balance and Management 2011 6:11   doi:10.1186/1750-0680-6-11