globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.12859
论文题名:
The linkages between photosynthesis, productivity, growth and biomass in lowland Amazonian forests
作者: Malhi Y.; Doughty C.E.; Goldsmith G.R.; Metcalfe D.B.; Girardin C.A.J.; Marthews T.R.; del Aguila-Pasquel J.; Aragão L.E.O.C.; Araujo-Murakami A.; Brando P.; da Costa A.C.L.; Silva-Espejo J.E.; Farfán Amézquita F.; Galbraith D.R.; Quesada C.A.; Rocha W.; Salinas-Revilla N.; Silvério D.; Meir P.; Phillips O.L.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期:6
起始页码: 2283
结束页码: 2295
语种: 英语
英文关键词: Allocation ; Carbon cycle ; Carbon use efficiency ; Drought ; Gross primary productivity ; Net primary productivity ; Residence time ; Respiration ; Root productivity ; Tropical forests
Scopus关键词: biomass allocation ; carbon cycle ; drought ; forest ecosystem ; growth rate ; net primary production ; nutrient use efficiency ; photosynthesis ; residence time ; respiration ; tropical forest ; Amazonia ; carbon ; animal ; biomass ; carbon cycle ; drought ; forest ; growth, development and aging ; metabolism ; photosynthesis ; South America ; theoretical model ; tree ; tropic climate ; Animals ; Biomass ; Carbon ; Carbon Cycle ; Droughts ; Forests ; Models, Theoretical ; Photosynthesis ; South America ; Trees ; Tropical Climate
英文摘要: Understanding the relationship between photosynthesis, net primary productivity and growth in forest ecosystems is key to understanding how these ecosystems will respond to global anthropogenic change, yet the linkages among these components are rarely explored in detail. We provide the first comprehensive description of the productivity, respiration and carbon allocation of contrasting lowland Amazonian forests spanning gradients in seasonal water deficit and soil fertility. Using the largest data set assembled to date, ten sites in three countries all studied with a standardized methodology, we find that (i) gross primary productivity (GPP) has a simple relationship with seasonal water deficit, but that (ii) site-to-site variations in GPP have little power in explaining site-to-site spatial variations in net primary productivity (NPP) or growth because of concomitant changes in carbon use efficiency (CUE), and conversely, the woody growth rate of a tropical forest is a very poor proxy for its productivity. Moreover, (iii) spatial patterns of biomass are much more driven by patterns of residence times (i.e. tree mortality rates) than by spatial variation in productivity or tree growth. Current theory and models of tropical forest carbon cycling under projected scenarios of global atmospheric change can benefit from advancing beyond a focus on GPP. By improving our understanding of poorly understood processes such as CUE, NPP allocation and biomass turnover times, we can provide more complete and mechanistic approaches to linking climate and tropical forest carbon cycling. © 2015 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61561
Appears in Collections:影响、适应和脆弱性

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作者单位: Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, United Kingdom; Department of Physical Geography and Ecosystem Science, Lund University, Sölvegatan 12, Lund, Sweden; Instituto de Investigaciones de la Amazonia Peruana, Av. Abelardo Quiñones Km 2.5, Iquitos, Peru; College of Life and Environmental Sciences, Geography University of Exeter, Exeter, United Kingdom; Remote Sensing Division, National Institute for Space Research, Av. dos Astronautas, 1758, São José dos Campos, Sao Paulo, Brazil; Museo de Historia Natural Noel Kempff Mercado, Universidad Autónoma Gabriel René Moreno, Av. Irala no 565 - Casilla 2489, Santa Cruz, Bolivia; Instituto de Pesquisa Ambiental da Amazônia (IPAM), Rua Horizontina, 104, Centro, Canarana, Mato Grosso, Brazil; Department of Global Ecology, Carnegie Institution for Science, Stanford, CA, United States; Universidade do Estado do Mato Grosso, Campus Universitário, - Rod. BR 158, km 650, Nova Xavantina, Mato Grosso, Brazil; Universidade Federal do Pará, Instituto de Geociências, Faculdade de Meteorologia, Rua Augusto Correa, no 01, Belém, Pará, Brazil; Universidad Nacional San Antonio Abad del Cusco, Cusco, Peru; School of Geography, University of Leeds, Leeds, United Kingdom; Instituto Nacional de Pesquisas da Amazônia (INPA), Coordenação de Dinâmica Ambiental Avenida André Araújo 2936, Manaus CP 2223, Amazonas, Brazil; Pontificia Universidad Católica del Peru, Av. Universitaria 1801, San Miguel, Lima, Peru; School of Geosciences, University of Edinburgh, Edinburgh, United Kingdom; Research School of Biology, Australian National University, Canberra, ACT, Australia

Recommended Citation:
Malhi Y.,Doughty C.E.,Goldsmith G.R.,et al. The linkages between photosynthesis, productivity, growth and biomass in lowland Amazonian forests[J]. Global Change Biology,2015-01-01,21(6)
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