| Designing and Conducting a Forest Inventory - case: 9th National Forest Inventory of Finland | 3 |
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| Preface | 5 |
| Acknowledgements | 7 |
| Contents | 9 |
| Chapter 1: Introduction | 13 |
| 1.1 Climatic Conditions and Forests of Finland | 14 |
| 1.2 Early Attempts to Assess Forest Resources | 14 |
| 1.3 The Development of the National Forest Inventories in Finland | 17 |
| 1.4 The Use of the Forest Inventory Results in Forest Policy | 20 |
| 1.5 The Use of National Forest Inventory Data in the UNFCCC and the Kyoto Protocol Reporting | 22 |
| 1.6 The Role of National Forest Inventory in Assessing the Status of Biodiversity | 23 |
| 1.7 The Content and Structure of the Book, Further Results of NFI9 | 24 |
| References | 25 |
| Chapter 2: Design and Measurements | 29 |
| 2.1 Field Sampling Design | 29 |
| 2.1.1 Sampling Simulation | 32 |
| 2.1.2 South Finland | 32 |
| 2.1.3 North Finland (Excluding North Lapland) | 35 |
| 2.1.4 North Lapland | 35 |
| 2.2 Assessment Units | 37 |
| 2.2.1 Angle Count Plots | 37 |
| 2.2.2 Stands | 38 |
| 2.2.3 Other Assessment Units | 38 |
| 2.3 Locating the Field Plots | 39 |
| 2.4 Administrative Information | 40 |
| 2.5 Land-Use and Classification of Forestry Land | 42 |
| 2.6 Site Variables | 43 |
| 2.7 Soil Variables | 45 |
| 2.8 Drainage Situation | 47 |
| 2.9 Taxation Class | 47 |
| 2.10 Retention Trees to Maintain Biodiversity of Forests | 48 |
| 2.11 Description of the Growing Stock of the Stand | 49 |
| 2.12 Damages | 54 |
| 2.13 Silvicultural Quality of Stand | 56 |
| 2.14 Accomplished and Proposed Measures | 57 |
| 2.15 Key Habitat Characteristics | 58 |
| 2.16 Tally Tree Measurements | 61 |
| 2.17 Epiphytic Lichens | 67 |
| 2.18 Keystone Tree Species | 67 |
| 2.19 All Tree Species | 68 |
| 2.20 Dead Wood Measurements | 68 |
| 2.21 Equipment for Measurements | 70 |
| 2.22 A Correction to the Height Measurements of Year 2001 | 72 |
| 2.22.1 The Height Correction Models for the Sample Trees not Re-measured | 73 |
| 2.22.2 Models for Correcting the Height Increments | 74 |
| 2.23 Training and Quality Assurance | 75 |
| 2.24 The Workload and Costs | 76 |
| References | 77 |
| Chapter 3: Estimation Methods | 80 |
| 3.1 Estimation of Areas | 81 |
| 3.2 Estimation of the Current Growing Stock | 82 |
| 3.2.1 Mean Values per Area Unit | 83 |
| 3.2.2 Mean Diameters | 85 |
| 3.2.3 Predicting Sample Tree Form Factors, Volumes and Timber Assortment Proportions | 86 |
| 3.2.3.1 Timber Assortments | 88 |
| 3.2.4 Predicting Form Heights for Tally Trees | 89 |
| 3.3 Estimation of Volume Increment | 91 |
| 3.3.1 Increment of a Sample Tree | 92 |
| 3.3.2 Increment of Survivor Trees | 93 |
| 3.3.3 Increment of Drain | 94 |
| 3.3.4 Total Increment | 95 |
| 3.4 Estimation of the Volume of Dead Wood | 96 |
| 3.5 Assessment of Sampling Error | 96 |
| 3.5.1 Sampling Error of Ratio Estimators | 97 |
| 3.5.2 Sampling Error of Total Volumes and Aggregates | 99 |
| 3.6 Thematic Maps | 100 |
| References | 101 |
| Chapter 4: Results | 103 |
| 4.1 The Areas of Land-Use Classes and Their Development | 103 |
| 4.1.1 Forestry Land | 103 |
| 4.1.2 Forest Land | 106 |
| 4.1.3 Land Classes Based on FAO Definitions | 107 |
| 4.1.4 Land Use-Changes Based on the Observations on the Plot | 108 |
| 4.1.5 Ownership Information | 109 |
| 4.2 Restrictions on Forestry and Area Available for Wood Production | 110 |
| 4.3 Soil Classification and the Areas of Site Fertility Classes on Mineral Soils | 111 |
| 4.4 Peatlands and Their Site Classes | 114 |
| 4.4.1 Peatland Area and Its Changes | 114 |
| 4.4.2 Land Classes of Peatlands | 116 |
| 4.4.3 Drainage Situation of Peatlands | 117 |
| 4.4.4 Principal Site Classes and Site Fertility Classes on Peatland S
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