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General Technical Report NC

United States. Forest Service
General Technical Report NC by United States. Forest Service PDF

Author : United States. Forest Service
Publisher :
Page : pages
File Size : 48,79 MB
Release : 1972
Category :
ISBN :

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The Enhanced Forest Inventory and Analysis Program--national Sampling Design and Estimation Procedures

The Enhanced Forest Inventory and Analysis Program--national Sampling Design and Estimation Procedures by PDF

Author :
Publisher :
Page : 96 pages
File Size : 50,70 MB
Release : 2005
Category : Forest health
ISBN :

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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.

Field Guide for the Identification of Invasive Plants in Southern Forests

James H. Miller
Field Guide for the Identification of Invasive Plants in Southern Forests by James H. Miller PDF

Author : James H. Miller
Publisher : DIANE Publishing
Page : 136 pages
File Size : 43,22 MB
Release : 2011-08
Category : Science
ISBN : 1437987451

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Invasions of non-native plants into forests of the Southern United States continue to go unchecked and only partially un-monitored. These infestations increasingly erode forest productivity, hindering forest use and management activities, and degrading diversity and wildlife habitat. Often called non-native, exotic, non-indigenous, alien, or noxious weeds, they occur as trees, shrubs, vines, grasses, ferns, and forbs. This guide provides information on accurate identification of the 56 non-native plants and groups that are currently invading the forests of the 13 Southern States. In additin, it lists other non-native plants of growing concern. Illustrations. This is a print on demand edition of an important, hard-to-find publication.