Model output from simulations of manganese-carbon interactions in temperate forest soil profiles

This archive contains model output, code, and scripts for simulations of coupled manganese-carbon cycling in temperate forest soil profiles. These model results were generated as part of a study investigating how manganese availability influences soil organic carbon stocks and demonstrating a new model framework for coupling carbon and manganese cycling. The simulations were in support of a manuscript: "Modeling interactive effects of manganese bioavailability, nitrogen deposition, and warming on soil carbon storage." The study addresses the research questions: How does Mn bioavailability, as driven by subsurface mineral properties, pH, and redox status, affect temperate forest soil organic carbon and litter carbon stocks? How is the relationship between Mn bioavailability and carbon cycling affected by changes in temperature and nitrogen deposition?" Model simulations were conducted in a reactive transport modeling framework using PFLOTRAN coupled to python. Multiple model simulations testing different Mn-bearing mineral solubilities, hydrological patterns, nitrogen deposition rates, and temperatures are included. Soil properties, including total and exchangeable Mn concentrations, are based on values reported for the Susquehanna Shale Hills Critical Zone Observatory (SSHCZO), a temperate forested watershed in central Pennsylvania, U.S.A where Mn cycling through vegetation has been documented. File formats include netCDF (.nc), python script (.py), shell script (.sh), plain text PFLOTRAN input file (.in), and plain text PFLOTRAN database file (.dat), and gzipped tar archive (tar.gz).

本归档文件包含温带森林土壤剖面锰-碳耦合循环模拟所需的模型输出、代码与脚本。本次模型结果为一项研究的产出成果，该研究旨在揭示锰有效性对土壤有机碳储量的影响，并提出一套全新的碳-锰循环耦合模型框架。本模拟工作服务于一篇已投稿的学术论文：《锰生物有效性、氮沉降与增温对土壤碳储量的交互影响模拟》。

本研究围绕以下两个核心科学问题展开：其一，受地下矿物特性、pH值与氧化还原状态调控的锰生物有效性，如何影响温带森林土壤有机碳及凋落物碳储量？其二，温度与氮沉降变化会如何改变锰生物有效性与碳循环之间的关联？

本次模拟采用耦合Python的反应性输运模型框架PFLOTRAN（PFLOTRAN）完成。数据集包含多组模型模拟结果，分别测试了不同含锰矿物溶解度、水文模式、氮沉降速率与温度条件下的循环过程。

本次模拟采用的土壤参数（包括总锰浓度与可交换态锰浓度）均取自美国宾夕法尼亚州中部温带森林流域萨斯奎哈纳页岩关键带观测站（Susquehanna Shale Hills Critical Zone Observatory, SSHCZO）的公开数据，该观测站已有关于植被介导锰循环的相关研究记录。

本归档包含的文件格式包括：netCDF（.nc）格式文件、Python脚本（.py）、Shell脚本（.sh）、纯文本格式PFLOTRAN输入文件（.in）、纯文本格式PFLOTRAN数据库文件（.dat），以及gzip压缩tar归档文件（tar.gz）。