Source: STEPHEN F. AUSTIN STATE UNIVERSITY submitted to
GROWTH AND YIELD OF MANAGED AND UNMANAGED LOBLOLLY AND SLASH PINE PLANTATIONS IN EAST TEXAS
Sponsoring Institution
National Institute of Food and Agriculture
Project Status
EXTENDED
Funding Source
Reporting Frequency
Annual
Accession No.
0209224
Grant No.
(N/A)
Project No.
TEXY129
Proposal No.
(N/A)
Multistate No.
(N/A)
Program Code
(N/A)
Project Start Date
Feb 1, 2007
Project End Date
Jan 31, 2013
Grant Year
(N/A)
Project Director
Coble, D. W.
Recipient Organization
STEPHEN F. AUSTIN STATE UNIVERSITY
BOX 6109
NACOGDOCHES,TX 75962
Performing Department
College of Forestry & Agriculture
Non Technical Summary
Growth and yield for loblolly and slash pine plantations in east Texas and western Louisiana is poorly understood, especially for intensively managed plantations. This project will provide reliable growth and yield estimates for east Texas and western Louisiana loblolly and slash pine plantations that are unmanaged or intensively managed.
Animal Health Component
100%
Research Effort Categories
Basic
(N/A)
Applied
100%
Developmental
(N/A)
Classification

Knowledge Area (KA)Subject of Investigation (SOI)Field of Science (FOS)Percent
12306112090100%
Goals / Objectives
1. Continue collecting and analyzing data as well as updating existing growth and yield models for unmanaged loblolly and slash pine plantations in east Texas. 2. Continue collecting data to develop growth and yield models for intensively managed loblolly pine plantations in east Texas.
Project Methods
Data will be collected on existing and new permanent growth and yield plots located throughout east Texas and western Louisiana in an array of different growing conditions. These data will be used to develop reliable growth and yield models for managed and unmanaged loblolly and slash pine plantations. Models that describe the yield estimates resulting from different types of management activities (e.g., thinning, fertilization, herbicides) will be emphasized.

Progress 01/01/12 to 12/31/12

Outputs
OUTPUTS: Twenty-three Phase 1 plots in the East Texas loblolly and slash pine plantations were visited and/or remeasured during the 2012 reporting period. Five of these plots were destroyed by logging operations (2) and wildfire (3). Twenty-seven Phase 2 plots were visited and/or remeasured in East Texas loblolly pine plantations. One of these plots was burned in a wildfire. Three new Phase 2 plots were installed in loblolly pine plantations. At the end of the 2012 reporting period, there were 49 active Phase 1 plots (40 loblolly and 9 slash) and 126 active Phase 2 plots located throughout East Texas and western Louisiana. Two undergraduate forestry students were hired to help remeasure heights and diameters of trees on the Phase 1 and 2 plots remeasured during the 2012 reporting period. One paper was published in the Southern Journal of Applied Forestry (SJAF) during the 2012 reporting period. One presentation was made at the 2012 Southern Mensurationists Meeting in Jacksonville, Florida about a mixed-effects model for stand table projection. The growth and yield models developed from this project and published in SJAF continue to be used by foresters in the Western Gulf Coastal Plain region as well as for educational purposes in forestry classes taught at SFASU. PARTICIPANTS: Two SFASU undergraduate forestry students were hired during the summer of 2012 (June through August) to perform plot and tree measurements. TARGET AUDIENCES: Outputs from this project are intended for use by forest managers (consultants, private industry foresters) and students at SFASU. PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.

Impacts
This project provides managers of East Texas pine plantations and forestry students at SFASU with growth and yield information that is useful in the management of East Texas forests and forestry education, respectively. Scientists in other studies at SFASU, The Campbell Group, Rayonier, and numerous forestry consultants are currently using the data and/or results from this project in their forest management activities. Continued establishment of new Phase 2 plots in intensively-managed loblolly pine plantations throughout East Texas will provide additional data for new growth and yield products for the region.

Publications

  • Coble, D.W., Q.V. Cao, and L. Jordan. 2012. An annual tree survival and diameter growth model for loblolly and slash pine plantations in east Texas. Southern Journal of Applied Forestry 36(2):79-84.


Progress 01/01/11 to 12/31/11

Outputs
OUTPUTS: Twenty-eight Phase 1 plots in East Texas loblolly and slash pine plantations were visited and/or remeasured during the 2011 reporting period. Thirteen of these plots were destroyed mostly by logging operations. Fifty-one Phase 2 plots were visited and/or remeasured in East Texas loblolly pine plantations during the 2011 reporting period. One plot was destroyed by the installation of a natural gas pipeline and another was destroyed by a wildfire. At the end of the 2011 reporting period, there were 56 active Phase 1 plots and 123 Phase 2 plots located throughout East Texas and western Louisiana. Three forestry students were hired to help remeasure heights and diameters of trees on the Phase 1 and 2 plots visited during the 2011 reporting period. Two papers were published in the Southern Journal of Applied Forestry (SJAF) during the 2011 reporting period and another paper will be published in SJAF in 2012. Three presentations were made at the 2011 Southern Mensurationists Meeting in Memphis, Tennessee about definitions of dominant height in yield predictions, parameter estimation techniques in diameter distribution models, and modeling the incidence of tipmoth infection in Western Gulf loblolly pine plantations. The growth and yield models developed from this project and published in SJAF continue to be used by foresters in the Western Gulf Coastal Plain region as well as for educational purposes in forestry classes taught at SFASU. In May 2011, a graduate student partially supported by this project during the 2011 reporting period successfully defended and graduated with his MS in Forestry from SFASU. PARTICIPANTS: Three SFASU forestry students were hired during the summer of 2011 (May through August) to perform plot and tree measurements. One MS student graduated in May 2011. TARGET AUDIENCES: Outputs from this project are intended for use by forest managers (consultants, private industry foresters) as well as students at SFASU. PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.

Impacts
This project provides managers of East Texas pine plantations and forestry students at SFASU with growth and yield information that is useful in the management of East Texas forests and forestry education. Scientists in other studies at SFASU, The Campbell Group, Rayonier, and numerous forestry consultants are currently using the data and/or results from this project in their forest management activities. Continued establishment of new Phase 2 plots in intensively-managed loblolly pine plantations throughout East Texas will provide additional data for new growth and yield analyses for the region.

Publications

  • Allen II, M.G., D.W. Coble, Q.V. Cao, J. Yeiser, I. Hung. 2011. A modified stand table projection growth model for unmanaged loblolly and slash pine plantations in east Texas. South. J. Appl. For. 35(3):115-122.
  • Coble, D.W., and Y.J. Lee. 2011. A mixed-effects height-diameter model for individual loblolly and slash pine trees in east Texas. South. J. Appl. For. 35(1):12-17.


Progress 01/01/10 to 12/31/10

Outputs
OUTPUTS: Nineteen Phase 1 plots in the East Texas loblolly and slash pine plantations were visited and/or remeasured during the 2010 reporting period. Seven of these plots were destroyed mostly by logging operations. Forty-seven Phase 2 plots were visited and/or remeasured in East Texas loblolly pine plantations. One of these plots was logged. At the end of the 2010 reporting period, there were 66 active Phase 1 plots and 126 active Phase 2 plots located throughout East Texas and western Louisiana. Three forestry students were hired to help remeasure heights and diameters of trees on the Phase 1 and 2 plots remeasured during the 2010 reporting period. A manuscript about new height-diameter equations for loblolly and slash pine trees in East Texas (reported in the 2009 annual report) will be published in the February 2011 issue of the Southern Journal of Applied Forestry (SJAF). Another manuscript about a new modified stand table projection growth and yield model for loblolly and slash pine plantations in East Texas will be published in SJAF later in 2011. A third manuscript about annual growth models for individual loblolly and slash pine trees in East Texas has been accepted for publication in SJAF and is under revision. In addition, two other non-peer reviewed papers were published during the 2010 reporting period that used data from this project. A presentation was made at the 2010 Southern Mensurationists Meeting in Knoxville, Tennessee about sample size estimation for mixed-effects height-diameter models for loblolly pine trees in East Texas. The whole-stand and diameter distributions models developed from this project continue to be used by the Texas Forest Service in their standalone computer application for use by forest managers in East Texas. The models developed in this study continue to be used in undergraduate forestry classes taught at SFASU. In May of the 2010 reporting period, a graduate student funded in the past by this project successfully defended and graduated with his MS in Forestry from SFASU. PARTICIPANTS: Three SFASU forestry students were hired during the summer of 2010 (May through August) to perform plot and tree measurements. One MS student graduated in May 2010 TARGET AUDIENCES: Outputs from this project are intended for use by forest managers (consultants, private industry foresters) as well as students at SFASU. PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.

Impacts
This project provides managers of East Texas pine plantations and forestry students at SFASU with growth and yield information that is useful in the management of East Texas forests and forestry education, respectively. Scientists in other studies at SFASU, The Campbell Group, Rayonier, and The Hancock Group are currently using the data and/or results from this project. Continued establishment of new Phase 2 plots in intensively-managed loblolly pine plantations throughout East Texas will provide additional data for new growth and yield analyses for the region.

Publications

  • Coble, D.W., and Y.J. Lee. 2010. Self-referencing site index equations for unmanaged loblolly and slash pine plantations in east Texas. Stanturf, John A., ed. 2010. Proceedings of the 14th biennial southern silvicultural research conference. Gen. Tech. Rep. SRS-121. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 614 p.
  • Allen II, M.G., D.W. Coble, J. Yeiser, I. Hung. 2010. A whole-stand growth and yield model for unmanaged loblolly and slash pine plantations in east Texas. East Texas Pine Plantation Research Project, Report No. 67, Stephen F. Austin State University, Nacogdoches, Texas. 12 p.


Progress 01/01/09 to 12/31/09

Outputs
OUTPUTS: Forty-eight Phase 1 plots in the East Texas loblolly and slash pine plantations were visited and/or remeasured during the 2009 reporting period. Twenty-seven of these plots were destroyed mostly by logging operations. Twenty-nine Phase 2 plots were remeasured in East Texas loblolly pine plantations. This is the first remeasurement of these 29 plots, which were installed during the 2006 reporting period. At the end of the 2009 reporting period, there were 65 active Phase 1 plots and 127 active Phase 2 plots located throughout East Texas and western Louisiana. Two graduate forestry students were hired to help remeasure heights and diameters of trees on the Phase 1 and 2 plots remeasured during the 2009 reporting period. A new whole-stand growth and yield model for loblolly and slash pine plantations was published in the Southern Journal of Applied Forestry (SJAF). Another manuscript submitted to SJAF (reported in the 2008 annual report) about new height-diameter equations for loblolly and slash pine trees in East Texas has been accepted and is under revision. A graduate student presentation was made at the 2009 Southern Mensurationists Meeting in San Antonio, Texas about a new modified stand table projection growth and yield model for loblolly and slash pine plantations in East Texas. Also, the whole-stand and diameter distributions models developed from this project have been incorporated into a stand-alone computer application developed in cooperation with the Texas Forest Service for use by forest managers in East Texas. The models developed in this study continue to be used in undergraduate forestry classes taught at SFASU. In May of the 2009 reporting period, a graduate student funded in the past by this project successfully defended and graduated with his PhD in Forestry from SFASU. PARTICIPANTS: Two SFASU graduate forestry students were hired during the summer of 2009 (May through August) to perform plot and tree measurements. TARGET AUDIENCES: Outputs from this project are intended for use by forest managers (consultants, private industry foresters) as well as students at SFASU. PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.

Impacts
This project provides managers of East Texas pine plantations and forestry students at SFASU with growth and yield information that is useful in the management of East Texas forests and forestry education, respectively. Scientists in other studies at SFASU, The Campbell Group, and The Handcock Group are currently using the data and/or results from this project. Continued establishment of new Phase 2 plots in intensively-managed loblolly pine plantations throughout East Texas will provide additional data for new growth and yield analyses for the region.

Publications

  • Coble, D.W. 2009. A new whole-stand model for unmanaged loblolly and slash pine plantations in East Texas. South. J. Appl. For. 33(2):69-76.


Progress 01/01/08 to 12/31/08

Outputs
OUTPUTS: Sixty-seven Phase 1 plots in East Texas loblolly and slash pine plantations were visited and/or remeasured during the 2008 reporting period. Approximately one-third of these plots were destroyed by logging operations or Hurricane Ike. Fifty Phase 2 plots were remeasured in East Texas loblolly pine plantations. This is the first remeasurement of these 50 plots, which were installed during the 2005 reporting period. At the end of the 2008 reporting period, there are 92 active Phase 1 plots and 127 active Phase 2 plots located throughout East Texas and western Louisiana. Two undergraduate forestry students were hired to help remeasure heights and diameters of trees on the Phase 1 and 2 plots remeasured during the 2008 reporting period. A new diameter distribution growth model for slash pine was published in the Southern Journal of Applied Forestry (SJAF). A presentation about new height-diameter prediction equations for loblolly and slash pine trees was made in October 2008 at a IUFRO meeting in South Korea, and a paper was published in the conference proceedings. A more expansive paper on this research has been submitted to SJAF. Another presentation about an annual growth model for individual loblolly and slash pine trees in East Texas was also made in October 2008 at the Southern Mensurationists Meeting at Florida, and a manuscript is being prepared for SJAF. A third presentation about a thinning model for loblolly and slash pine plantations was made in November 2008 at the 15th Biennial Southern Silviculture Conference in Hot Springs, Arkansas, and a paper will be published in the conference proceedings. This new thinning model has been imbedded in a whole-stand growth and yield model for East Texas loblolly and slash pine plantations (described in last year's report and IN PRESS at SJAF) that was incorporated into a computer program that runs in Excel. This "addin" for Excel is used primarily in undergraduate forestry education at SFASU to teach students about the principles and application of growth and yield models for pine plantations. PARTICIPANTS: Two SFASU undergraduate forestry students were hired during the summer of 2008 (May through August) to perform plot and tree measurements. TARGET AUDIENCES: Outputs from this project are intended for use by forest managers (consultants, private industry foresters) as well as students at SFASU. PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.

Impacts
This project provides managers of East Texas pine plantations and undergraduate forestry students at SFASU with growth and yield information that is useful in the management of East Texas forests and undergraduate education, respectively. Examples during the 2008 reporting period include growth and yield models and improved height prediction equations. Scientists in other studies at SFASU, ForestTech, Hancock Group, and The Campbell Group are currently using the data and/or results from this project. Continued establishment of new Phase 2 plots in intensively-managed loblolly pine plantations throughout East Texas will provide additional data for growth and yield analyses for this region.

Publications

  • Coble, D.W., and Y.J. Lee. 2008. A new diameter distribution model for unmanaged slash pine plantations in east Texas. South. J. Appl. For. 32(2):89-94.
  • Coble, D.W., and Y.J. Lee. 2008. A Mixed-Effects Height-Diameter Model for Loblolly Pine Plantations in East Texas, USA. Proceedings of the IUFRO Working Parties 4.01, 4.02, 4.04 International Conference, Advances in Forest Management and Inventory, at Kangwon National University, South Korea, October 13-18, 2008.


Progress 01/01/07 to 12/31/07

Outputs
OUTPUTS: Twenty-eight Phase 1 plots in East Texas loblolly and slash pine plantations were remeasured during the 2007 reporting period. Nineteen Phase 2 plots were remeasured in East Texas loblolly pine plantations during this same period. Twenty-eight new Phase 2 plots were installed in East Texas loblolly pine plantations during this same period. Note: Phase 1 plots were installed during the early/mid 1980's. They now represent mature loblolly and slash pine plantations and have been remeasured for 27 years. Phase 2 plots were installed in young, intensively-managed loblolly pine plantations beginning in 2004. The 2007 reporting period represents the first remeasurement of Phase 2 plots (those installed in 2004). As of Fall 2007, there are 115 Phase 1 plots and 127 Phase 2 plots located throughout East Texas and western Louisiana. A 3-person remeasurement crew was funded with monies from this project to perform the plot and tree measurements. A new diameter distribution growth model for slash pine was completed during the reporting period and is IN PRESS at the Southern Journal of Applied Forestry (SJAF). A presentation about new site index equations for East Texas loblolly and slash pine plantations was made in February 2007 at the 14th Biennial Southern Silviculture Conference in Athens, Georgia, which should be published in the conference proceedings. Another presentation about a new whole-stand growth model for loblolly and slash pine plantations was made in November 2007 at the Southern Mensurationists Meeting in Alabama, which has been submitted as a manuscript to SJAF. PARTICIPANTS: Three SFASU undergraduate students were hired during the summer of 2007 (May through August) to perform plot and tree measurements. TARGET AUDIENCES: Outputs from this project are intended for use by forest managers (consultants, private industry foresters) as well as students at SFA. PROJECT MODIFICATIONS: None

Impacts
This project provides managers of East Texas pine plantations with growth and yield information that is useful in the management of their forests. Examples during the 2007 reporting period include growth and yield models and improved site index equations. Scientists in other studies at Stephen F. Austin State University, ForestTech, TimberStar, and The Campbell Group are currently using the data and/or results from this project. Continued establishment of new plots in intensively-managed loblolly pine plantations throughout East Texas will provide additional data for growth and yield analyses for this region.

Publications

  • None during the 2007 reporting period