Forest statistics for Maryland, 1976 and 1986 /

Abstract

Biomass 1 Timber Volume * Ninety percent of Maryland's timberland is privately owned. Biomass * Dry weight tables are available for the first time. * The net green weight of all live trees on timberland is 260.1 million tons or 107.3 tons per acre. Softwoods account for 36.9 million tons or 15.3 tons per acre; hardwoods account for 223.1 million tons or 92 tons per acre. * A little more than 1 67 million tons, or 64 percent of the net green weight of all * Loblolly pine is the top softwood species with 472 million cubic feet or 1 0.5 Growth/Removals * Average annual net growth of growing-stock volume in Maryland is 3.8 percent of the inventory. * Average annual net cubic-foot growth of growing-stock volume exceeded removals on a statewide basis (1 .7:1); however, removals exceeded growth on the Lower Eastern Shore for both softwoods and hardwoods. data helps users interested in more precise local data, but can make comparisons with past county estimates developed by the proration technique uncertain. Definition of Terms Acceptable tree, (a) Live sawtimber trees that do not qualify as preferred trees but are not cull trees, (b) Live poletimber trees that prospectively will not qualify as preferred trees, but are not now or prospectively cull trees. Accretion. The estimated net growth on growingstock trees that were measured during the previous inventory, divided by the number of growing seasons between inventorys. It does not include the growth on trees that were cut during the period, nor those trees that died. Agricultural/herbaceous land. Land with herbaceous plant cover, both grasses and/or forbs, including cropland, pasture land, and natural grass lands. Aquatic edge. An edge condition created when a terrestrial land use abuts a lake, pond, river, stream, or major wetland. Basal area class. A classification of forest land in terms of basal area (cross sectional area of a tree stem at breast height in square feet per acre) of all live trees of ail sizes. Board foot. A unit of lumber measurement 1 foot long, 1 foot wide, and 1 inch thick, or its equivalent. Board-foot stand-volume class. A classification of forest land in terms of net board-foot volume of sawtimber trees per acre. Bog/Marsh/Swamp. Land that has less than 10.0 percent stocking with live trees; and which characteristically supports low, generally herbaceous or shrubby vegetation, and which is intermittently covered with water during all seasons; includes tidal areas that are covered with salty or brackish water during high tides. Browse. Forage resource; defined here as current twig growth of woody-stemmed plants occurring between 1 and 8 feet in height. Cabin log. A relatively slender roundwood product that is cut to standard sizes; meets specifications of strength, straightness, and soundness; and is finished for use in constructing cabins, barns, and other buildings. Coarse residues. Manufacturing residues suitable for chipping, such as slabs, edgings, and veneer cores. Commercial species. Tree species presently or prospectively suitable for i...

Forest statistics for Maryland: 1986 and 1999

“…As a result Of ongoing efforts to improve the efficiency of the inventory, we have made several changes in procedures and definitions since 1986. Because these changes make it inappropriate to compare some of the current estimates with those published by Frieswyk and DiGiovanni (1988), users should use caution when comparing the data in this report with those in the 1986 report. In this report, several tables containing 1986 data are provided to allow comparisons.…”

Maryland's Forests 2008

“…Stn. 1955), 1964(Ferguson 1967), 1976(Powell and Kingsley 1980), 1986(Frieswyk and DiGiovanni 1988, and 1999 (Frieswyk 2001). This report focuses on data collected from 2004 to 2008, hereafter referred to as the 2008 inventory.…”