Mixing litter from deciduous and evergreen trees enhances decomposition in a subtropical karst forest in southwestern China | |
Changcheng Liu; Yuguo Liu; Ke Guo; Haiwei Zhao; Xianguo Qiao; Shijie Wang; Lin Zhang; Xianli Cai | |
2016 | |
Source Publication | Soil Biology and Biochemistry
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Volume | 101Pages:44-54 |
Abstract | In the karst region of southwestern China, mixed evergreen and deciduous broad-leaved forest is typical vegetation, differing remarkably from the evergreen broad-leaved forest developed in non-karst regions in the same latitudinal zone. Litterinput from deciduous trees influences the characteristics of the litter layer, which could affect decomposition dynamics. We evaluated the role of deciduous trees in regulating the decomposition of mixed leaf litter in a karst forest. Four species richness treatments (one, two, four and six species) were designed to evaluate the decomposition rates of litter mixtures for two years. The ratio of deciduous to evergreen species numbers was 1:1 in all mixtures. Litter mass loss was positively correlated with initial nitrogen concentrations and negatively correlated with carbon:nitrogen ratios, suggesting that mass loss was controlled by nitrogen concentration of the litter mixture. Litter mixing accelerated the mass loss by 5.0% and enhanced nutrient release by 4.8%–26.2% for different elements. Synergistic effects in the four-species mixture were usually strongest and increased over time. Although individual litter species within the mixtures showed idiosyncratic responses to litter species richness, mixing effects enhanced decomposition of evergreen litter species more than deciduous species. This study suggests that species composition was more important than species richness in driving non-additive effects on decomposition in this forest. Deciduous trees in karst ecosystems significantly contribute to nutrient cycling, through enhancing the decomposition of evergreen leaf litter. |
Keyword | Karst Ecosystem litter Species Richness litter Stoichiometry non-additive Mixture effect Species Composition decomposition Rate |
Indexed By | SCI |
Language | 英语 |
Document Type | 期刊论文 |
Identifier | http://ir.gyig.ac.cn/handle/42920512-1/9615 |
Collection | 环境地球化学国家重点实验室 |
Affiliation | 1.State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China 2.Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China 3.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China 4.Puding Karst Ecosystem Research Station, Chinese Academy of Sciences, Puding 562101, China 5.University of Chinese Academy of Sciences, Beijing 100049, China |
Recommended Citation GB/T 7714 | Changcheng Liu;Yuguo Liu;Ke Guo;Haiwei Zhao;Xianguo Qiao;Shijie Wang;Lin Zhang;Xianli Cai. Mixing litter from deciduous and evergreen trees enhances decomposition in a subtropical karst forest in southwestern China[J]. Soil Biology and Biochemistry,2016,101:44-54. |
APA | Changcheng Liu;Yuguo Liu;Ke Guo;Haiwei Zhao;Xianguo Qiao;Shijie Wang;Lin Zhang;Xianli Cai.(2016).Mixing litter from deciduous and evergreen trees enhances decomposition in a subtropical karst forest in southwestern China.Soil Biology and Biochemistry,101,44-54. |
MLA | Changcheng Liu;Yuguo Liu;Ke Guo;Haiwei Zhao;Xianguo Qiao;Shijie Wang;Lin Zhang;Xianli Cai."Mixing litter from deciduous and evergreen trees enhances decomposition in a subtropical karst forest in southwestern China".Soil Biology and Biochemistry 101(2016):44-54. |
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