Ecological Multi-Decadal Landsat Satellite Imagery Pixel-Level Analysis on Vancouver Dataset

This dataset captures multi-decadal patterns of vegetation dynamics, urban expansion, and ecological risk across the City of Vancouver using consistent Landsat satellite observations from 1990 to 2025. Vancouver provides a uniquely relevant case study due to its rapid population growth, strong environmental planning reputation, and location within the highly biodiverse and climate-sensitive Pacific Northwest. This Dataset is primarily analysis results of Normalized Difference Vegetation Index (NDVI) and Normalized Difference Built-up Index (NDBI) were calculated from Landsat spectral bands for each year at the pixel level. The dataset offers a comprehensive view of how ecological conditions in a model green city have evolved under sustained urban pressure by comparing urban sprawl and vegetation loss during the peak vegetation summer months.

本数据集依托1990年至2025年的连续Landsat卫星观测数据，刻画了温哥华市数十年间的植被动态、城市扩张与生态风险格局。温哥华凭借快速的人口增长、卓越的环境规划口碑，以及地处生物多样性丰富且对气候变化高度敏感的太平洋西北沿岸区域，成为极具代表性的研究案例。本数据集的核心内容为归一化植被指数（Normalized Difference Vegetation Index, NDVI）与归一化建筑指数（Normalized Difference Built-up Index, NDBI）的分析结果，上述两类指数均基于各年份Landsat光谱波段以像元级尺度计算得出。本数据集通过对比植被盛夏季的城市蔓延与植被退化情况，全面呈现了这座标杆绿色城市在持续的城市发展压力下生态环境的演变历程。