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2015 Forest Resources Assessment

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2015 Forest Resources Assessment 2015 Forest Resources Assessment Methodology and results in the project sites of Aklan, Antique, Capiz and Iloilo adjacent to the Panay Mountain Range Imprint As a federally owned enterprise, GIZ supports the German Government in achieving its objectives in the field of international cooperation for sustainable development. Published by: Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH Registered offices Bonn and Eschborn 4th Floor Forest Management Bureau Annex Building Department of Environment and Natural Resources Compound Visayas Avenue, Diliman, Quezon City 1101, Philippines T +63 2 697 3127 Programme: Forest and Climate Protection in Panay – Phase II Authors: Ralph Lennertz and Jürgen Schade, DFS Deutsche Forstservice GmbH Photo credits/sources: Ralph Lennertz URL links: This publication contains links to external websites. Responsibility for the content of the listed external sites always lies with their respective publishers. When the links to these sites were first posted, GIZ checked the third- party content to establish whether it could give rise to civil or criminal liability. However, the constant review of the links to external sites cannot reasonably be expected without concrete indication of a violation of rights. If GIZ itself becomes aware or is notified by a third party that an external site it has provided a link to gives rise to civil or criminal liability, it will remove the link to this site immediately. GIZ expressly dissociates itself from such content. Maps: The maps printed here are intended only for information purposes and in no way constitute recognition under international law of boundaries and territories. GIZ accepts no responsibility for these maps being entirely up to date, correct or complete. All liability for any damage, direct or indirect, resulting from their use is excluded. On behalf of the German Federal Ministry for the Environment, Nature Conservation, Building and Nuclear Safety (BMUB) GIZ is responsible for the content of this publication. Printing and distribution: GIZ, Quezon City Quezon City, Philippines | 2017 Table of contents List of tables ............................................................................................................................................ 1 List of figures ........................................................................................................................................... 2 Acronyms ................................................................................................................................................ 3 Executive summary ................................................................................................................................. 5 1. Introduction and background ........................................................................................................... 6 1.1 Forest and Climate Protection Project - Phase II .................................................................. 6 1.2 Methodological framework .................................................................................................... 6 1.3 Definition of terms and concepts ........................................................................................... 7 1.3.1 Forest ........................................................................................................................... 7 1.3.2 Species abundance and diversity ................................................................................ 7 1.3.3 Carbon pools ................................................................................................................ 8 1.3.4 IPCC key categories .................................................................................................... 9 1.3.5 IPCC tiers ..................................................................................................................... 9 1.3.6 Forest sampling-related terms ................................................................................... 10 2. Objectives ...................................................................................................................................... 11 2.1 General objectives .............................................................................................................. 11 2.2 Areal sampling frame .......................................................................................................... 11 2.3 Scope and content .............................................................................................................. 13 2.4 Variables of interest ............................................................................................................ 13 2.5 Targeted precision .............................................................................................................. 14 3. Inventory and estimation design .................................................................................................... 15 3.1 Sources of information ........................................................................................................ 15 3.1.1 Geographical–political subdivisions ........................................................................... 15 3.1.2 Forest strata and areas .............................................................................................. 15 3.1.3 Soil classes ................................................................................................................ 15 3.1.4 Wood specific gravity ................................................................................................. 17 3.2 Inventory method ................................................................................................................ 18 3.3 Sampling unit design ........................................................................................................... 18 3.3.1 Observations and measurements at the sample points ............................................. 19 3.3.2 Observations and measurements in the nested plots ................................................ 20 3.4 Sample size and margin of error ......................................................................................... 21 3.5 Sampling type and distribution ............................................................................................ 22 3.6 Estimation design ................................................................................................................ 24 3.6.1 Diversity indices ......................................................................................................... 24 3.6.2 Merchantable volume of trees .................................................................................... 24 3.6.3 Above-ground biomass of trees ................................................................................. 24 3.6.4 Above-ground biomass of bamboos .......................................................................... 25 3.6.5 Above-ground biomass of palms ............................................................................... 25 3.6.6 Above-ground biomass of rattan and tree ferns ........................................................ 26 3.6.7 Below-ground biomass of trees, bamboos and palms ............................................... 26 3.6.8 Above-ground biomass of standing dead wood ......................................................... 26 3.6.9 Biomass of lying (downed) dead wood ...................................................................... 26 3.6.10 Biomass of litter ........................................................................................................ 27 3.6.11 Conversion of biomass to carbon ............................................................................ 27 3.6.12 Statistical inference .................................................................................................. 27 4. Field data collection ....................................................................................................................... 29 4.1 Human and material resources ........................................................................................... 29 4.1.1 Human resources ....................................................................................................... 29 4.1.2 Inventory equipment................................................................................................... 29 4.2 Organization of the field work .............................................................................................. 30 4.2.1 Field manual ............................................................................................................... 30 4.2.2 Training ...................................................................................................................... 30 4.2.3 Inventory camps ......................................................................................................... 30 4.3 Getting to and marking of sampling units ............................................................................ 31 4.3.1 Getting to the sample points ...................................................................................... 31 4.3.2 Location of sample points and plot centers................................................................ 32 4.3.3 Permanent marking of sample points and plot centers .............................................. 33 4.3.4 Inaccessible sample points and plot centers
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