Data and R workspace for "Quantifying Impacts of Fire on Flow Regimes in Southeastern Amazon Basins"

This resource contains the data and R workspace required for reproducing the analyses in the following manuscript: Citation for: \"Quantifying Impacts of Wildfire on Quantifying Impacts of Fire on Flow Regimes in Southeastern Amazon Basins\" Included in this resource are: 1) the R and Google Earth Enginer scripts used to download and process streamflow, precipitation, and burn data; 2) the outputs generated from the R scripts; 3) a description of the connections between scripts and outputs; and 4) a description of the execution sequence of the R scripts. These inclusions are described in this resource's \"read me\" file. For additional context, we provide the abstract from the \"Quantifying Impacts of Wildfire on Quantifying Impacts of Fire on Flow Regimes in Southeastern Amazon Basins\" manuscript: The increasing spread of fire within the Amazon rainforest is a significant disturbance that has the potential to alter flow regimes and subsequently impact local ecology and ecosystem services. While previous studies have examined the impact of land cover change on streamflow, the specific effects of fire on the hydrology of Amazonian forested catchments remain uncertain, especially in previously undisturbed forests. This study investigates the impacts of fire on hydrology in the Amazon using a before-after control-impact (BACI) paired watershed approach. Our analysis tested for post-fire increases in the magnitude and variability of the streamflow regimes of five watersheds in the Southeastern Amazon. Flow regime magnitude and variability were quantified using the monthly metrics of basin yield and basin yield coefficient of variation, number of reversals, and average rise rate, respectively. Differences in metrics were assessed before and after fire disturbance, relative to nearby reference watersheds. Following fire disturbance in these five watersheds, three watersheds showed increases in magnitude and four watersheds showed increases in variability. The range in fire effect size was 6.01%-7.98% for streamflow magnitude and 10.89%-70.28% for variability. Our findings suggest that hydrological effects of fire are present in the Amazon, with the primary impact being increases in streamflow variability. Overall, this study provides valuable insights into the impact of fire on Amazonian catchment hydrology and highlights the importance of considering fire as a factor in managing and protecting tropical forest ecosystems.本数据集包含复现下述论文中全部分析所需的数据与R工作空间，相关引用信息如下： 《量化亚马孙东南部流域野火对径流格局的影响》（原论文标题："Quantifying Impacts of Wildfire on Quantifying Impacts of Fire on Flow Regimes in Southeastern Amazon Basins"） 本数据集包含以下内容：1）用于下载并处理径流、降水与火烧数据的R脚本与谷歌地球引擎（Google Earth Engine）脚本；2）R脚本生成的分析结果；3）脚本与分析结果间关联关系的说明文档；4）R脚本执行顺序的说明文档。上述内容的详细说明均收录于本数据集的"read me"文件中。 为提供更多背景信息，我们附上该论文的摘要： 亚马孙雨林内野火的蔓延范围持续扩大，这一重大干扰事件可能改变径流格局，进而对当地生态系统及生态服务功能造成影响。过往研究已探讨了土地覆被变化对径流的影响，但野火对亚马孙森林集水区水文过程的具体效应仍不明确，在此前未受干扰的森林区域中尤为如此。 本研究采用对照-影响前后配对流域法（before-after control-impact, BACI），探究野火对亚马孙地区水文过程的影响。我们针对亚马孙东南部5个流域的径流格局，检验了野火后径流幅值与变异性的变化情况。其中，径流格局的幅值与变异性分别通过月尺度的流域产水量、流域产水量变异系数、流量反转次数以及平均上升速率这四项指标进行量化。 研究以邻近的参考流域为对照，评估了野火扰动前后各项径流指标的差异。在这5个受野火扰动的流域中，有3个流域的径流幅值出现上升，4个流域的径流变异性有所增加。野火对径流幅值的影响幅度为6.01%~7.98%，对径流变异性的影响幅度为10.89%~70.28%。 研究结果表明，野火对亚马孙地区的水文过程存在显著影响，其主要效应为提升径流变异性。本研究为理解野火对亚马孙森林集水区水文过程的影响提供了重要参考，同时强调了在热带森林生态系统的管理与保护工作中，需将野火作为关键影响因素加以考量。