Boggs Mountain Demonstration State Forest Draft ... - Cal Fire

More documents

Recommendations

Info

Boggs Mountain Demonstration State Forest Draft Management Plan, June 2008 Table 1. Site Classes for BMDSF. Dunning Site Class 50-year Breast High Age Average Site Index (Krumland Percent of Forest and Eng, 2005) IA 91 5 I 83 84 II 72 8 III 46 3 Forest Inventory and Growth Measurements of vegetation resources on Boggs Mountain, including timber volume and growth, are derived primarily from a system of plots referred to as the BMDSF Continuous Forest Inventory (CFI). The CFI consists of a 17 chains by 17 chains grid of 114 permanent plots, 108 of the plots are on areas that support growth of commercial conifer species. Plots are measured every five years. The permanent CFI plots consist of a fixed 1/100-acre plot nestled in a 20 basal area factor variable plot. Trees over 4.5 feet tall and under 5 inches in diameter at breast height (DBH) are tallied by species in the 1/100 acre plots. All "In" trees in the variable plots are measured at breast height. The 1976 timber inventory measured the gross timber volume as 34,599,286 board feet on 3,464 acres (9,988 bf/ac). The 2001 timber inventory measured the gross timber volume as 47,105,623 board feet on 3,493 acres (13,485 bf/ac). Total current forest volume is measured at 51,911,602 bf (14,862 bf/ac). Hardwood volume is 1,757,356 cubic feet. Volumes were calculated using volume equations developed for BMDSF by Pillsbury and Pryor (1991). Following the 1976 inventory, the annual board foot volume growth on the Forest was measured at 1,101,418 board feet, or 334 board feet per acre per year. Based on 1996 through 2006 CFI measurements, current forest growth is measured at 357 board feet per acre per year. These figures are considered to be highly accurate, as they are based on actual measurements and not a projection from yield tables. Soils The USDA Soil Conservation Service surveyed and mapped the soils on Boggs Mountain in the early 1980’s. Soil maps and descriptions are found in the 1989 publication “Soils Survey of Lake County.” The soils on Boggs Mountain are moderately deep to very deep, well-drained very gravelly loam and loam derived mainly from the Mountain's lava cap of andesite, basalt, and dacite. Igneous rock derived Aiken and Collayomi soils are the Forest's most productive soils. A limited amount of timber soils and most of the non-timber soils are derived from Great Valley formation sandstone or shale parent materials. Sanhedrin, Whispering, Speaker, and Marpa are lower site timber soils. Maymen, Estel, Snook, Hopland, Mayacoma, Millsholm, and Bressa soils are non-timber soils. 16
Boggs Mountain Demonstration State Forest Draft Management Plan, June 2008 Table 2. Soil Series on BMDSF. Soil Series No. Name Parent Material Slope Range (percent) Acres Dominant Vegetation 126 Collayomi Complex 127. Collayomi-Aiken- Whispering Complex 128. Collayomi-Aiken- Whispering Complex 129. Collayomi- Whispering Complex 224. Speaker-Marpa- Sanhedrin Complex 245. Whispering- Collayomi Complex Andesite, Basalt, Dacite 50-75 71 Ponderosa pine, Black oak, Douglasfir, Sugar pine 5-30 1917 Ponderosa pine, Black oak, Sugar pine, Douglas-fir " 30-50 712 Ponderosa pine, Black oak, Sugar pine, Douglas-fir " 30-50 437 Ponderosa pine, Black oak, Sugar pine, Douglas-fir Sandstone 30-50 106 Ponderosa pine, Douglas-fir, Black oak, Live oak Andesite, Basalt, Dacite Timber Soil Totals 3321 168. Maymen-Estel- Snook Complex 169. Maymen-Estel- Snook Complex 173. Maymen- Hopland- Mayacama Association 174. Maymen- Hopland- Mayacama Association 175. Maymen- Millsholm-Bressa Complex 177. Millsholm-Bressa Loams 178. Millsholm- Bressa-Hopland Association 50-75 78 Ponderosa pine, Black oak, Sugar pine Sandstone , Shale 15-30 56 Chamise, Manzanita, Buckbrush " 30-75 21 Chamise, Manzanita, Buckbrush " 30-50 52 Chamise, Manzanita, Buckbrush, Black oak, Madrone, Live oak. Scattered Douglas-fir and Laurel " 50-75 5 Chamise, Manzanita, Buckbrush, Black oak, Madrone, Live oak. Scattered Douglas-fir and Laurel " 30-50 6 Chamise, Manzanita, Buckbrush, sometimes Blue oak " 30-50 5 Blue oak, Grass " 30-50 27 Blue oak, Grass NONTIMBER SOILS TOTAL 172 17
Page 1 and 2: Boggs Mountain Demonstration State
Page 15: Boggs Mountain Demonstration State
Page 67 and 68:
Boggs Mountain Demonstration State
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91:
show all

Boggs Mountain Demonstration State Forest Draft ... - Cal Fire

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?