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Warming effects on the decomposition of two litter species in model subtropical forests.
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- Author(s): Liu, Juxiu; Liu, Shuange; Li, Yiyong; Liu, Shizhong; Yin, Guangcai; Huang, Juan; Xu, Yue; Zhou, Guoyi
- Source:
Plant & Soil; Nov2017, Vol. 420 Issue 1/2, p277-287, 11p, 1 Diagram, 3 Charts, 6 Graphs- Subject Terms:
- Source:
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- Abstract: Aims: Warming has the potential to alter plant litter mass loss and nutrient release during decomposition. However, a great deal of uncertainty remains concerning how other factors such as litter species or substrate quality might modify the effects of increased temperature on decomposition. Meanwhile, the temperature sensitivity of plant litter decay in tropical and subtropical forest ecosystems remains poorly resolved. Methods: This study was designed to assess the effects of experimental warming on litter decomposition and nutrient release of two contrasting tree species ( Schima superba and Machilus breviflora) by translocating model forest ecosystems from the high-elevation sites to the lower-elevation sites in subtropical China. Translocating model mountain evergreen broad-leaved forest (MEBF) to the altitude of 300 m and 30 m increased the average monthly soil temperature at 5 cm depth by 0.88 and 1.84 °C, respectively during the experimental period. Translocating model coniferous and broad-leaved mixed forest (CBMF) to the altitude of 30 m increased the average monthly soil temperature at 5 cm depth by 0.85 °C. Results: We found that experimental warming accelerated litter decomposition in both model forest types, and the promoting efficiency was greater when the temperature increased. The litter with high quality ( Schima superba) had stronger response to warming than low quality litter ( Machilus breviflora). Warming accelerated Na, K, Mg, P, N and Ca release from Schima superba litter, but only simulated Ca release from Machilus breviflora litter. Overall, litter decomposition was controlled by the order: soil temperature > litter quality > soil moisture > litter incubation forest type under experimental warming in the subtropical China. Conclusion: We conclude that leaf litter decomposition was facilitated by experimental warming in subtropical China. Litter species might modify the effects of increased temperature on litter decomposition; however, forest type has no effect on litter decomposition. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Plant & Soil is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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