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Non-additive effect of species diversity and temperature sensitivity of mixed litter decomposition in the alpine meadow on Tibetan Plateau

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Title: Non-additive effect of species diversity and temperature sensitivity of mixed litter decomposition in the alpine meadow on Tibetan Plateau
Authors: Duan, Jichuang, Wang, Shiping, Zhang, Zhenhua, Xu, Guangping, Luo, Caiyun, Chang, Xiaofeng, Zhu, Xiaoxue, Cui, Shujuan, Zhao, Xinquan, Wang, Wenying, Du, Mingyuan, Wang, SP (reprint author), Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing 100101, Peoples R China.
Publication Year: 2013
Collection: Northwest Institute of Plateau Biology: NWIPB OpenIR (Chinese Academy of Sciences) / 中国科学院西北高原生物研究所机构知识库
Description: Few studies of the effects of litter diversity on the temperature sensitivity of mixed litter mass loss (MLML) are available. We tested the hypothesis that high litter diversity would reduce the magnitude of effects of climate and environmental change on MLML with 0.5/1 mm litter bags and sampling once after 1 yr of decomposition, using 51 combinations of litter mixtures from 25 dominant species at 3200 and 3800 m elevations on the Tibetan Plateau. Generally, our study supported our hypothesis. High temperature (i.e. lower elevation) reduced the dependency of MLML and non-additive effects on species richness. Species composition significantly affected MLML and its Q(10) (i.e. the ratio of litter mass loss rate at a temperature T-1 that is 10 degrees C lower than a temperature T-2) when species richness was less than 8. Shrubs significantly decreased the Q(1)0 of MLML when the species richness of litter mixture was less than 4. These findings suggest that the influence of future warming on MLML may depend on the balance between the magnitude of the impacts of climate change on shrub invasion and loss of species diversity in alpine region. (C) 2012 Elsevier Ltd. All rights reserved. ; Few studies of the effects of litter diversity on the temperature sensitivity of mixed litter mass loss (MLML) are available. We tested the hypothesis that high litter diversity would reduce the magnitude of effects of climate and environmental change on MLML with 0.5/1 mm litter bags and sampling once after 1 yr of decomposition, using 51 combinations of litter mixtures from 25 dominant species at 3200 and 3800 m elevations on the Tibetan Plateau. Generally, our study supported our hypothesis. High temperature (i.e. lower elevation) reduced the dependency of MLML and non-additive effects on species richness. Species composition significantly affected MLML and its Q(10) (i.e. the ratio of litter mass loss rate at a temperature T-1 that is 10 degrees C lower than a temperature T-2) when species richness was less than 8. Shrubs ...
Document Type: report
Language: unknown
Relation: SOIL BIOLOGY & BIOCHEMISTRY; Duan, JC; Wang, SP; Zhang, ZH; Xu, GP; Luo, CY; Chang, XF; Zhu, XX; Cui, SJ; Zhao, XQ; Wang, WY; Du, MY.Non-additive effect of species diversity and temperature sensitivity of mixed litter decomposition in the alpine meadow on Tibetan Plateau,SOIL BIOLOGY & BIOCHEMISTRY,2013,57():841-847; http://210.75.249.4/handle/363003/3961; http://210.75.249.4/handle/363003/16734; http://210.75.249.4/handle/363003/21830; http://210.75.249.4/handle/363003/26926; http://210.75.249.4/handle/363003/32022; http://210.75.249.4/handle/363003/37118; http://210.75.249.4/handle/363003/42214; http://210.75.249.4/handle/363003/47294; http://210.75.249.4/handle/363003/52374; http://210.75.249.4/handle/363003/57454
Availability: http://210.75.249.4/handle/363003/3961
http://210.75.249.4/handle/363003/16734
http://210.75.249.4/handle/363003/21830
http://210.75.249.4/handle/363003/26926
http://210.75.249.4/handle/363003/32022
http://210.75.249.4/handle/363003/37118
http://210.75.249.4/handle/363003/42214
http://210.75.249.4/handle/363003/47294
http://210.75.249.4/handle/363003/52374
http://210.75.249.4/handle/363003/57454
Rights: 6
Accession Number: edsbas.D18CC97E
Database: BASE
Description
Abstract:Few studies of the effects of litter diversity on the temperature sensitivity of mixed litter mass loss (MLML) are available. We tested the hypothesis that high litter diversity would reduce the magnitude of effects of climate and environmental change on MLML with 0.5/1 mm litter bags and sampling once after 1 yr of decomposition, using 51 combinations of litter mixtures from 25 dominant species at 3200 and 3800 m elevations on the Tibetan Plateau. Generally, our study supported our hypothesis. High temperature (i.e. lower elevation) reduced the dependency of MLML and non-additive effects on species richness. Species composition significantly affected MLML and its Q(10) (i.e. the ratio of litter mass loss rate at a temperature T-1 that is 10 degrees C lower than a temperature T-2) when species richness was less than 8. Shrubs significantly decreased the Q(1)0 of MLML when the species richness of litter mixture was less than 4. These findings suggest that the influence of future warming on MLML may depend on the balance between the magnitude of the impacts of climate change on shrub invasion and loss of species diversity in alpine region. (C) 2012 Elsevier Ltd. All rights reserved. ; Few studies of the effects of litter diversity on the temperature sensitivity of mixed litter mass loss (MLML) are available. We tested the hypothesis that high litter diversity would reduce the magnitude of effects of climate and environmental change on MLML with 0.5/1 mm litter bags and sampling once after 1 yr of decomposition, using 51 combinations of litter mixtures from 25 dominant species at 3200 and 3800 m elevations on the Tibetan Plateau. Generally, our study supported our hypothesis. High temperature (i.e. lower elevation) reduced the dependency of MLML and non-additive effects on species richness. Species composition significantly affected MLML and its Q(10) (i.e. the ratio of litter mass loss rate at a temperature T-1 that is 10 degrees C lower than a temperature T-2) when species richness was less than 8. Shrubs ...