Forest resources assessment 1990

Tropical countries

Table of Contents

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ISBN 92-5-103390-0

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Table of Contents


Tables and Figures



Chapter I      BACKGROUND

1   Introduction

2   Objectives of assessment

3   Project implementation


1   Review of existing information

2   Review of approaches to assessment


1   Forest cover state and change assessment

2   Forest biomass state and change assessment

3   Survey of deforestation and forest degradation using high resolution satellite data

4   Assessment of forest fragmentation using coarse resolution satellite data


1   Forest cover state and change assessment

2   Forest biomass state and change assessment

3   The process of deforestation and forest degradation

4   Forest fragmentation


1   Forest management for conservation

2   Forest management for wood production

3   Forest plantations


Annex 1     Country tables

Annex 2     Abstract of technical reports and field documents

Annex 3     Project team

Annex 4     Project network

Annex 5     Country correspondents

Tables and Figures


1     State of forest inventory in the tropics at end 1990

2     Allocation of sampling units by region and expected standard error

3     Observations used for state and change assessment

4     Estimates of forest cover area and rate of deforestation by geographical subregion

5     Comparison of FAO/UNEP 1980 assessment with FAO 1990 assessment

6     Estimates of forest cover area and rate of deforestation by main ecological zone

7     Indicative estimates of species loss amongst higher plants due to deforestation

8     State of forest biomass and annual losses due to deforestation

9     Potential and actual biomass density and total biomass for forests of Tropical Asia by ecological zone

10   The change matrix for the Africa region based on the 31 samples

11   Changes in forest area by ecological zone - Tropical Africa region

12   Initial expected and present expected standard errors of forest cover estimates

13   Edge/core statistics in Acre State

14   Edge/core statistics in Rondonia State

15   Edge/core ratio in Acre and Rondonia, Brazil

16   Relation between edge/core ratio and deforestation

17   Extent of notified forest in the tropics classified by forest function at end 1990

18   Number and extent of conservation areas in the forestry, wildlife and other sectors

19   Estimated harvesting intensities and areas of broadleaved forest harvested annually

20   Reported and net forest plantation areas in the tropics at 1990

21   Estimates of reported areas of the main species


1     Objectives and outputs of the Forest Resources Assessment 1990

2     Forest cover state and change assessment (using existing reliable data)

3     Illustration of model curves for different ecological zones

4     Pan-tropical continuous forest resources survey design

5     Example of spatial and statistical outputs

6     Forest zones in the tropics

7     Present forest cover by ecological zone

8     Forest proportion vs. population density by forest formation

9     Species/area relationships, plant species - 86 countries

10   Land cover changes, Africa: 1981–90

11   Changes in closed forest cover, Africa: 1981–90

12   Changes in continuous forest cover, Africa: 1981–90

13   Continuous forest cover change by main ecological zone, Africa: 1981–90

14   Changes in pan-tropic forest cover by main ecological zone: 1981–90

15   Forest cover changes by main ecological zone: 1981–90

16   West Africa: NOAA derived forest map

17   Fragmentation vs. deforestation, West Africa

18   Acre: NOAA derived forest map

19   Rondonia: NOAA derived forest map

20   Trends in average annual production of non-coniferous industrial roundwood

21   Estimated areas of tropical closed broadleaved forests harvested annually

22   Annual deforestation and reforestation rates of the period 1981–90