应用生态学报2018，Vol.29Issue(2)：474-482,9.DOI:10.13287/j.1001-9332.201802.002
植物质量、模拟增温及生境对凋落物分解的相对贡献
The relative contributions of plant quality, simulated rising temperature, and habitat to litter decomposition
摘要
Abstract
With litter bag methods,we examined mass loss rates and different chemical fractions of litters from two wetland plant species,Zizania caduciflora and Hippuris vulgaris.Those two species examined here varied significantly in their initial litter chemical traits.Experiment was performed under simulated rising temperature (1.5-2.0 ℃),and under three different habitats (air,air-water interface and water-soil interface).The results showed that,during one-year decomposition period,the mass resi-dual rates exhibited distinct seasonal dynamics,and there were strong interactive effects between seasonal dynamics and environmental factors.Different factors contributed differently for the variation of litter decomposition,28.8％ of which being explained by litter quality,6.3％ of which being explained by rising temperature,and 34.9％ being explained by habitat.Along with the decomposition,the contents of different chemical fractions (easy or hard to decompose) varied greatly.Among them,nitrogen contents in H.vulgaris decreased by 53.1％,while the lignin contents increased by 45.4％.Overall,habitat was the most important factor driving litter decomposition,the second was litter quality,and rising temperature had minor effect.关键词
凋落物/分解速率/植物质量/增温/生境Key words
litter/decomposition rate/plant mass/rising temperature/habitat.引用本文复制引用
王行,闫鹏飞,展鹏飞,张晓宁,刘振亚,郭玉静,肖德荣..植物质量、模拟增温及生境对凋落物分解的相对贡献[J].应用生态学报,2018,29(2):474-482,9.基金项目
本文由国家自然科学基金项目(31500409,31370497)和云南省高原湿地科学省创新团队项目(2012HC007)资助 This work was supported by the National Natural Science Foundation of China (31500409,31370497) and the Yunnan Innovative Research Team of Plateau Wetland Science (2012HC007). （31500409,31370497）
