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    Spatio-Temporal LULC Mapping

    LULC mapping integrates satellite remote sensing, cloud platforms like Google Earth Engine (GEE), and machine learning to monitor land cover changes over time, enabling detection of urban expansion, agricultural shifts, and ecosystem impacts at scale.

    Evidence Overview

    • Satellite remote sensing provides efficient acquisition of large-scale land use/land cover change data for accurate mapping products.
    • Advancements in remote sensing, cloud computing via GEE, and machine learning enhance analysis of urban growth and LULC dynamics across temporal scales.
    • Classification performance relies on producer's and user's accuracy metrics.
    • Human land use influences land cover, driving ecosystem distribution and services.
    • Sustainable land management practices to reduce emissions can generate competing land demands.

    Analysis

    Workflow

    INPUT(satellite data, cloud resources, temporal stack, labels) [Load Inputs]

    SET(processing_platform, GEE) [Select Platform] for large-scale multi-date data.

    SET(sensor_inputs, Landsat/Sentinel) [Choose Sensors] for repeated observations.

    • FOR(each date in stack) [Process Temporal Loop]

    SET(classifier, ML model) [Assign Classifier] for LULC and change detection.

    • IF(semantic enhancement needed) [Check Accuracy Boost]
    • IF(forecast needed) [Optional Prediction]
    • APPLY(ANN/cellular automata) [Project Trajectories].

    RETURN(maps, changes, metrics) [Deliver Results]

    Core Methods and Considerations

    Workflow: Acquire multi-temporal imagery (Landsat, Sentinel) via GEE; preprocess for clouds and consistency; classify with ML (Random Forest, SVM, CNNs); detect changes; validate accuracies; optionally forecast with ANNs.

    Enhancements: Semantic boosting refines deep learning in complex areas.

    Resolutions: Use 30m for regional, 10m for detailed studies; annual for slow changes, monthly for dynamic ones.

    Challenges: Training data quality, mixed pixels, spectral confusion; address via fusion and ground truth.

    Uncertainties

    Specific producer's/user's accuracy values unavailable; prediction models optional and trend-dependent; class separability varies by landscape; competing land demands from sustainability efforts unquantified.