Area	Basin-wide/Regional
Topic	Timber Harvest: Silvicultural Prescriptions, 1983-2001

 

Caption:  The chart above shows the silvicultural prescriptions used in Timber Harvest Plans (THPs) in the Mattole River Basin between 1983 and 2001. Each silvicultural prescription is displayed as percent of the total acres of THPs approved during the period. Clearcut (27%), Shelterwood Remv. Cut (20%), and Rehabilitation (12%) were the harvest types most widely used during this period. These data were compiled from records of THPs approved by the California Department of Forestry, but the plans were not necessarily implemented. Areas were summed without subtracting for overlapping THPs, and do not include harvest from plans approved in 1977-1982 yet delayed for up to five years. Click on the Picture Tab to see THP and digital orthophoto quadrangle images. For links to more discussion on this topic, see Info Links. The four letter acronym for prescription are as follows (press F7 for best view): CLCT = Clearcut SHSC = Shelterwood Seed Cut SHRC = Shelterwood Remv. Cut SHPC = Shelterwood Prep Cut STSC = Seed Tree Seed Cut STRC = Seed Tree Remv. Cut SLCN = Selection CMTH = Commercial Thin SASV = Sanitation Salvage REHB = Rehab of Under stocked ALPR = Alternative Prescrip. TRAN = Transition OUT = Not part of THP NHRV = No Harvest Area

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To learn more about this topic click Info Links .
To view a table of information about this data click Metadata .
To view the table with the chart's data, click Chart Table web page.
To download the table with the chart's data, click thp_mat_silvtyp.dbf (size 12,696 bytes) .
To view the table with the chart's source data, click Source Table web page.
To download the table with the chart's source data, click thp_mat_silvtyp_source.dbf (size 10,274 bytes)
 
 

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