首页> 中文期刊> 《中国林学(英文版)》 >Tropical forest canopies and their relationships with climate and disturbance:results from a global dataset of consistent field-based measurements

Tropical forest canopies and their relationships with climate and disturbance:results from a global dataset of consistent field-based measurements

         

摘要

Background:Canopy structure,defined by leaf area index(LAI),fractional vegetation cover(FCover)and fraction of absorbed photosynthetically active radiation(fAPAR),regulates a wide range of forest functions and ecosystem services.Spatially consistent field-measurements of canopy structure are however lacking,particularly for the tropics. Methods:Here,we introduce the Global LAI database:a global dataset of field-based canopy structure measurements spanning tropical forests in four continents(Africa,Asia,Australia and the Americas).We use these measurements to test for climate dependencies within and across continents,and to test for the potential of anthropogenic disturbance and forest protection to modulate those dependences. Results:Using data collected from 887 tropical forest plots,we show that maximum water deficit,defined across the most arid months of the year,is an important predictor of canopy structure,with all three canopy attributes declining significantly with increasing water deficit.Canopy attributes also increase with minimum temperature,and with the protection of forests according to both active(within protected areas)and passive measures(through topography).Once protection and continent effects are accounted for,other anthropogenic measures(e.g.human population)do not improve the model. Conclusions:We conclude that canopy structure in the tropics is primarily a consequence of forest adaptation to the maximum water deficits historically experienced within a given region.Climate change,and in particular changes in drought regimes may thus affect forest structure and function,but forest protection may offer some resilience against this effect.

著录项

  • 来源
    《中国林学(英文版)》 |2018年第1期|77-90|共14页
  • 作者单位

    School of Natural and Environmental Sciences,Newcastle University,Upon Tyne,Newcastle NE1 7RU,UK;

    Department of Geography, University College London,Gower Street,London WC1E 6BT,UK;

    Earth Observation,Climate and Optical Group,National Physical Laboratory, Hampton Road,Teddington,Middlesex TW11 0LW,UK;

    Department of Archaeology and Ancient History,Uppsala Universitet,P.O.Box 256,-751 05 Uppsala,SE,Sweden;

    Environment Department,University of York,York,UK;

    Center for Macroecology,Evolution and Climate, University of Copenhagen,Universitetsparken 15,2100 Copenhagen,DK, Denmark;

    Durrell Institute of Conservation and Ecology(DICE),School of Anthropology and Conservation,University of Kent,Canterbury CT2 7NR,UK;

    Department of Biology,College of Natural Sciences,Jimma University, Jimma,Ethiopia;

    Wageningen University&Research,Laboratory of Geo-Information Science and Remote Sensing,Droevendaalsesteeg 3,6708 PB Wageningen,the Netherlands;

    Environment Department,University of York,York,UK;

    Wageningen University&Research,Laboratory of Geo-Information Science and Remote Sensing,Droevendaalsesteeg 3,6708 PB Wageningen,the Netherlands;

    Center for International Forestry Research (CIFOR),Situ Gede,Sindang Barang,Bogor 16680,Indonesia;

    Departamento de Biología,área de Botánica,Universidad Autónoma de Madrid,Calle Darwin 2,-28049 Madrid,ES,Spain;

    Conservation Ecology Research Unit, University of Pretoria,Hatfield,Pretoria,South Africa;

    Department of Geography and Planning, University of Toronto,Toronto,ON,Canada;

    Department of Geography,University of Helsinki,00014 Helsinki,Finland;

    Department of Geography,Faculty of Humanities and Social Sciences,Mkwawa University College of Education,P.O.Box 2513,Iringa,Tanzania;

    Department of Geography,Faculty of Humanities and Social Sciences,Mkwawa University College of Education,P.O.Box 2513,Iringa,Tanzania;

    Department of Science,Information Technology,Innovation and the Arts,Queensland Government,Brisbane,Australia;

    Department of Plant Sciences,University of Cambridge,Downing Street,Cambridge CB2 3EA,UK;

    Department of Geography, University College London,Gower Street,London WC1E 6BT,UK;

    Department of Forestry,Sokoine University of Agriculture,Morogoro,Tanzania;

    Operation Wallacea Ltd,Wallace House,Old Bolingbroke,Lincolnshire PE23 4EX,UK;

    Department of Conservation of Forest Resources and Ecotourism,Faculty of Forestry,Bogor Agricultural University,Kampus Fahutan,IPB Darmaga, Kotak Pos 168,Bogor 16001,Indonesia;

    Environment Department,University of York,York,UK;

    Department of Biology,University of York,York YO10 5DD,UK;

    Land and Water, Commonwealth Scientific and Industrial Research Organisation,Yarralumla, ACT,Australia;

    School of Mathematical and Geospatial Sciences,RMIT University,GPO Box 2476V,Melbourne,VIC 3001,Australia;

    Department of Biology,Geology,Physics and Inorganic Chemistry,Universidad Rey Juan Carlos,E-28933 Móstoles,Madrid,Spain;

    Tropical Forest and People Research Centre,University of the Sunshine Coast,Sippy Downs,Australia;

    Environment Department,University of York,York,UK;

    Flamingo Land Ltd., Malton,UK;

    The Institute of Biological and Environmental Sciences, Environmental Modelling Group,University of Aberdeen,Aberdeen,UK;

    Biological and Environmental Sciences,University of Stirling,Stirling FK9 4LA,UK;

    York Institute for Tropical Ecosystems,Environment Department, University of York,York YO10 5NG,UK;

    Department of Geography, University College London,Gower Street,London WC1E 6BT,UK;

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