Tree and Forest MeasurementTrees and forests are large and complex, but even something as difficult as the amount of wood they contain can be measured with quite unsophisticated equipment. Everyone, from professional foresters to the layperson, who works with forests and needs to measure them no matter where in the world, will appreciate this book. It summarises modern forest measurement techniques and describes why forests are measured, how to measure them, and the basis of the science behind these techniques. Professor Phil West has been a forest scientist for over 30 years. His research speciality is the mathematical modelling of forest growth behaviour. He is presently a forestry consultant and teaches forest measurement in the forestry school of Southern Cross University in northern New South Wales, Australia. |
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Содержание
11 Scope of this Book | 1 |
Scale of Measurement | 3 |
21 Measuring Things | 5 |
Accuracy Bias and Precision | 6 |
221 Accuracy | 7 |
222 Bias | 8 |
223 Precision | 9 |
Bias Precision and the Value of Measurements | 10 |
Basal Area | 71 |
Plot Measurement | 72 |
Practicalities of Point Sampling | 75 |
Stocking Density | 78 |
Quadratic Mean Diameter | 79 |
Measuring Dominant Height | 80 |
Site Productive Capacity | 81 |
89 Volume | 85 |
31 Basis of Stem Diameter Measurement | 13 |
Stem Crosssectional Shape | 14 |
Measuring Stem Diameter | 15 |
Tree Irregularities and Stem Diameter | 17 |
Bark Thickness | 18 |
41 Basis of Height Measurement | 19 |
Height by Direct Methods | 20 |
Height by Geometric Methods | 23 |
Height of Leaning Trees | 24 |
51 Reasons for Volume Measurement | 27 |
Volume by Xylometry | 28 |
Sectional Volume Formulae | 29 |
Tree Stem Shape | 30 |
Sectional Measurement of Felled Trees | 32 |
Sectional Measurement of Standing Trees | 33 |
Volume by Importance or Centroid Sampling | 34 |
61 Principles | 39 |
Stem Volume Functions | 40 |
Volume Estimated from Diameter Height and Taper | 44 |
Merchantable Stem Volume | 45 |
Taper Functions | 46 |
Examples of Taper Functions | 47 |
Using Taper Functions | 50 |
Developing Stem Volume and Taper Functions | 54 |
71 Reasons for Biomass Measurement | 57 |
Biomass by Direct Measurement | 58 |
Branches and Foliage | 59 |
722 Stems | 60 |
Carbon Content of Biomass | 61 |
Biomass Estimation Functions | 62 |
Allometric Functions | 63 |
Root Biomass Functions | 64 |
Leaf Biomass Functions | 65 |
Fineroot Biomass Functions | 67 |
81 Stands and Why they are Measured | 69 |
Measurements in Stands | 70 |
Point Sampling | 87 |
810 Biomass | 88 |
91 Forest Inventory and Sampling | 93 |
Subjective Versus Objective Sample Selection | 94 |
Population Statistics | 95 |
Variance and Confidence Limits | 96 |
101 Sampling Techniques and their Efficiency | 103 |
Sampling with Varying Probability of Selection | 104 |
Probability Proportional to Size | 105 |
Probability Proportional to Prediction | 109 |
Stratified Random Sampling | 112 |
Modelbased Sampling | 114 |
Choosing the Sampling Technique | 118 |
111 Objectives | 121 |
Stratification | 122 |
Forest Area | 123 |
Conduct of the Inventory | 124 |
Fixedarea Plot and Point Sampling | 126 |
117 Measuring Plots | 127 |
1171 Shape | 128 |
1173 Size | 129 |
1174 Edge Plots | 130 |
118 Conclusion | 131 |
121 Mapping | 133 |
Survey Example | 134 |
Calculating the Survey Results | 136 |
Plotting the Surveyed Area as Part of a Map | 141 |
Area of a Surveyed Region | 142 |
Global Positioning System | 144 |
References | 147 |
Appendix 1 Glossary | 153 |
Appendix 2 Conversion Factors | 159 |
Appendix 3 The Greek Alphabet | 161 |
Appendix 4 Basic Trigonometry | 163 |
| 165 | |
Часто встречающиеся слова и выражения
allow angle applied appropriate average basal area base bias biomass branches breast height calculated changes Chapter confidence counted covariate defined density described desired determine developed diameter at breast difficult discussed distance estimate example Figure forest area forestry give given global positioning system ground growing growth important included individual interval inventory involves known length less limit logs Management mathematical mean measured method models necessary observer obtain occur over-bark particular plant plantation plot point sampling population position precision predict probability productive random range regression result roots sampling units Sect selected shape shown shows simple slope species stand stem diameter stem volume stem wood volume Suppose survey Table taken taper functions techniques things tree stem types usually variable variation varies volume functions whole
Популярные отрывки
Стр. 148 - Gower ST, McMurtrie RE, Murty D, 1996. Aboveground net primary production decline with stand age: potential causes. Trends in Ecology and Evolution.
Стр. 148 - B. 1984. The relationship between the aboveground dry weight and diameter for a wide size range of erect land plants. Can. J. Bot.
Стр. 148 - GM (1995). Sampling methods to estimate foliage and other characteristics of individual trees. Ecology, 76, 1181-1 194.
Стр. 148 - Benson, ML (1991). Validity of surface area indices of Pinus radiata estimated from transmittance of sun's beam.
Стр. 148 - In: Amaro. A.. Tome, M. (Eds.), Empirical and Process-Based Models for Forest Tree and Stand Growth Simulation.
Стр. 148 - Makela, A., Landsberg, J., Ek, AR, Burk, TE, Ter-Mikaelian, M., Agren, GI, Oliver, CD and Puttonen, P. 2000. Process-based models for forest ecosystem management: current state of the art and challenges for practical implementation. Tree Physiology 20:289-298.
Стр. 148 - Huang S (1997) Development of compatible height and site index models for young and mature stands within an ecosystem-based management framework. In: Amaro A.
Стр. 148 - JK (1998) Mobilizing expert knowledge of tree growth with the PLANTGRO and INFER systems. Ecological Modelling 106233-246 Hayward WJ (1987) Volume and taper of Eucalyptus regnans grown in the central north island of New Zealand.
Библиографические данные
| Название | Tree and Forest Measurement |
| Автор | Philip W. West |
| Издание: | иллюстрированное |
| Издатель | Springer Science & Business Media, 2004 |
| ISBN | 3540403906, 9783540403906 |
| Количество страниц | Всего страниц: 167 |
| Экспорт цитаты | BiBTeX EndNote RefMan |