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Author: David N. Wear
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 104
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Book Description
Forces of change; Social and economics systems; Forest area conditions; Terrestrial ecosystems; Water quality, wetlands, and aquatic ecosystems.
Author: David N. Wear
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 104
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Book Description
Forces of change; Social and economics systems; Forest area conditions; Terrestrial ecosystems; Water quality, wetlands, and aquatic ecosystems.
Author: United States. Forest Service
Publisher:
ISBN:
Category : Forest policy
Languages : en
Pages : 240
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Book Description
Combined reports of: Report to Congress and Report for the Secretary of Agriculture.
Author: Gerald W. Williams
Publisher:
ISBN:
Category : Forest policy
Languages : en
Pages : 164
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Book Description
Author: Therese M. Poland
Publisher: Springer Nature
ISBN: 3030453677
Category : Science
Languages : en
Pages : 484
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Book Description
This open access book describes the serious threat of invasive species to native ecosystems. Invasive species have caused and will continue to cause enormous ecological and economic damage with ever increasing world trade. This multi-disciplinary book, written by over 100 national experts, presents the latest research on a wide range of natural science and social science fields that explore the ecology, impacts, and practical tools for management of invasive species. It covers species of all taxonomic groups from insects and pathogens, to plants, vertebrates, and aquatic organisms that impact a diversity of habitats in forests, rangelands and grasslands of the United States. It is well-illustrated, provides summaries of the most important invasive species and issues impacting all regions of the country, and includes a comprehensive primary reference list for each topic. This scientific synthesis provides the cultural, economic, scientific and social context for addressing environmental challenges posed by invasive species and will be a valuable resource for scholars, policy makers, natural resource managers and practitioners.
Author:
Publisher:
ISBN:
Category : Forest reserves
Languages : en
Pages : 138
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Book Description
Author: Richard A. Birdsey
Publisher:
ISBN:
Category : Atmospheric carbon dioxide
Languages : en
Pages : 60
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Book Description
Author: David N. Wear
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 116
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Book Description
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 294
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Book Description
The built environment, as used in this guide, refers to the administrative and recreation buildings, landscape structures, site furnishings, structures on roads and trails, and signs installed or operated by the U.S. Department of Agriculture (USDA) Forest Service, its cooperators, and permittees.
Author:
Publisher:
ISBN:
Category : Forest health
Languages : en
Pages : 96
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Book Description
The Forest Inventory and Analysis (FIA) Program of the U.S. Department of Agriculture, Forest Service is in the process of moving from a system of quasi-independent, regional, periodic inventories to an enhanced program featuring greater national consistency, a complete and annual sample of each State, new reporting requirements, and integration with the ground sampling component of the Forest Health Monitoring Program. This documentation presents an overview of the conceptual design, describes the sampling frame and plot configuration, presents the estimators that form the basis of FIA's National Information Management System (NIMS), and shows how annual data are combined for analysis. It also references a number of Web-based supplementary documents that provide greater detail about some of the more obscure aspects of the sampling and estimation system, as well as examples of calculations for most of the common estimators produced by FIA.
Author: James E. Pollard
Publisher:
ISBN:
Category : Forest surveys
Languages : en
Pages : 52
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Book Description
The Forest Inventory and Analysis program (FIA) is the key USDA Forest Service (USFS) program that provides the information needed to assess the status and trends in the environmental quality of the Nation's forests. The goal of the FIA Quality Assurance (QA) program is to provide a framework to assure the production of complete, accurate and unbiased forest information of known quality. Specific Measurement Quality Objectives (MQO) for precision are designed to provide a window of performance that we are striving to achieve for every field measurement. These data quality goals were developed from knowledge of measurement processes in forestry and forest ecology, as well as the program needs of FIA. This report is a national summary and compilation of MQO analyses by regional personnel and the National QA Advisor. The efficacy of the MQO, as well as the measurement uncertainty associated with a given field measurement, can be tested by comparing data from blind check plots where, in addition to the field measurements of the standard FIA crew, a second QA measurement of the plot was taken by a crew without knowledge of the first crew's results. These QA data were collected between 2000 and 2003 and analyzed for measurement precision between FIA crews. The charge of this task team was to use the blind-check data to assess the FIA program's ability to meet data quality goals as stated by the MQO. The results presented indicate that the repeatability was within project goals for a wide range of measurements across a variety of forest and nonforest environments. However, there were some variables that displayed noncompliance with MQO goals. In general, there were two types of noncompliance: the first is where all the regions were below the MQO standard, and the second is where a subset of the regions was below the MQO standards or was substantially different from the other remaining regions. Results for each regional analysis are presented in appendix tables. In the course of the study, the task team discovered that there were difficulties in analyzing seedling species and seedling count variables for MQO compliance, and recommends further study of the issue. Also the task team addresses the issue of trees missed or added and recommends additional study of this issue. Lastly, the team points out that traditional MQO analysis of the disturbance and treatment variables may not be adequate. Some attributes where regional compliance rates are dissimilar suggest that regional characteristics (environmental variables such as forest type, physiographic class, and forest fragmentation) may have an impact on the ability to obtain consistent measurements. Additionally, differences in data collection protocols may cause differences in compliance rates. For example, a particular variable may be measured with a calibrated instrument in one region, while ocularly estimated in another region.
