City-scale greenspace exposure and inequality

1. Global_1028_cities_urban_boundary.shp This data represents the continuous built-up areas for the 1028 cities selected in this study. 2. Global_1028_cities_GE_Gini.shp This data represents the greenspace exposre and inequality assessment for global 1028 cities using the fine-resolution population and greenspace mappings. Key attributes in the shapefile data: (1) GExpo100m: Greenspace exposure assessment using 100-m grid without considering nearby buffer zones; (2) GExpo500m: Greenspace exposure assessment using a 500-m buffer disance; (3) GExpo1km: Greenspace exposure assessment using a 1000-m buffer disance; (4) GExpo1500m: Greenspace exposure assessment using a 1500-m buffer disance; (5) GExpo500mG: Gini index of greenspace exposure assessment using 500-m buffer distance; (6) SouthNorth: Categories of Global South or Global North; (7) Continent: Categories of continents; (8) lat/long: Latitude/longitude of the city centriod; (9) urbanArea: urban areas in Km2. 3. Global_1028_cities_GE_Gini_four_seasons.shp This data represents the greenspace exposure and inequality assessment for global 1028 cities over four seasons (i.e., Spring, Summer, Fall, and Winter). Key attributes in the shapefile data: (1) GE_Spring: Greenspace exposure assessment in Spring using a 500-m buffer disance; (2) GE_Summer: Greenspace exposure assessment in Summer using a 500-m buffer disance; (3) GE_Fall: Greenspace exposure assessment in Fall using a 500-m buffer disance; (4) GE_Winter: Greenspace exposure assessment in Winter using a 500-m buffer disance; (5) Gini_Sprin: Greenspace exposure inequality assessment in Spring using a 500-m buffer disance; (6) Gini_Summe: Greenspace exposure inequality assessment in Summer using a 500-m buffer disance; (7) Gini_Fall: Greenspace exposure inequality assessment in Fall using a 500-m buffer disance; (8) Gini_Winte: Greenspace exposure inequality assessment in Winter using a 500-m buffer disance; (9) Gini_Dif_W: Greenspace exposure inequality difference between Summer and Winter using a 500-m buffer disance.1. Global_1028_cities_urban_boundary.shp：本数据集表征本研究选取的1028座城市的连续建成区范围。 2. Global_1028_cities_GE_Gini.shp：本数据集基于高分辨率人口与绿地映射数据，对全球1028座城市开展绿地暴露度与不平等性评估的成果。该形状文件（Shapefile）的核心属性包括： (1) GExpo100m：采用100米网格开展的绿地暴露度评估，未考虑邻近缓冲区； (2) GExpo500m：采用500米缓冲区距离的绿地暴露度评估； (3) GExpo1km：采用1000米缓冲区距离的绿地暴露度评估； (4) GExpo1500m：采用1500米缓冲区距离的绿地暴露度评估； (5) GExpo500mG：采用500米缓冲区距离的绿地暴露度基尼系数； (6) SouthNorth：全球南方/全球北方分类字段； (7) Continent：大洲分类字段； (8) lat/long：城市质心的经纬度坐标； (9) urbanArea：以平方千米为单位的城市建成区面积。 3. Global_1028_cities_GE_Gini_four_seasons.shp：本数据集针对全球1028座城市，基于500米缓冲区距离开展了春、夏、秋、冬四季的绿地暴露度与不平等性评估。该形状文件（Shapefile）的核心属性包括： (1) GE_Spring：春季采用500米缓冲区距离的绿地暴露度评估值； (2) GE_Summer：夏季采用500米缓冲区距离的绿地暴露度评估值； (3) GE_Fall：秋季采用500米缓冲区距离的绿地暴露度评估值； (4) GE_Winter：冬季采用500米缓冲区距离的绿地暴露度评估值； (5) Gini_Spring：春季采用500米缓冲区距离的绿地暴露度基尼系数； (6) Gini_Summer：夏季采用500米缓冲区距离的绿地暴露度基尼系数； (7) Gini_Fall：秋季采用500米缓冲区距离的绿地暴露度基尼系数； (8) Gini_Winter：冬季采用500米缓冲区距离的绿地暴露度基尼系数； (9) Gini_Dif_W：采用500米缓冲区距离时，夏季与冬季的绿地暴露度不平等性差值。