Silvicultural system

U.S. Department of Agriculture. Forest Service. Silvicultural Systems for the Major Forest Types of the United States. Agriculture Handbook 445. Washington, D.C. U.S. Department of Agriculture, 1973. 114 pp. 

If current techniques become too costly or otherwise impractical silviculturists will be forced to rely upon the natural resistance of some species, or to select alternative silvicultural systems. This will require improved understanding of the allelopathic phenomenon and some alteration in the selection of species. 

A review of silvicultural systems for Picea sitchensis in the UK (Macdonald and Hubert, 2002) provides further examples of product push with low valued pallets, packaging and fencing absorbing two-thirds of production - and Sitka spmee is classified as non-durable and resistant to treatment. 

Table 5.6. Typical silvicultural system for loblolly pine, Pinus taeda, in Brazil on a high productivity site, with an initial stocking of 1111 stems/hectare.

Silvicultural Systems for the Energy Efficient Production of Fuel Biomass... 

LEDIG Silvicultural Systems for Fuel from Biomass... 

Burns, R.M. (tech, compiler). 1983. Silvicultural systems for the major forest types of the United States. USDA Agric. Handbook 445. Washington, DC. 191 pp. 

Fire is essential to the maintenance of western larch in natural populations. High-intensity fires thin stands, reduce fuels, and prepare seedbeds that promote establishment of shade-intolerant conifers, particularly the western larch. Without fire, shade-tolerant associates eventually replace the larch (Schmidt and Shearer, 1990). Even-aged silvicultural systems best fit the ecological requirements of western larch. These systems provide an adequate seed source and the microsite conditions needed for establishment. Site preparation of prescribed burning or scarification to reduce the duff layers and vegetative competition is often necessary for its successful regeneration (Bums, 1983). 

Johnston, W.F., and T.M. Smith. 1983. Black spruce. Pp 96-98 in R.M. Burns(ed.), Silvicultural systems for major forest types of the United States. USDA For. Serv. Agric. Handbook no. 445, 193 pp. 

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