Contents

1.1 Introduction 1.4

1.2 Overview of greenhouse gas emissions and removals in the AFOLU Sector 1.5

1.2.1 Science background 1.5

1.2.2 Carbon pool definitions and non-CO2 gases 1.8

1.3 Overview of inventory preparation for the AFOLU Sector 1.8

1.3.1 Land-use and management categories 1.9

1.3.2 Tier definitions for methods in AFOLU 1.10

1.3.3 Identification of key categories 1.10

1.3.4 Steps in preparing inventory estimates 1.14

1.4 Organisation of Volume 4 in 2006 IPCC Guidelines 1.14

Annex 1A Historical background on IPCC greenhouse gas inventory guidance for AFOLU Sector 1.20

References 1.21

Figures

Figure 1.1 The main greenhouse gas emission sources/removals and processes in managed ecosystems 1.6

Figure 1.2 Decision tree for identification of appropriate tier level for land remaining in the same land-use category, using Forest Land Remaining Forest Land as an example. 1.12

Figure 1.3 Decision tree for identification of appropriate Tier level for land converted to another land-use category, using Land Converted to Forest Land as an example 1.13

Figure 1.4 Structure of AFOLU Reporting 1.16

Tables

Table 1.1 Definitions for carbon pools used in AFOLU for each land-use category 1.9

Table 1.2 Land-use categories, carbon pools and non-CO2 gases to be estimated under Tier 1, their relevance to AFOLU sections, and the reference to 1996 IPCC Guidelines 1.17

Box 1.1 Framework of tier structure for AFOLU methods 1.11

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