• TABLE OF CONTENTS
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 Title Page
 The authors
 Introduction
 Program operation






Title: Volumes and yields
CITATION PAGE IMAGE ZOOMABLE PAGE TEXT
Full Citation
STANDARD VIEW MARC VIEW
Permanent Link: http://ufdc.ufl.edu/UF00028028/00001
 Material Information
Title: Volumes and yields
Series Title: Florida Cooperative Extension Service Circular 629
Physical Description: Book
Language: English
Creator: Dippon, Duane
Flinchum, Mitch
Grissom, Jim
Miller, Earl
Affiliation: University of Florida -- Florida Cooperative Extension Service -- Institute of Food and Agricultural Sciences
Publisher: Florida Cooperative Extension Service , Institute of Food and Agricultural Sciences, University of Florida,
Publication Date: 1980?
 Subjects
Spatial Coverage: North America -- United States of America -- Florida
 Notes
Funding: Florida Historical Agriculture and Rural Life
 Record Information
Bibliographic ID: UF00028028
Volume ID: VID00001
Source Institution: Marston Science Library, George A. Smathers Libraries, University of Florida
Holding Location: Florida Agricultural Experiment Station, Florida Cooperative Extension Service, Florida Department of Agriculture and Consumer Services, and the Engineering and Industrial Experiment Station; Institute for Food and Agricultural Services (IFAS), University of Florida
Rights Management: All rights reserved by the source institution and holding location.

Table of Contents
    Title Page
        Page 1
    The authors
        Page 2
    Introduction
        Page 3
        Page 4
    Program operation
        Page 5
        Page 6
        Page 7
        Page 8
        Page 9
        Page 10
        Page 11
        Page 12
        Page 13
        Page 14
        Page 15
        Page 16
Full Text






Circular 2

FORESTRY INFORMATION S-YSTEM



3.. VOLUMES AND YIELDS



Duane Dippon, Mitch Flinchum, Jim Grissom., and Earl Miller



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The Authors

Duane Dippon is Assistant Professor, Mitch Flinchum is Associate Professor, Jim Grissom
is a graduate student, School of Forest Resources and Conservation, IFAS, University of
Florida, Gainesville, 32611; and Earl Miller is a graduate student at the University of
Illinois.












VOLUMES AND YIELDS

INTRODUCTION

The volumes and yields module is currently composed of four separate programs
that deal with expected or predicted volumes or yields of the pine species that are
grown commercially in Florida. Volume always applies to the amount of usable wood
expected from an individual tree. Yield always applies to the amount of usable wood
expected from an acre of land if certain conditions are known or estimated.

The volumes and yields module is not complete. Each time a researcher produces
a prediction equation which represents different site conditions or management systems
that pertain to forestry in Florida, additional options will be included.

The "Volume Tables" program displays cubic foot or board foot volume tables (and
the mathematical equations from which the tables were developed) that represent certain
diameters and height measurements. The "Volume Yield Tables" program displays tabular
data of yield produced for a specified species stand age and product type.

The "Multiple-Product Yield Tables" program generates tables for consecutive
years over a specified planning period. It is best suited for analysis of standing
timber quantities at various times in a stand's rotation period. The "Fusiform
Rust-Associated Volume Loss" program displays two tables which quantify percentage
volume losses in loblolly and slash pine timber due to stem colonization by the
fusiform rust fungus.

As with any reference material, use your judgement when interpreting this
information. Predictions are predictions. While the information in these tables are
based on sound and reliable measurements they do represent a range of values.

The operation and logic of this program are shown in Figure 1. The instructions
on how to use the program are included under the section "Program Operation." The
material that appears on the terminal screen is highlighted with double lines in this
manual.

Questions or comments regarding the program should be directed to:

Duane Dippon Mitch Flinchum
(904) 392-1850 (904) 392-5420

School of Forest Resources and Conservation
118 Newins-Zfegler Hall
University of Florida
Gainesville, FL 32611















3









INPUT CHOICE OF INFORMATION -- EXIT



VOLUME TABLES


YIELD TABLES

INPUT CHOOSE A SPECIES CLASS

INPUT CHOOSE A SPECIES CLASS
INPUT CHOOSE A PRODUCT CLASS


/ T INPUT T ENTER THE STANDAGE
PULPWOOD SAWTIMBER
INPUT A. CUBIC FOOT OUTSIDE BARK A. INT. BOARD FEET
B. CUBIC FOOT INSIDE BARK B. SCRIBNER BOARD FEET
INPUT CHOOSE A PRODUCT CLASS
'1

C CHOOSE A BASIS OF HEIGHT MEASUREMENTS:
INPUT A. TOTAL TREE HEIGHT PULPWOOD SAWTIMBER
B. MERCHANTABLE TREE HEIGHT INPUT A. CUBIC FOOT OUTSIDE BARK A. INT. BOARD FEET
"= !--- T --- B. CUBIC FOOTINSIDE BARK B. SCRIBNER BOARD FEET

IDENTIFY SCREEN FIELD WIDTH:
S INPUT A. 80 COLUMNS
O B. 40 COLUMNS
VOLUME TABLE
0O OUTPUT VOLUME EQUATION
r" _SPECIFICATIONS
=r
CUBIC FOOT VOLUME TABLE
ct OUTPUT CUBIC FOOT VOLUME EQUATION
-h SPECIFICATIONS
0

SMULTI-PRODUCT YIELD TABLES
0

C
0-




"< FUSIFORM RUST-ASSOCIATED VOLUME LOSS TABLES PRESENT STAND AGE
A PAFUTURE STAND AGE
AGE OF THIN
o) ___RESIDUAL STAND %
INPUT CHOOSE A SPECIES AGES OF DETAILED DESCRIPTION
"1 INPUT CHOOSE A SPECIES GROWTH FUNCTION COEFFICIENT
O
ao
"1




VOLUME LOSSES EXPECTED
OUTPUT BY DIAMETER CLASS







MULTIPLE-PRODUCT
OUTPUT STAND AND STOCK TABLE












PROGRAM OPERATION



Signing on to the Computer

The program is designed for the VAX computing system manufactured by the Digital
Equipment Corporation (DEC) but is not limited to DEC equipment. A computer terminal
with telephone hookup (modem) is required. If peripheral equipment such as hard copy
printer are used, then the signal transmission type between terminal and printer must
be compatible (serial or parallel).

Before using the terminal an account must be established with the Institute of
Food and Agricultural Sciences (IFAS) Extension Computer Network in Gainesville.

Use the following procedure to access the VAX computer:

1. Set the terminal to FULL DUPLEX.

2. Set the modem to FULL DUPLEX.

3. Dial (904) 392-5750 (for high-speed or 1200 baud terminals) or 392-5760
(for low-speed or 300 baud terminals) to access the IFAS VAX computer.

4. When the "READY" light appears on the modem, press the terminal's carriage
return (CR). The computer will respond "USERNAME" to which you will type
your user's name (usually 3 letters) and press (CR).

5. The computer will respond "PASSWORD" to which you will type your password
and press (CR).

6. When you see the message "WELCOME TO VAX/VMS..." you are signed on to the
IFAS VAX system successfully.

7. You should now see a "$" at the left margin of the bottom line on the
terminal screen or printer. To the right of the "$" is a blinking cursor
character. You now type "MENU" to access the IFAS Computer Network Menu
System.

8. The Forestry Information System (FORINSY) is listed as program #9 on the
main IFAS menu. After the instruction "PROGRAM NUMBER:" appears on your
terminal type in "9." The Volumes and Yields program is one portion of
FOR INSY.

9. The computer responds to your selection by listing 5 options as illustrated
below to assist you with the program. You should type in "102" after the
prompt "PROGRAM OPTION" to execute the Forestry Information System. You
will be ready to select the Volumes and Yields program after proceeding
through the preliminary menu.










5













The programs you can run are:

100) DONE Goes back to program name

101) HELP Prints this message

102) EXECUTE Run the program

103) ABSTRACT A short abstract will be typed

104) INSTRUCTIONS How to run the program

ENTER a CTRL/Y to go back to the main menu

Program option: 102


Preliminary Menu

The preliminary menu aids the School of Forest Resources and Conservation (SFRC)
in identifying the users of the programs. The preliminary menu is described by the
following:



Forestry Information System V1.L1
(FORINSY)

Have you used FORINSY before?

1. -- First-time FORINSY user.
2. -- Used FORINSY before.

Enter choice =



If you have used FORINSY before type "2" but if this is your first experience
then type "1" which will request the following information:


Forestry Information System (FORINSY)

Please introduce yourself by typing in the following information

LAST NAME:
FIRST NAME (OR INITIALS):
STREET (OR MAILING) ADDRESS:
CITY:
STATE:
ZIP CODE:








6












The user should supply the requested information on each line. By pressing
(CR), the computer moves to the next line until the "ZIP CODE" is supplied. The
computer then reprints your input along with the date and asks if everything is
correct.



TODAY'S DATE:

Is all information correct?

(1 = Yes 2 = No 3 = Exit):



The user chooses the appropriate response: "1" to continue processing, "2" to
retype the information correctly and "3" to exit the program. After successfully
supplying this information the user will be provided an explanation of why these facts
are collected after which the user will press (CR) to call up the main FORINSY menu.

The Main Menu Forestry Information System

The main menu offers a selection of different programs relating to forestry.
The following information will be displayed on the screen:



Forestry Information System V1.L1
(FORINSY)

Choose:

1. -- Exit.
2. -- Forestry Investment.
3. -- Volumes and Yields.
4. -- Products, Markets, and Prices.
5. -- Forestry Management Assistance.
6. -- Silvicultural Practices.
7. -- Wildlife Management.
8. -- Range Management.
9. -- Forest Pest Management
10. -- Forest Water Management.
11. -- Identification of Pines.
12. -- Wood for Energy.

Enter choice =



The user must select an option by typing in the menu number of the desired
program followed by a carriage return. To begin the Volumes and Yields program, enter
the number "3" and press carriage return (CR). The following menu is presented:










7














Choose:

1. -- Exit.
2. -- Volume Tables.
3. -- Yield Tables.
4. -- Multiple Product Yield Tables.
5. -- Fusiform Rust Associated Volume Loss.

Enter choice =



The following portion of the user's manual will present an example run for each
of the previously listed modules. No matter which of the above modules is selected
(except 1 -- exit) the following will appear on the screen:



Choose a program stem:

A. Exit
B. Explanation of the Program
C. Execution of the Program
D. Table References

Enter a letter:



If the user chooses "B" for an explanation (as is suggested), some introductory
remarks and definitions will be presented as well as up-to-date listing of the specific
models available in the program. After viewing the explanation, the user will return
to the same menu. A selection of "C" will begin the program execution for the program
selected from the top of the page.

EXAMPLE RUN: Volume Tables Generation

The user must provide species, stand type, product class, product specification,
and height measurement specifications. The species and stand type inputs would involve
selecting from a choice of four species of stands in varied states (See the program
operation for an example). The user must decide whether he wants to view a table for
pulpwood or sawtimber. In addition, the program needs to know what type of rule is
used, or whether the measurements will be dib or dob, dependant on the product type.
Finally the program will require the basis of the height measurement, either total or
merchantable height.

After selecting program execution under the Volume Tables module the user is
asked to select a pine species class:













8














GENERATION OF TREE VOLUME TABLES FOR SOUTHERN PINES

Choose a species class (or exit to leave the program):

A. Exit
B. Natural Longleaf
C. Natural Slash
D. Planted Slash
E. South Fla. Slash
F. Nat. Longleaf & Nat. Slash
G. Natural Loblolly
H. Planted Loblolly
I. Sand Pine (Choctawhatchee)

Type the corresponding letter:



Next a general timber product class is requested.



Choose a product class:

A. Pulpwood
B. Sawtimber

Enter A or B:



Depending on which product class is chosen, either of the following
specifications will be presented:



Choose: A or: Choose: B

A. Cu. ft. outside bark A. Int. V" bd. ft.
B. Cu. ft. inside bark B. Scribner bd. ft.

Enter A or B: Enter A or B:



The next menu will ask what type of field tree height measurements used to
develop the model are desired:



Choose a basis of height measurements:

A. Total Tree Heights
B. Merch. Tree Heights

Enter A or B:






9












Lastly, a choice will allow for 40-column-wide screens (generally only
Apple Il's have this; most others are 80-columns-wide.)



Identify screen field width (# of columns):

A. 80
B. 40

Enter A or B:



Having navigated these decisions, one or more tables with accompanying equations
and specifications will be displayed on the screen.



LOBLOLLY CU. FT. VOLUME to 4" dob
height (ft.)

20 30 40 50 60 70 80 90 100

dbh-------------------------------------- --------------------------------


5 0.55 1.08 1.61 2.13 2.66 3.19 3.72 4.24 4.77
6 1.02 1.77 2.53 3.29 4.05 4.81 5.57 6.33 7.09
7 1.56 2.60 3.63 4.67 5.70 6.73 7.77 8.80 9.83
8 2.20 3.55 4.90 6.25 7.60 8.95 10.30 11.65 13.00
9 2.91 4.62 6.33 8.04 9.75 11.46 13.17 14.88 16.59
10 3.72 5.83 7.94 10.05 12.16 14.27 16.38 18.49 20.60
11 4.60 7.16 9.71 12.26 14.81 17.37 19.92 22.47 25.03
12 5.57 8.61 11.65 14.69 17.73 20.76 23.80 26.84 29.88
13 6.63 10.19 13.76 17.33 20.89 24.46 28.02 31.59 35.15
14 7.77 11.90 16.04 20.17 24.31 28.45 32.58 36.72 40.85
15 8.99 13.74 18.49 23.23 27.98 32.73 37.48 42.22 46.97
16 10.30 15.70 21.10 26.50 31.91 37.31 42.71 48.11 53.51
17 11.69 17.79 23.89 29.99 36.08 42.18 48.28 54.38 60.47

CU. FT. VOLUME = 0.504 + 0.00211*(DBH**2)*HT

SPECIFICATIONS: Location: GEORGIA
Coeff. of determination: ?
Source: SAUCIER ET AL., 1981

Press RETURN to continue.



Pressing RETURN as requested will either bring on another table from a different
source, or return the user to the Volume Menu.

Full authoritative citations can be found under the "Table References" section
of the Volume Menu. A choice of "A" will exit this program and return the user to the
primary menu of this module. The user can either exit the module or choose a different
program from the menu.




10












EXAMPLE RUN: Yield Tables

The user must input the species, stand type, product class, and product
specifications. The species and stand type inputs would involve selecting from a
choice of four species of stands in varied states (See the program operation for an
example). In addition, the user must decide whether he wants to view a table for
pulpwood or sawtimber. Finally, the program needs to know what type of rule is used,
or whether the measurements are dib or dob, dependent on the product.

The user needs to note that the tables in this portion of the module for
loblolly are for Virginia, North Carolina and Maryland.

For some specifications, more than one table may be presented. These differ by
specific top tree measurement (yield to 4" dob, 2" dob, etc.).

GENERATION OF YIELD TABLES FOR SOUTHERN PINES

Note: Unless otherwise stated, 50-year site index bases were used for the
following classes.



Choose a species class (or exit to leave the program):

A. Exit
B. Unthinned Natural Slash
C. Thinned Natural Slash
D. Unthinned Planted Slash (25-yr. s.i.)
E. Thinned Natural Longleaf
F. Unthinned Natural Loblolly
G. Unthinned Planted Loblolly (25-yr, s.i.)

Type the corresponding letter:

Enter a stand age i years (ex: 35):



Next, a general timber production class is requested.



Choose a production class:

A. Pulpwood
B. Sawtimber

Enter A or B:



Depending on which product class is chosen, either of the following
specifications will be presented:









11












Choose: A or: Choose: B

A. Cu. ft. outside bark (o.b.) A. Int. 1/4" bd. ft.
B. Cu. ft. inside bark (i.b.) B. Scribner bd. ft.

Enter A or B: Enter A or B:



After entering these choices, one or more tables with accompanying equations and
specifications will be displayed on the screen.


THINNED SLASH YIELD to 4" dob
At age 25
basal area (sq. ft.)

50 75 100 125 150
S.I.------------------------------------
Cubic feet per acre
50 530 762. 986. 1204. 1418.
55 661. 950. 1230. 1503. 1770.
60 794. 1143. 1473. 1807. 2128.
65 929. 1336. 1729. 2112. 2487.
70 1062. 1527. 1977. 2414. 2843.
75 1192. 1715. 2219. 2711. 3193.
80 1319. 1898. 2456. 3001. 3534.
85 1443. 2075. 2686. 3282. 3864.
90 1562. 2247. 2909. 3553. 4184.
95 1677. 2413. 3123. 3815. 4493.
100 1788. 2573. 3330. 4068. 4790.



CU. FT. YIELD = e ** (5.98812-19.758/AG + 0.8968*1n(BA) 121.713/SI 0.00*SI)

SPECIFICATIONS: Location: North Florida
Coeff. of determination: 94.4
Source: Bennett, 1970

Please press RETURN.



Pressing RETURN as requested above will either bring on another table from a
different source, or return the user to the Cubic Ft. Menu.

Full authoritative citations can be found under the "Table References" section
of the Cubic Ft. Menu. A choice of "A" will exit this program and return the user to
the primary menu of this module. The user can either exit the module or choose a
different program from the menu.










12












EXAMPLE RUN: Multiple Product Yield Tables

The "Multiple-Product Yield Tables" program (4) generates tables for consecutive
years over a specified planning period. It is best suited for analysis of standing
timber quantities at various times in a stand's rotation period. The program utilizes
a yield model developed by F.A. Bennett and J. L. Clutter as published in U.S. Forest
Service Research Paper SE-35, "Multiple product yield estimates for unthinned slash
pine plantations -- pulpwood, sawtimber, and gum." The original program was developed
by L. Grosenbaugh who called it "Rainbow."


The user must input the following:

1. Number of trees per acre
2. Age at beginning of planning period
3. Age at end of planning period
4. Age at which thin occurs
5. Percent of stand left after thin
6. What age for initial detailed stand table
7. How often does the user desire a stand table
8. Growth function or 1 if unknown


Having typed in "4," the program will immediately begin asking for information
about the forest stand.



GENERATION OF STAND AND STOCK TABLES FOR SOUTHERN PINE PLANTATIONS

With Adjustments for Thinnings

Adapted from: L. R. Grosenbaugh
University of Florida

Enter the planted number of trees per acre:
(Or type zero (0) to leave the program)

Enter the site index (25-yr. basis):

Enter the age of the stand at the beginning of the planning period:
(lowest entry allowed is 2 yrs.)

Enter the age of the stand at the end of the planning period:

Enter the age at which you want the thin to occur:

Enter the percent (as a decimal) of the stand to be left after the thin:
(Ex.: 0.75 to leave 75% or current T/A)

Enter the first age at which you want a detailed stand table to be presented:

Enter a desired detailed table interval (every ? years):

Enter a growth function coefficient for the stand:
(If unknown, enter a 1)

13












After entering values for each of the parameters as shown above and pressing the
RETURN key, the yield table will immediately be displayed. Since it may be longer than
the screen length, the user should use the HOLD SCREEN key (if using a DEC Professional
terminal) or other scroll-stopping keys on your keyboard. A message will appear on the
screen as a reminder of this.

The writers also suggest that the user get a printout of the whole table to
refer to later. The example table given below corresponds to the values entered in
this sample.



*Reminder: Use the HOLD SCREEN key (or NO SCROLL) to halt display scroll.



SITE PLANTED THIN % STAND
INDEX T/A AGE REMAINING

65. 500. 16. 0.75

STAND AND STOCK TABLE




MULTIPLE PRODUCTS


TREES/ TOTAL SAW- TOPWOOD PULP PULP TOTAL
AGE ACRE DBH HT. VOL. TIMBER VOLUME 5-9" DBH 10" DBH VOL.



YRS IN. FT. CORDS BD. FT. ----------- CORDS-------------

10. 392. 5.2 26. 4.30 0.0 0.0 4.3 0.0 4.3
11. 383. 5.6 30. 6.88 0.0 0.0 6.9 0.0 6.9
12. 376. 5.9 33. 9.57 0.0 0.0 9.6 0.0 9.6
13. 369. 6.3 36. 12.27 0.0 0.0 12.3 0.0 12.3
14. 364. 6.5 39. 14.92 0.0 0.0 14.9 0.0 14.9
15. 359. 6.8 42. 17.49 31.4 0.1 17.3 0.0 17.4



After displaying the table, the program will return to the beginning of the
Multiple Product Yield Tables program. The user may choose to run the program again
with alternative data or exit by typing "0." This action returns the user to the
primary menu of this module. The user can either exit the module or choose a different
program from the menu.

IV. Fusiform Rust Associated Volume Loss Tables

The user needs only to select the species he wishes to acquire information
about.








14












PROGRAM OPERATION

Having chosen "Fusiform Rust-Associated Volume Loss" from the "Volumes and
Yields" menu, the user will see the following:

FUSIFORM RUST-ASSOCIATED VOLUME LOSS TABLES



Percentage volume losses in Loblolly and Slash Pine sawtimber due to stem
colonization by the fusiform rust fungus.

1. Loblolly
2. Slash Pine
3. Return to Volume and Yields Menu

Choose species: 1



If the user chose "1," the following table would be presented.



TABLE 1: Board-foot and cubic foot volume losses for loblolly


Percentage Percentage
Diameter Volume Loss Volume Loss
Class (in.) (board ft.) (cubic ft.)




P. taeda 9.5-10.4 (10) 43.1 22.1
(loblolly) 10.5-11.4 (11) 42.7 18.1
11.5-12.4 (12) 35.2 18.9
12.5-13.4 (13) 30.3 18.2
13.5-14.4 (14) 30.9 17.0
14.5-15.4 (15) 25.2 18.5
15.5-16.4 (16) 24.4 15.8
16.6-17.4 (17) 20.8 15.6
17.5+ (18) 24.1 16.0



After examining the table and pressing RETURN, the user will return to the
species menu, where he may choose to view the other species table or return to the
primary menu of this menu. The user may choose to rerun the program or exit the module
and return to the main menu of FORINSY.

A "NO" response or a "0" response at any point in the program will return the
user to the main FORINSY menu. At this point, any other program in FORINSY can be
accessed or an exit can be accomplished by entering "1" and pressing the carriage
return.







15













Forestry Information System V1.L1
(FORINSY)

Choose:

1. -- Exit.
2. -- Forestry Investment.
3. -- Volumes and Yields.
4. -- Products, Markets, and Prices.
5. -- Forestry Management Assistance.
6. -- Silvicultural Practices.
7. -- Wildlife Management.
8. -- Range Management.
9. -- Forest Pest Management
10. -- Forest Water Management.
11. -- Identification of Pines.
12. -- Wood for Energy.

Enter choice =



If an exit is chosen by entering a "1," an exit from the FORINSY subsystem
begins. The exit is completed when the IFAS VAX computer system asks for a program
number. This number refers to the original VAX main menu seen earlier, which provided
the access to FORINSY and several other options. If no other option is desired,
entering "0" will cause the user to leave the main menu and go directly into the
operating system. This is signified by a "$" on the left side of the screen or page.



Program number:



$



The user can either go to other programs within the IFAS VAX operating system or
enter "Lo" to log off the host computer. At this point the signal is lost and the
equipment can be turned off.














COOPERATIVE EXTENSION SERVICE, UNIVERSITY OF FLORIDA, INSTITUTE OF FOOD AND AGRICULTURAL
SCIENCES, K. R. Tefertiller, director, in cooperation with the United States Department of Agriculture, publishes this infor-
mation to further the purpose of the May 8 and June 30, 1914 Acts of Congress; and is authorized to provide research, educa-
tional information and other services only to individuals and institutions that function without regard to race, color, sex or
national origin. Single copies of Extension publications (excluding 4-H and Youth publications) are available free to Florida
residents from County Extension Offices. Information on bulk rates or copies for out-of-state purchasers is available from
C. M. Hinton, Publications Distribution Center, IFAS Building 664, University of Florida, Gainesville, Florida 32611. Before publicizing this
publication, editors should contact this address to determine availability.




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