Sediment particle distribution in a dammed reservoir under climate and land use scenarios (Carpathian Mts.)

The database contains a graphical representation of the modeling study results carried out for the upper Raba River catchment with the Dobczyce dammed reservoir, located in the Polish part of the Carpathian Mts. The study focused on tracking of three sediment fractions (mineral - SILT, CLAY; and mineral-organic - SMAG) from their source, to deposition place in the reservoir. For this purpose, the SWAT and AdH/PTM models were used, and combined on a digital platform - the Macromodel DNS. This allowed us to maintain the natural continuity of sediment transport between the catchment, river, and reservoir, and precisely indicate the particle deposition areas for each fraction. The analyzes were carried out with a monthly time step, taking into account the high variability of sediment loads flowing to the reservoir. The study also considered the impact of climate and land use changes on this process. The calibrated and verified SWAT model for the upper Raba catchment was used as the baseline scenario. Then, the combined climatic and land use scenarios (VS1-VS4) were applied. Climate change forecasts were based on data from Euro-CORDEX, RCM models [https://www.euro-cordex.net/] and Global Climate Models - GCM. They included RCP4.5 and RCP8.5 emission scenarios for short (2026-2035) and long time horizons (2046-2055). These climate scenarios were originally prepared for the Polish Urban Development Plans (UAP) [http://klimada.mos.gov.pl/en/]. The land use scenarios (forest and urban) were based on the results of the FORECOM project [http://www.gis.geo.uj.edu.pl/FORECOM/index.html]. In order to track the individual sediment fractions in the reservoir, it was divided into four zones (A-D). The database consists of fifteen excel sheets: - research area - location of the analyzed catchment and reservoir; - scenarios - list of the prepared scenarios together with their description; - NOV - OCT - sediment mineral particle (SILT, CLAY) distribution maps for the Dobczyce Reservoir, under the baseline and variant scenarios; - SMAG - sediment organic mineral particle (SMAG) distribution maps for the Dobczyce Reservoir, under the baseline and variant scenarios.

本数据集包含针对喀尔巴阡山脉波兰境内段内、配套多布奇茨（Dobczyce）拦河水库的拉巴河上游流域所开展的建模研究结果的可视化成果。本研究聚焦于追踪三类沉积物组分（矿物类：粉砂（SILT）、黏土（CLAY）；以及矿物有机类：SMAG）从其源区直至水库内沉积区域的运移过程。为此，本研究采用了SWAT与AdH/PTM模型，并将二者集成于Macromodel DNS数字平台之上。该集成方案保障了流域、河道与水库间沉积物输运的自然连续性，可精准定位各类沉积物组分的颗粒沉积区域。本次分析以月为时间步长开展，同时纳入了输入水库的沉积物负荷的高度变异性考量。研究同时探讨了气候变化与土地利用变化对该沉积物输运过程的影响。本研究以经率定与验证的拉巴河上游流域SWAT模型作为基准情景，随后应用了气候与土地利用组合情景（VS1-VS4）。气候变化预测数据源自Euro-CORDEX计划的RCM模型[https://www.euro-cordex.net/]以及全球气候模型（GCM），涵盖了短期（2026-2035年）与长期（2046-2055年）时间尺度下的RCP4.5与RCP8.5两种排放情景。上述气候情景最初为波兰城市发展规划（UAP）[http://klimada.mos.gov.pl/en/]所编制。土地利用情景（涵盖森林与城市用地类型）基于FORECOM项目的研究成果[http://www.gis.geo.uj.edu.pl/FORECOM/index.html]。为追踪水库内各类沉积物组分的运移路径，本研究将水库划分为A至D共四个区域。本数据集共包含15张Excel工作表：
- 研究区域：待分析流域与水库的区位信息；
- 情景：已构建情景的清单及其详细说明；
- NOV-OCT：基准情景与各变异情景下多布奇茨水库矿物类沉积物颗粒（SILT粉砂、CLAY黏土）的分布图谱；
- SMAG：基准情景与各变异情景下多布奇茨水库有机矿物类沉积物颗粒（SMAG）的分布图谱。