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Author: United States Department of Agriculture Publisher: CreateSpace ISBN: 9781508998709 Category : Languages : en Pages : 92
Book Description
In 2000, the Pennsylvania Department of Conservation's Natural Resources, Bureau of Forestry and the Northern Research Station's Forest Inventory and Analysis unit implemented a new annual system for inventorying and monitoring Pennsylvania's forests. This report includes data from 2000 to 2004. Pennsylvania's forest-land base is stable, covering 16.6 million acres or 58 percent of land area. More than 660,000 acres of forest land were lost from 1989 to 2004, mostly to residential or industrial development. However, there was a 617,500-acre gain in forest land, mostly from agricultural land. Fifty-four percent of forest land is owned by families and individuals.
Author: United States Department of Agriculture Publisher: CreateSpace ISBN: 9781508998709 Category : Languages : en Pages : 92
Book Description
In 2000, the Pennsylvania Department of Conservation's Natural Resources, Bureau of Forestry and the Northern Research Station's Forest Inventory and Analysis unit implemented a new annual system for inventorying and monitoring Pennsylvania's forests. This report includes data from 2000 to 2004. Pennsylvania's forest-land base is stable, covering 16.6 million acres or 58 percent of land area. More than 660,000 acres of forest land were lost from 1989 to 2004, mostly to residential or industrial development. However, there was a 617,500-acre gain in forest land, mostly from agricultural land. Fifty-four percent of forest land is owned by families and individuals.
Author: William H. McWilliams Publisher: ISBN: Category : Forest ecology Languages : en Pages : 86
Book Description
In 2000, the Pennsylvania Department of Conservation's Natural Resources, Bureau of Forestry and the Northern Research Station's Forest Inventory and Analysis unit implemented a new annual system for inventorying and monitoring Pennsylvania's forests. This report includes data from 2000 to 2004. Pennsylvania's forest-land base is stable, covering 16.6 million acres or 58 percent of land area. More than 660,000 acres of forest land were lost from 1989 to 2004, mostly to residential or industrial development. However, there was a 617,500-acre gain in forest land, mostly from agricultural land. Fifty-four percent of forest land is owned by families and individuals. Forest types with red maple as a dominant species have increased, while stands with sugar maple as a dominant have decreased. The distribution of forest land by stand-size class has been shifting toward large stands that now account for 6 of 10 acres. The area of forest has increased in the poor and moderate stocking classes and decreased in the full and overstocked classes. Hemlock, sugar maple, and oaks are poised to be less dominant in the future. Increases in red maple are slowing while black birch continues to increase. Sawtimber volume totals 88.9 billion board feet, an average of about 5,000 board feet per acre. Increases in sawtimber inventory have slowed over time. Currently, only half of the forest land that should have advance regeneration is adequately stocked with high-canopy species, and only one-third has adequate regeneration for commercially desirable timber species. Grass/forb and rhizomous ferns dominate understory communities, accounting for nearly one-third of the total nontree vegetative cover sampled. Several exotic diseases and insects threaten the health of Pennsylvania's forests. Exoticinvasive plants threaten native plant diversity and forest health; however, monitoring efforts are only beginning to quantify their distribution and abundance. Stressors such as drought, acidic deposition, and ground-level ozone pollution are adversely affecting the State's forests. Continued monitoring is required to gain a more complete understanding of these impacts on this valuable resource.
Author: Ann Fowler Rhoads Publisher: University of Pennsylvania Press ISBN: Category : Nature Languages : en Pages : 424
Book Description
Authoritative, encyclopedic, lavishly illustrated guide to the trees of the state and region—from the Morris Arboretum, the official arboretum of the Commonwealth of Pennsylvania.
Author: Charles Fergus Publisher: Stackpole Books ISBN: 9780811720380 Category : Nature Languages : en Pages : 232
Book Description
Throughout Pennsylvania, within the state forest system, are 61 officially designated Natural Areas, each offering a bit of wildness deemed worthy of protection: rare-bird breeding sites, stands of old-growth trees, fragile wetlands, ice age remnants, mineral-rich mountainsides. To experience first-hand the unique features of each natural area, nature writer Charles Fergus spent a year visiting all 61. In this information-filled book, he reports on what he found, offering readers a guided tour of some of natural Pennsylvania's most distinctive places. He also provides information on how to visit the areas, each of which is open to the public.
Author: United States Department of Agriculture
Author: United States Department of Agriculture
Author: William H. McWilliams
Author: William H. McWilliams
Author: 
Author: Pennsylvania. Dept. of Forests and Waters
Author: Ann Fowler Rhoads
Author: Pennsylvania Forestry Association
Author: Charles Fergus
Author: 
Author: Pennsylvania. Department of Forestry