Author: Susan J. Crocker
Publisher:
ISBN:
Category : Forest surveys
Languages : en
Pages : 34

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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 42

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Author: John S. Spencer
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 100

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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 4

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Author: Usda Forest Service
Publisher: Forgotten Books
ISBN: 9780365745839
Category : Business & Economics
Languages : en
Pages : 94

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Book Description
Excerpt from Iowa's Forests, 1999-2003: Part A The demands placed on forest resources will continue to increase, as will biological threats from nonnative plants and insects. The challenge is to maintain Iowa's forests in such a way that they are available for use and enjoyment today and for future generations. Reporting on trends in the condition and status of forest resources is critical in determining whether they are being used or maintained in a sustainable way. The usda Forest Service's Forest Inventory and Analysis program in partnership with the Iowa Department of Natural Resources' Bureau of Forestry inventoried Iowa's forest resources in 1954, 1970, and 1990. Beginning in 1999, annual inventories were conducted such that a portion of field plots was inventoried each year. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Author: Susan J. Crocker
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 36

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Author:
Publisher:
ISBN:
Category : Forest surveys
Languages : en
Pages : 48

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The second full annual inventory of Iowa's forests (2004-2008) reports more than 3 million acres of forest land, almost all of which is timberland (98 percent), with an average volume of more than 1,000 cubic feet of growing stock per acre. American elm and eastern hophornbeam are the most numerous tree species, but silver maple and bur oak predominate in terms of live tree volume. Iowa's forest land is comprised of 65 percent sawtimber, 19 percent poletimber, and 16 percent sapling/seedling or nonstocked size classes. Average annual net growth of growing-stock trees on Iowa's timberland increased during the past decade to the current estimate of nearly 105 million cubic feet. This report includes additional information on forest attributes, land use change, carbon, timber products, and forest health. A DVD included in this report includes 1) descriptive information on methods, statistics, and quality assurance of data collection, 2) a glossary of terms, 3) tables that summarize quality assurance, 4) a core set of tabular estimates for a variety of forest resources, and 5) a Microsoft Access database that represents an archive of data used in this report, with tools that allow users to produce customized estimates.

Author:
Publisher:
ISBN:
Category : Forest conservation
Languages : en
Pages : 20

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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1122

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Author: Mark David Nelson
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 4

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