Major dominant species and percent of roadside cover along nonpaved roads both treated and nontreated with MgCl2-based dust suppression products surveyed in Grand and Larimer Counties, Colorado.
| Species | Percent cover in each county | ||
|---|---|---|---|
| Common name | Grand | Larimer | |
| Pinus ponderosa | Ponderosa pine | — | 18.2 |
| Populus tremuloides | Trembling aspen | 18.8 | 17.1 |
| Pinus contorta | Lodgepole pine | 29.4 | 15.3 |
| Salix spp. | Willow | 11.6 | 7.8 |
| Artemesia tridentata | Big sagebrush | 14.8 | 0.3 |
| Chrysothamnus spp. | Rabbitbrush | 6.1 | 6.3 |
| Picea engelmannii | Engelmann spruce | 2.3 | 5.0 |
| Pseudotsuga menziesii | Douglas-fir | 1.2 | 4.9 |
| Alnus spp. | Alder species | 3.5 | 4.5 |
| Juniperus scopulorum | Rocky Mt. juniper | 4.0 | 3.4 |
| Abies lasiocarpa | Subalpine fir | 2.7 | 2.8 |
| Rhus trilobata | Skunkbush | — | 1.9 |
| Amelanchier alnifolia | Serviceberry | 1.6 | — |
| Populus angustifolia | Narrowleaf cottonwood | 1.2 | 1.8 |
| Pinus flexilis | Limber pine | 0.2 | 1.7 |
| Acer glabrum | Rocky Mt. maple | 0.3 | 1.4 |
| Atriplex confertifolia | Saltbush | — | 1.1 |