Database of Riparian Floodplain Boundaries for the San Carlos and Gila Rivers on the San Carlos Apache Reservation and Upper Gila River Watershed (1935 - 2021)

We developed this spatial database of historic and current floodplains to analyze trends in vegetation conditions, identify areas more at risk of degradation, and assess the relationship between riparian vegetation dynamics and climate conditions.Our study area is the riparian areas along the San Carlos River and Gila River within the San Carlos Apache Reservation and the Upper Gila River Level-4 Hydrologic Unit Code (HUC) watershed. The product was developed by digitizing the active channel and primary riparian floodplain using historic 1935 aerial imagery (Arizona State University GeoData, 2021) and National Agriculture Imagery Program (NAIP) aerial imagery from 2019 (U.S. Department of Agriculture, 2021). This data was used in the development of the following data release: Petrakis, R.E., Norman, L.M., Middleton, B.R., 2023, Mapping Riparian Vegetation Response to Climate Change on the San Carlos Apache Reservation and Upper Gila River Watershed to Inform Restoration Priorities: 1935 to Present - Database of Trends in Vegetation Properties and Climate Adaptation Variables: U.S. Geological Survey data release, https://doi.org/10.5066/P9HL0N5T. And in support of the following publication: Petrakis, R.E., Norman, L.M., Middleton, B.R., 2023. Riparian Vegetation Response amid Variable Climate Conditions across the Upper Gila River Watershed: Informing Tribal Restoration Priorities. Frontiers in Environmental Science. https://doi.org/10.3389/fenvs.2023.1179328. This Parent data release consists of three shapefiles, or Child Items. The first two shapefiles show the extent of the historic (i.e., 1935) and current (i.e., 2019) riparian floodplain, including the active channel and primary riparian floodplain portions, along the San Carlos River and Gila River within the San Carlos Apache Reservation. The first shapefile - 1935 Riparian Floodplain and Active Channel Boundaries for the San Carlos River and Gila River - was produced for 1935, representing historic conditions, by digitizing the active channel and primary riparian floodplain using 1935 aerial imagery. The second shapefile - 2019 Riparian Floodplain and Active Channel Boundaries for the San Carlos River and Gila River - was produced for 2019, representing current conditions, by digitizing the active channel and primary riparian floodplain using National Agriculture Imagery Program (NAIP) aerial imagery from 2019. The final shapefile - 2019 Riparian Floodplain for the San Carlos River and Gila River within the Upper Gila River Level-4 Hydrologic Unit Code Watershed - shows the boundary of the riparian floodplain for the Gila River and San Carlos River across the entire Upper Gila River Level-4 HUC.

我们构建了这套历史与当代河漫滩空间数据库，旨在分析植被状况变化趋势、识别退化风险更高的区域，并评估河岸植被动态与气候条件之间的关联。本研究的研究区为圣卡洛斯阿帕奇印第安人保留地内的圣卡洛斯河与希拉河沿岸地带，以及四级水文单元代码（Level-4 Hydrologic Unit Code, HUC）希拉河上游流域。
本数据集通过数字化活动河道与主要河岸河漫滩生成，所用数据源包括1935年航空影像（亚利桑那州立大学地理数据，2021）以及2019年美国农业部农业航空影像计划（National Agriculture Imagery Program, NAIP）航空影像（美国农业部，2021）。
该数据被用于以下数据集发布：Petrakis, R.E.、Norman, L.M.、Middleton, B.R.，2023年，《圣卡洛斯阿帕奇印第安人保留地及希拉河上游流域河岸植被对气候变化的响应制图——为修复优先级提供参考：1935年至今植被属性与气候适应变量趋势数据库》，美国地质调查局数据集发布，https://doi.org/10.5066/P9HL0N5T。同时支撑了以下发表论文：Petrakis, R.E.、Norman, L.M.、Middleton, B.R.，2023年，《希拉河上游流域多变气候条件下的河岸植被响应：为部落修复优先级提供参考》，《环境科学前沿》（Frontiers in Environmental Science），https://doi.org/10.3389/fenvs.2023.1179328。
本父数据集包含三个矢量形状文件（shapefile），或称子项。前两个形状文件展示了圣卡洛斯阿帕奇印第安人保留地内圣卡洛斯河与希拉河沿岸的历史（即1935年）与当代（即2019年）河岸河漫滩范围，涵盖活动河道与主要河岸河漫滩两部分。第一个形状文件——《圣卡洛斯河与希拉河1935年河岸河漫滩及活动河道边界》——基于1935年航空影像数字化活动河道与主要河岸河漫滩生成，代表1935年的历史状况。第二个形状文件——《圣卡洛斯河与希拉河2019年河岸河漫滩及活动河道边界》——基于2019年美国农业部农业航空影像计划（NAIP）航空影像数字化活动河道与主要河岸河漫滩生成，代表2019年的当前状况。第三个形状文件——《四级水文单元代码（HUC）希拉河上游流域内圣卡洛斯河与希拉河2019年河岸河漫滩》——展示了整个四级HUC希拉河上游流域内圣卡洛斯河与希拉河的河岸河漫滩边界。