Download or read book Test of Four Stand Growth Simulators for the Northeastern United States written by Thomas M. Schuler and published by . This book was released on 1993 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: SILVAH, FIBER, NE-TWIGS, and OAKSIM simulators, commonly used in the northeastern United States, were evaluated by comparing predicted stand development with actual stand development records for periods ranging from 15 to 50 years. Results varied with stand parameter, forest type, projection length, and geographic area. Except in the spruce-fir forest type where FIBER stands out as the best simulator, no single simulator is clearly superior to the others for all locations within a forest type. In general, FIBER, NE-TWIGS, and SILVAH performed best in the northern hardwood (beech- birch-maple) forest type; NE-TWIGS and SILVAH performed best in the Allegheny hardwood (cherry-maple) forest type; SILVAH and OAKSIM performed best in the oak- hickory forest type; and SILVAH was most suitable in the transition hardwood (mixture of northern hardwoods and oaks) forest type. The results give growth and yield model users more information for selecting the simulator most suitable for their particular needs. The results also can be used as a diagnostic tool for growth and yield model development.
Download or read book Individual tree Diameter Growth Model for Northeastern United States written by Richard M. Teck and published by . This book was released on 1991 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: S2Describes a species-specific, distance-independent individual-tree diameter growth model for the Northeastern United States. Diameter growth is predicted in two steps using a two parameter, sigmoidal growth function modified by a one parameter exponential decay function with species-specific coefficients. Coefficients are presented for 28 species groups. The model accounts for variability in annual diameter growth due to species, tree size, site quality, and the tree's competitive position within the stand. Model performance is evaluated using the mean predicted error and the root mean square error. Results are presented for the calibration data and an independent validation data set. The model has been, incorporated into NE-TWIGS, a computerized forest growth model for the Northeastern United States.S3.
Download or read book Research Paper NE written by and published by . This book was released on 1987 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book West Virginia Yellow poplar Lumber Defect Database written by Lawrence E. Osborn and published by . This book was released on 1992 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: S2In West Virginia, yellow-poplar (Liriodendron tulipifera) is abundant and is a prime candidate for increased utilization in a variety of manufacturing industries. Computer simulations are a cost-effective tool for estimating potential cutting yields from lumber. They can be used to promote increased use of yellow-poplar in the furniture, cabinet, and architectural woodworking industries and may also lead to increased utilization of the lower grades of lumber. This paper describes the data collection methods and the format of the new West Virginia yellow-poplar lumber defect database that was developed for use with computer simulation programs. The database contains descriptions of 627 boards, totaling approximately 3,800 board feet, collected in West Virginia for grades FAS, FASIF, No. 1 Common, No. 2A Common, and No. 28 Common.S3.
Download or read book Publications of the Northeastern Forest Experiment Station 1993 and 1994 written by Northeastern Forest Experiment Station (Radnor, Pa.) and published by . This book was released on 1996 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factors Affecting Recreation Participation by Vermont Residents written by Thomas A. More and published by . This book was released on 1990 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: Long-term recreation planning requires an understanding of recreation participation patterns. This study examined Vermonters' participation in 27 leisure activities from three domains (outdoor, resource based, and indoor) to see how such participation differed in each domain. Indoor activities were the most popular, followed by resource-based activities and general outdoor activities. Overall participation declined with age, though this effect was mitigated somewhat for older parents. Other socioeconomic and demographic variables had limited effects on participation.
Download or read book General Technical Report NE written by and published by . This book was released on 1980 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings written by J. Daniel Dolan and published by . This book was released on 1996 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computers and Information Technologies in Agricultural Production and Management written by Karl Schneider and published by DIANE Publishing. This book was released on 1997 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: This bibliography contains 544 journal, book, and audiovisual citations from the National Agricultural Library's AGRICOLA database. Each entry includes title, publisher, NAL call number, author, place and date of publication, pages, volume and issue number, description (audiovisual), and descriptors. Many entries include abstracts. Indexed by subject and author.
Download or read book Computers and Information Technologies in Agricultural Production and Management written by and published by . This book was released on 1997 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NED SIPS User s Manual written by Brian T. Simpson and published by . This book was released on 1995 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factors Influencing Recreational Use of Private Woodland written by Donald F. Dennis and published by . This book was released on 1990 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling the Regeneration of Northern Hardwoods with FOREGEN written by Dale S. Solomon and published by . This book was released on 2002 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Note NE written by and published by . This book was released on 19?? with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution of cut Guides for Thinning in Allegheny Hardwoods written by Christopher A. Nowak and published by . This book was released on 1997 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reexamination of Effects of Paraformaldehyde on Tissues Around Tapholes in Sugar Maple Trees written by David R. Houston and published by . This book was released on 1997 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book White Mountain National Forest N F Forest Plan Revision Proposed Land and Resource Management Plan written by and published by . This book was released on 2005 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:
