Sampling Vegetation Attributes - Natural Resources Conservation ...
Sampling Vegetation Attributes - Natural Resources Conservation ... Sampling Vegetation Attributes - Natural Resources Conservation ...
TABLE OF CONTENTS TABLE OF CONTENTS Page I. PREFACE ..................................................................................................................i II. INTRODUCTION ...................................................................................................1 A. Terms and Concepts ...........................................................................................1 B. Techniques Not Addressed ..................................................................................2 C. Guidelines...........................................................................................................3 D. Location of Study Sites .......................................................................................3 E. Key Species ........................................................................................................ 4 F. General Observations..........................................................................................5 G. Coordination .......................................................................................................6 H. Electronic Data Recorders ..................................................................................6 I. Reference Areas ..................................................................................................6 III. STUDY DESIGN AND ANALYSIS..........................................................................7 A. Planning the Study ..............................................................................................8 B. Statistical Considerations ..................................................................................12 C. Other Important Considerations .......................................................................22 IV. ATTRIBUTES .........................................................................................................23 A. Frequency .........................................................................................................23 B. Cover ..............................................................................................................25 C. Density .............................................................................................................26 D. Production ........................................................................................................27 E. Structure ...........................................................................................................28 F. Composition .....................................................................................................28 V. METHODS ........................................................................................................... 31 A. Photographs ......................................................................................................31 B. Frequency Methods...........................................................................................37 C. Dry Weight Rank Method .................................................................................50 D. Daubenmire Method ........................................................................................55 E. Line Intercept Method ......................................................................................64 F. Step-Point Method ............................................................................................70 G. Point-Intercept Method ....................................................................................78 H. Cover Board Method ........................................................................................86 I. Density Method ................................................................................................94 J. Double-Weight Sampling................................................................................102 K. Harvest Method ..............................................................................................112 L. Comparative Yield Method .............................................................................116 M. Visual Obstruction Method - Robel Pole ........................................................123 N. Other Methods ...............................................................................................130 VI. GLOSSARY OF TERMS ......................................................................................131 VII. REFERENCES ......................................................................................................139 APPENDIXES ...............................................................................................................149 Appendix A Study Location and Documentation Data Form........................................149 Appendix B Study and Photograph Identification .........................................................153 Appendix C Photo Identification Label .........................................................................157 Appendix D Selecting Random Samples (Using Random Number Tables) ....................161
TABLE OF CONTENTS TABLE OF CONTENTS (continued) Illustration Title Page Number 1 ........ Photo Plot - 3 X 3 Plot Frame Diagram .........................................................34 2 ........ Photo Plot - 5 X 5 Plot Frame Diagram .........................................................35 3 ........ Permanent Photo Plot Location......................................................................36 4 ........ Frequency Form ....................................................................................... 44-45 5 ........ Nested Frequency Form ........................................................................... 46-47 6 ........ Frequency Frame ............................................................................................48 7 ........ Nested Plot Frame..........................................................................................49 8 ........ Dry Weight Rank Form ............................................................................ 53-54 9 ........ Daubenmire Form.................................................................................... 59-60 10 ...... Daubenmire Summary Form ................................................................... 61-62 11 ...... Daubenmire Frame ........................................................................................63 12 ...... Line Intercept Form ................................................................................. 68-69 13 ...... Cover Data Form ..................................................................................... 75-76 14 ...... Sample Units (Hits) and Recording Procedures .............................................77 15 ...... Examples of Sighting Devices ........................................................................83 16 ...... Examples of Pin Frames .................................................................................84 17 ...... Example of a Point Frame ..............................................................................85 18 ...... Cover Board Method: Density Board Form ............................................. 89-90 19 ...... Cover Board Method: Profile Board Form ............................................... 91-92 20 ...... Examples of Cover Boards .............................................................................93 21 ...... Density Form ....................................................................................... 100-101 22 ...... Production Form .................................................................................. 109-110 23 ...... Weight Estimate Quadrat.............................................................................111 24 ...... Comparative Yield Form ...................................................................... 121-122 25 ...... Robel Pole Form................................................................................... 127-128 26 ...... Robel Pole ....................................................................................................129
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TABLE OF CONTENTS<br />
TABLE OF CONTENTS<br />
Page<br />
I. PREFACE ..................................................................................................................i<br />
II. INTRODUCTION ...................................................................................................1<br />
A. Terms and Concepts ...........................................................................................1<br />
B. Techniques Not Addressed ..................................................................................2<br />
C. Guidelines...........................................................................................................3<br />
D. Location of Study Sites .......................................................................................3<br />
E. Key Species ........................................................................................................ 4<br />
F. General Observations..........................................................................................5<br />
G. Coordination .......................................................................................................6<br />
H. Electronic Data Recorders ..................................................................................6<br />
I. Reference Areas ..................................................................................................6<br />
III. STUDY DESIGN AND ANALYSIS..........................................................................7<br />
A. Planning the Study ..............................................................................................8<br />
B. Statistical Considerations ..................................................................................12<br />
C. Other Important Considerations .......................................................................22<br />
IV. ATTRIBUTES .........................................................................................................23<br />
A. Frequency .........................................................................................................23<br />
B. Cover ..............................................................................................................25<br />
C. Density .............................................................................................................26<br />
D. Production ........................................................................................................27<br />
E. Structure ...........................................................................................................28<br />
F. Composition .....................................................................................................28<br />
V. METHODS ........................................................................................................... 31<br />
A. Photographs ......................................................................................................31<br />
B. Frequency Methods...........................................................................................37<br />
C. Dry Weight Rank Method .................................................................................50<br />
D. Daubenmire Method ........................................................................................55<br />
E. Line Intercept Method ......................................................................................64<br />
F. Step-Point Method ............................................................................................70<br />
G. Point-Intercept Method ....................................................................................78<br />
H. Cover Board Method ........................................................................................86<br />
I. Density Method ................................................................................................94<br />
J. Double-Weight <strong>Sampling</strong>................................................................................102<br />
K. Harvest Method ..............................................................................................112<br />
L. Comparative Yield Method .............................................................................116<br />
M. Visual Obstruction Method - Robel Pole ........................................................123<br />
N. Other Methods ...............................................................................................130<br />
VI. GLOSSARY OF TERMS ......................................................................................131<br />
VII. REFERENCES ......................................................................................................139<br />
APPENDIXES ...............................................................................................................149<br />
Appendix A Study Location and Documentation Data Form........................................149<br />
Appendix B Study and Photograph Identification .........................................................153<br />
Appendix C Photo Identification Label .........................................................................157<br />
Appendix D Selecting Random Samples (Using Random Number Tables) ....................161
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