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      A map of African humid tropical forest aboveground biomass derived from management inventories

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          Abstract

          Forest biomass is key in Earth carbon cycle and climate system, and thus under intense scrutiny in the context of international climate change mitigation initiatives (e.g. REDD+). In tropical forests, the spatial distribution of aboveground biomass (AGB) remains, however, highly uncertain. There is increasing recognition that progress is strongly limited by the lack of field observations over large and remote areas. Here, we introduce the Congo basin Forests AGB (CoFor-AGB) dataset that contains AGB estimations and associated uncertainty for 59,857 1-km pixels aggregated from nearly 100,000 ha of in situ forest management inventories for the 2000 – early 2010s period in five central African countries. A comprehensive error propagation scheme suggests that the uncertainty on AGB estimations derived from c. 0.5-ha inventory plots (8.6–15.0%) is only moderately higher than the error obtained from scientific sampling plots (8.3%). CoFor-AGB provides the first large scale view of forest AGB spatial variation from field data in central Africa, the second largest continuous tropical forest domain of the world.

          Abstract

          Measurement(s) organic material • aboveground biomass
          Technology Type(s) digital curation
          Sample Characteristic - Environment forested area
          Sample Characteristic - Location Central Africa

          Machine-accessible metadata file describing the reported data: 10.6084/m9.figshare.12504911

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          Most cited references21

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          21st Century drought-related fires counteract the decline of Amazon deforestation carbon emissions

          Tropical carbon emissions are largely derived from direct forest clearing processes. Yet, emissions from drought-induced forest fires are, usually, not included in national-level carbon emission inventories. Here we examine Brazilian Amazon drought impacts on fire incidence and associated forest fire carbon emissions over the period 2003–2015. We show that despite a 76% decline in deforestation rates over the past 13 years, fire incidence increased by 36% during the 2015 drought compared to the preceding 12 years. The 2015 drought had the largest ever ratio of active fire counts to deforestation, with active fires occurring over an area of 799,293 km2. Gross emissions from forest fires (989 ± 504 Tg CO2 year−1) alone are more than half as great as those from old-growth forest deforestation during drought years. We conclude that carbon emission inventories intended for accounting and developing policies need to take account of substantial forest fire emissions not associated to the deforestation process.
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            CTFS-ForestGEO: a worldwide network monitoring forests in an era of global change.

            Global change is impacting forests worldwide, threatening biodiversity and ecosystem services including climate regulation. Understanding how forests respond is critical to forest conservation and climate protection. This review describes an international network of 59 long-term forest dynamics research sites (CTFS-ForestGEO) useful for characterizing forest responses to global change. Within very large plots (median size 25 ha), all stems ≥ 1 cm diameter are identified to species, mapped, and regularly recensused according to standardized protocols. CTFS-ForestGEO spans 25 °S-61 °N latitude, is generally representative of the range of bioclimatic, edaphic, and topographic conditions experienced by forests worldwide, and is the only forest monitoring network that applies a standardized protocol to each of the world's major forest biomes. Supplementary standardized measurements at subsets of the sites provide additional information on plants, animals, and ecosystem and environmental variables. CTFS-ForestGEO sites are experiencing multifaceted anthropogenic global change pressures including warming (average 0.61 °C), changes in precipitation (up to ± 30% change), atmospheric deposition of nitrogen and sulfur compounds (up to 3.8 g N m(-2) yr(-1) and 3.1 g S m(-2) yr(-1)), and forest fragmentation in the surrounding landscape (up to 88% reduced tree cover within 5 km). The broad suite of measurements made at CTFS-ForestGEO sites makes it possible to investigate the complex ways in which global change is impacting forest dynamics. Ongoing research across the CTFS-ForestGEO network is yielding insights into how and why the forests are changing, and continued monitoring will provide vital contributions to understanding worldwide forest diversity and dynamics in an era of global change.
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              The Global Ecosystem Dynamics Investigation: High-resolution laser ranging of the Earth’s forests and topography

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                Author and article information

                Contributors
                p.ploton@gmail.com
                Journal
                Sci Data
                Sci Data
                Scientific Data
                Nature Publishing Group UK (London )
                2052-4463
                8 July 2020
                8 July 2020
                2020
                : 7
                : 221
                Affiliations
                [1 ]GRID grid.503016.1, ISNI 0000 0001 2160 870X, AMAP, Univ Montpellier, IRD, CNRS, INRAE, CIRAD, ; Montpellier, France
                [2 ]GRID grid.121334.6, ISNI 0000 0001 2097 0141, CIRAD, UPR Forêts et Sociétés, F-34398 Montpellier, France; Université de Montpellier, ; F-34000 Montpellier, France
                [3 ]CIRAD, UPR Forêts et Sociétés, Yaoundé, Cameroun
                [4 ]GRID grid.467700.2, ISNI 0000 0001 2182 2028, Center for Conservation and Sustainability, Smithsonian Conservation Biology Institute, , National Zoological Park, ; Washington, DC USA
                [5 ]GRID grid.5342.0, ISNI 0000 0001 2069 7798, CAVELab Computational and Applied Vegetation Ecology, Department of Applied Ecology and Environmental Biology, Faculty of Bioscience Engineering, , Ghent University, ; Ghent, 9000 Belgium
                [6 ]FRM Ingénierie, 34130 Mauguio – Grand Montpellier, France
                [7 ]Institut de pharmacopée et de médecine traditionnelle (Herbier National du Gabon), CENAREST, Libreville, Gabon
                [8 ]GRID grid.29273.3d, ISNI 0000 0001 2288 3199, Department of Plant Science, Faculty of Science, , University of Buea, ; Buea, Cameroon
                [9 ]Terre Environnement Aménagement, 13001 Marseille, France
                [10 ]GRID grid.4861.b, ISNI 0000 0001 0805 7253, Forest is Life, TERRA Teaching and Research Centre, Gembloux Agro-Bio Tech, , University of Liège, ; Gembloux, Belgium
                [11 ]GRID grid.412661.6, ISNI 0000 0001 2173 8504, Plant Systematic and Ecology Laboratory (LaBosystE), Department of Biology, Higher Teachers’ Training College, , University of Yaoundé I, ; P.O. Box 047, Yaoundé, Cameroun
                [12 ]GRID grid.453560.1, ISNI 0000 0001 2192 7591, ForestGEO, Smithsonian Tropical Research Institute, NMNH - MRC 166, ; P.O. Box 37012, Washington, DC 20013-7012 USA
                [13 ]Institut de Recherche en Ecologie Tropicale/Centre National de la Recherche Scientifique et Technologique, Libreville, Gabon
                [14 ]GRID grid.4989.c, ISNI 0000 0001 2348 0746, Faculty of Sciences, Evolutionary Biology and Ecology, , Université Libre de Bruxelles, CP160/12, 50 Av. F. Roosevelt, ; 1050 Brussels, Belgium
                [15 ]GRID grid.30064.31, ISNI 0000 0001 2157 6568, School of Biological Sciences, , Washington State University, ; 14204 NE Salmon Creek Ave, Vancouver, WA 98686 USA
                Author information
                http://orcid.org/0000-0002-8800-3593
                http://orcid.org/0000-0001-5473-709X
                http://orcid.org/0000-0002-5323-3866
                http://orcid.org/0000-0002-7523-5176
                http://orcid.org/0000-0001-5458-1523
                http://orcid.org/0000-0001-9281-5677
                http://orcid.org/0000-0001-9798-5616
                http://orcid.org/0000-0001-8208-3388
                http://orcid.org/0000-0003-4845-5090
                http://orcid.org/0000-0002-1136-4307
                Article
                561
                10.1038/s41597-020-0561-0
                7343822
                32641808
                b806ec57-f48b-439f-9613-a8ecdabe02d5
                © The Author(s) 2020

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

                The Creative Commons Public Domain Dedication waiver http://creativecommons.org/publicdomain/zero/1.0/ applies to the metadata files associated with this article.

                History
                : 18 March 2020
                : 8 June 2020
                Funding
                Funded by: ERA-NET FACCE ERA-GAS (ANR-17-EGAS-0002-01)
                Categories
                Data Descriptor
                Custom metadata
                © The Author(s) 2020

                environmental sciences,forestry,ecology,climate sciences

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