Data for “Fast-decaying plant litter enhances soil carbon in temperate forests, but not through microbial physiological traits”

This data package contains data and code used in the paper “Fast-decaying plant litter enhances soil carbon in temperate forests, but not through microbial physiological traits”. This paper details results from two studies: 1) a laboratory leaf litter incubation experiment (lab experiment) and 2) a multi-site observational field study (field study). Both studies were designed to test the relationships among litter quality, microbial physiological traits, and mineral-associated soil carbon (C). In the lab experiment, we incubated 16 temperate tree litters of differing chemical quality with isotopically distinct soil, measuring microbial physiological traits and the flow of litter-derived C into the mineral-associated soil C pool. In the field study, we sampled soils (0-5 cm) across six eastern US temperate forests, measuring microbial physiological traits, soil abiotic properties, and leaf litter chemistry. The analysis data are provided in two .csv files corresponding to either the lab experiment or field study. Both files contain data on litter chemistry, microbial physiological traits (growth and turnover rates, and carbon use efficiency [CUE]), and the mineral-associated soil C pool. The lab experiment dataset additionally contains litter-derived versus soil-derived soil C, respiration, and litter decomposition parameters. The field study dataset additionally contains site-level climatic information, ectomycorrhizal dominance of plots, and plot-level soil properties. Also provided is the R code and output reproducing the results in the related publication. Analyses were originally performed using R version 3.6.1 using the package "lavaan" and the packages listed on lines 5-7 in the file "data.R".

本数据包包含发表于论文《快速降解植物凋落物增强温带森林土壤碳库，但并非通过微生物生理性状》所用的数据与代码。该论文详述了两项研究的成果：1）实验室叶片凋落物培养实验（lab experiment）；2）多站点野外观测研究（field study）。两项研究均旨在验证凋落物质量、微生物生理性状与矿物结合态土壤碳（mineral-associated soil C）之间的关联。在实验室实验中，我们将16种化学组成各异的温带树木凋落物与同位素特征不同的土壤进行培养，测定了微生物生理性状以及凋落物源碳向矿物结合态土壤碳库的迁移过程。在野外观测研究中，我们在美国东部6处温带森林中采集0-5 cm深度的土壤样品，测定了微生物生理性状、土壤非生物属性以及叶片凋落物化学组成。分析数据以两个.csv文件提供，分别对应实验室实验与野外观测研究。两个文件均包含凋落物化学组成、微生物生理性状（生长与周转速率、碳利用效率（carbon use efficiency [CUE]））以及矿物结合态土壤碳库相关数据。实验室实验数据集额外包含凋落物源与土壤源土壤碳、呼吸速率以及凋落物分解参数；野外观测研究数据集额外包含站点级气候信息、样地外生菌根优势度以及样地级土壤属性。此外还提供了复现该相关研究成果的R代码与运行结果。本分析最初使用R 3.6.1版本完成，所依赖的包包括"lavaan"以及"data.R"文件第5-7行所列的其他包。