- Original Article
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Global pattern of leaf litter nitrogen and phosphorus in woody plants
Annals of Forest Science volume 67, page 811 (2010)
Abstract
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• Forest ecosystems exert an important influence on global biogeochemical cycles. A global dataset of nitrogen (N) and phosphorus (P) concentrations in leaf-litter of woody plants was compiled from the literature. Among the 677 data sets, 482 included P concentrations and the N:P ratio.
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• At a global scale, the mean leaf-litter N and P and N:P ratio were 10.9 mg g−1, 0.85 mg g−1 and 18.3, respectively. Leaf-litter N and P were significantly correlated. When the data was grouped by continents, the highest mean N was found in Africa (19.5 mg g−1), and the lowest in North America (8.18 mg g−1). P was significantly smaller in the Asian Islands (Japan and Malaysia, 0.44 mg g−1) than on the Asian mainland. For the global dataset, leaf-litter N increased linearly with mean annual temperature and annual precipitation and decreased with latitude. Although leaf-litter P showed no significant relationship with temperature, it declined linearly with precipitation and there was a convex quadratic relationship with latitude. For the global dataset and also for different functional groups (e.g. shrubs, evergreen broadleaf, deciduous broadleaf, and conifers) the leaf-litter N:P ratio generally followed a positive linear relationship with temperature and precipitation, and showed a concave quadratic response with latitude.
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• The differences in leaf-litter N:P ratio among functional groups and among continents should be taken into account when modeling biogeochemical cycles in different regions as well as on a global scale.
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Kang, H., Xin, Z., Berg, B. et al. Global pattern of leaf litter nitrogen and phosphorus in woody plants. Ann. For. Sci. 67, 811 (2010). https://doi.org/10.1051/forest/2010047
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DOI: https://doi.org/10.1051/forest/2010047