celestinhavy/BurundiTanganyikaBasin

Supporting materials for LULC change analysis, PLUS model projection, and conservation prioritization in the Lake Tanganyika Basin, Burundi. **Spatial Prioritization for Sustainable Freshwater Basin Management – Reproducibility Workflow** This repository provides a fully reproducible workflow for LULC change analysis, chord diagram visualisation, spatial prioritisation (Protection Core, Restoration Hotspot, Sustainable Use zones for 2030 and 2040), and One‑At‑a‑Time (OAT) sensitivity analysis of key model parameters. All geospatial data are clipped to the study area, harmonised to a common grid, and provided in consistent coordinate systems. **Repository structure.** Input data are organised into two main folders. `PLUS_Projection_and_Prioritization_Input_Data` contains base rasters for the PLUS model (constraint layers, driving factors, historical LULC maps for 2000–2020, projected LULC maps for 2030–2040) plus fixed baseline layers: `DEM.tif`, `Slope.tif`, and binary buffers for hydrological (380 m), cultural (1000 m), and protected areas (1000 m). `Sensitivity_Analysis_Input_Data` provides multiplied buffer rasters (`_07x` to `_13x`, representing 0.7× to 1.3× multipliers) for sensitivity testing. The elevation threshold is derived dynamically via segmented regression on the DEM. To accommodate file‑size limits and simplify storage management, all input rasters are distributed as a multi‑part split ZIP archive using the .z01, .z02, … .zip convention (created by WinRAR or 7‑Zip). You must download ALL parts (every .z01, .z02, … and the .zip file) and place them in the same empty folder. Missing even a single part will cause extraction to fail with a “missing volume” error. Do not try to extract .z01 or .z02 individually – they are not standalone archives. Always use the main .zip file **Workflow.** Run `LULC_Change_Analysis.R` for each period to compute transition matrices, gains, losses, persistence, and annual change rates (exported as CSVs). Execute `ChordDiagram_YYYY_YYYY.R` to visualise LULC flows. Run `Prioritization_2030.R` and `Prioritization_2040.R` (after setting input/output paths) to gene …