Skip to Main content Skip to Navigation
Journal articles

Functional traits drive the contribution of solar radiation to leaf litter decomposition among multiple arid-zone species

Abstract : In arid zones, strong solar radiation has important consequences for ecosystem processes. To better understand carbon and nutrient dynamics, it is important to know the contribution of solar radiation to leaf litter decomposition of different arid-zone species. Here we investigated: (1) whether such contribution varies among plant species at given irradiance regime, (2) whether interspecific variation in such contribution correlates with interspecific variation in the decomposition rate under shade; and (3) whether this correlation can be explained by leaf traits. We conducted a factorial experiment to determine the effects of solar radiation and environmental moisture for the mass loss and the decomposition constant k-values of 13 species litters collected in Northern China. The contribution of solar radiation to leaf litter decomposition varied significantly among species. Solar radiation accelerated decomposition in particular in the species that already decompose quickly undershade. Functional traits, notably specific leaf area, might predict the interspecific variation in that contribution. Our results provide the first empirical evidence for how the effect of solar radiation on decomposition varies among multiple species. Thus, the effect of solar radiation on the carbon flux between biosphere and atmosphere may depend on the species composition of the vegetation.
Document type :
Journal articles
Complete list of metadatas

https://hal-univ-rennes1.archives-ouvertes.fr/hal-01195874
Contributor : Valerie Briand <>
Submitted on : Tuesday, September 8, 2015 - 3:59:15 PM
Last modification on : Wednesday, February 26, 2020 - 11:22:34 AM

Links full text

Identifiers

Citation

Xu Pan, Yao-Bin Song, Guo-Fang Liu, Yu-Kun Hu, Xue-Hua Ye, et al.. Functional traits drive the contribution of solar radiation to leaf litter decomposition among multiple arid-zone species. Scientific Reports, Nature Publishing Group, 2015, 5 (1), pp.13217. ⟨10.1038/srep13217⟩. ⟨hal-01195874⟩

Share

Metrics

Record views

222