Leaf decomposition, flammability and functional trait data for tropical swamp forest tree species

Decomposition and fire are major carbon pathways in many ecosystems, yet the contribution of species identity to these processes can be difficult to predict. Plant decomposability and flammability have usually been studied separately but could be linked through shared predictive traits. We explored how decomposability and flammability were related to each other and to key plant functional traits in a tropical swamp forest in Singapore. Full methodological details <em>in situ</em> decomposition experiment in Nee Soon freshwater swamp forest, Singapore, laboratory flammability experiment, and leaf functional trait measurements can be found in the published article and supporting information stated below. Nur E. B. Rahman, Stuart W. Smith, Weng Ngai Lam, Kwek Yan Chong, Matthias S. E. Chua, Pei Yun Teo, Daniel W. J. Lee, Shi Yu Phua, Cheryl Y. Aw, Janice S. H. Lee, David A. Wardle. Leaf decomposition and flammability are largely decoupled across species in a tropical swamp forest despite sharing some predictive leaf functional traits. <em>New Phytologist</em> In this data repository, we have uploaded the following decomposition, flammability and trait data as well as secondary data used in our statistical analyses to generate the findings presented in the paper. Specific datasets include the following: litter_mass_loss.csv : raw data of leaf litterbag dry masses before and after 1 year in situ decomposition experiment in Nee Soon Swamp Forest flammability_leaf_temperature.csv : raw data of temperature recorded during flammability experiments of leaf litter and fresh leaves flammability_timings.csv : raw data of timings of flammability events, namely smouldering and pyrolysis recorded from video footage of flammability experiments senesced_leaf_dryweights_area.csv : senesced leaf raw data for calculating physical traits senesced_leaf_dryweights.csv: senesced leaf dry weights raw data freshtraits_measurements.csv: fresh leaf raw data for calculating physical traits decomposition_constants.csv: derived decomposition constants (k) for each species from the analysis of decomposition experiments. functional_traits_z_standardized.csv : all traits required for the analysis, consolidated following z-standardized transformation functional_traits_untransformed_decomposition_flammability.csv : all traits required for the analysis, untransformed (for back transforming axis labels) and species decomposition and flammability variables Raw leaf litter mass loss and leaf flammability data are associated meta-data file explaining the column headers and variables. For all other datasets please refer to the paper and supporting information.分解作用与燃烧是多数生态系统的核心碳循环路径，然而物种属性对这两类过程的贡献往往难以精准预测。以往针对植物分解性（decomposability）与可燃性（flammability）的研究通常独立开展，但二者可通过共享的预测性功能性状（functional traits）建立关联。本研究以新加坡热带沼泽森林为研究对象，探究了植物分解性与可燃性之间的关联，及其与关键植物功能性状的关系。详细的实验方法——包括在新加坡尼盛淡水沼泽森林开展的<em>原位（in situ）</em>分解实验、实验室可燃性测试以及叶片功能性状测定——详见下述已发表论文及配套辅助材料。 本研究作者包括Nur E. B. Rahman、Stuart W. Smith、Weng Ngai Lam、Kwek Yan Chong、Matthias S. E. Chua、Pei Yun Teo、Daniel W. J. Lee、Shi Yu Phua、Cheryl Y. Aw、Janice S. H. Lee、David A. Wardle，相关论文题为《尽管共享部分预测性叶片功能性状，热带沼泽森林中不同物种的叶片分解性与可燃性整体仍呈解耦状态》，发表于《新植物学家》（New Phytologist）。 本数据集仓库上传了本研究用于统计分析、以生成论文核心结论的各类分解、可燃性及性状数据，同时包含辅助二次数据。具体数据集如下： litter_mass_loss.csv：新加坡尼盛沼泽森林为期1年的原位分解实验前后，叶袋干重的原始实验数据 flammability_leaf_temperature.csv：叶片枯落物与新鲜叶片可燃性测试过程中记录的温度原始数据 flammability_timings.csv：通过可燃性测试录像记录的燃烧事件（即阴燃（smouldering）与热解（pyrolysis））时间原始数据 senesced_leaf_dryweights_area.csv：用于计算物理性状的成熟叶片原始数据 senesced_leaf_dryweights.csv：成熟叶片干重原始数据 freshtraits_measurements.csv：用于计算物理性状的新鲜叶片原始数据 decomposition_constants.csv：基于分解实验分析得到的各物种分解常数（decomposition constants，k值） functional_traits_z_standardized.csv：经Z标准化（z-standardized）变换整合后的所有分析所需性状数据 functional_traits_untransformed_decomposition_flammability.csv：未经过变换的所有分析所需性状数据（用于坐标轴标签反变换），以及各物种的分解性与可燃性相关变量 原始叶枯落物质量损失数据与叶片可燃性数据附带了元数据（meta-data）文件，用于说明各列表头与变量含义。其余数据集的详细说明请参见已发表论文及配套辅助材料。