globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.foreco.2016.02.018
Scopus记录号: 2-s2.0-84959020617
论文题名:
Spatio-temporal water uptake patterns of tree saplings are not altered by interspecific interaction in the early stage of a subtropical forest
作者: Trogisch S.; Salmon Y.; He J.-S.; Hector A.; Scherer-Lorenzen M.
刊名: Forest Ecology and Management
ISSN:  0378-1127
出版年: 2016
卷: 367
起始页码: 52
结束页码: 61
语种: 英语
英文关键词: BEF-China ; Deuterium ; Niche differentiation ; Resource complementarity ; Stable isotopes ; Subtropical broadleaved forest
Scopus关键词: Deuterium ; Isotopes ; Mixtures ; Soil moisture ; Soils ; Tropics ; BEF-China ; Broad-leaved forests ; Niche differentiation ; Resource complementarity ; Stable isotopes ; Forestry ; Castanea ; Castanea henryi ; Elaeocarpus ; Quercus ; Quercus serrata ; Schima ; Schima superba
英文摘要: Complementary resource use has often been claimed to explain positive effects of plant diversity on ecosystem functioning, but the underlying mechanisms of complementarity have rarely been directly quantified in forest systems. The aim of this study was to characterize spatial and temporal water uptake of subtropical tree saplings, to assess the role of interspecific interaction on water uptake patterns and to quantify species niche breadth and overlap. Our experiment comprised two deciduous (Castanea henryi, Quercus serrata) and two evergreen tree species (Elaeocarpus decipiens, Schima superba) that were each planted in monoculture and 4-species mixture. We used deuterium-enriched water to trace seasonal water uptake from 5 cm and 20 cm soil depth. Castanea exploited predominantly the upper soil (74% of overall tracer uptake across treatments) whereas Quercus (50%), Elaeocarpus (57%) and Schima (62%) tended to use both soil layers more equally. Species identity had an overall significant effect on isotopic enrichment in stem water. There was no effect of species richness: niche breadth and overlap of single species was not affected by interspecific interactions in mixtures. Niche overlap between deciduous species was lowest (74%) whereas the two evergreen species had similar water uptake patterns (91%). According to our results, interspecific competition did not alter water uptake patterns of the studied species during the early phase of forest establishment. Thus, soil water uptake complementarity could only occur through inherent (fundamental) specific differences in water uptake niches based on sapling specialization, while phenotypic adjustments to interspecific interaction or neighbor diversity are less important. © 2016 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64993
Appears in Collections:影响、适应和脆弱性

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作者单位: Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany; Institute of Agricultural Sciences, ETH Zurich, Zurich, Switzerland; Institute of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland; School of Geosciences, University of Edinburgh, Crew Building, the King's Buildings, Edinburgh, Scotland, United Kingdom; Department of Ecology, Col. of Urban and Env. Sciences and Key Lab. for Earth Surface Processes of the Ministry of Edu., Peking University, Beijing, China; Department of Plant Sciences, University of Oxford, United Kingdom; Faculty of Biology, Geobotany, University of Freiburg, Freiburg, Germany; Faculty of Science, Department of Physics, University of Helsinki, P.O. Box 48, Erik Palménin aukio 1, Finland

Recommended Citation:
Trogisch S.,Salmon Y.,He J.-S.,et al. Spatio-temporal water uptake patterns of tree saplings are not altered by interspecific interaction in the early stage of a subtropical forest[J]. Forest Ecology and Management,2016-01-01,367
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