NDVI, nocturnal road traffic noise and traffic flow over the canton of Geneva

This dataset relates the spatial distribution of several environmental variables (including NDVI and nocturnal road traffic noise) over the territory of the canton of Geneva (Switzerland) with the aim of studying the potential attenuation effect of vegetation on road traffic noise. Traffic flow measurement points are in this regard also included. The dataset contains two distinct group of files. The first one (hec_grid_ge) contains the hectometric vector grid discretization of the canton of Geneva excluding Lake Geneva. Each cell is characterized by the mean, median and standard deviation of several environmental variables (NDVI, nocturnal road traffic noise, daily road traffic noise and land surface temperature). In addition, BiLISA local Moran's I, p-value and spatial association type for the spatial correlation of median NDVI and spatial lag of median nocturnal road traffic noise are defined for each cell. The second group of files (traffic_ge) contains the traffic flow measurements points which are characterized with "hec_grid_ge" layer variables of the hectometric cell to which they belong to.本数据集围绕瑞士日内瓦州境内多项环境变量（含归一化差分植被指数（NDVI）与夜间道路交通噪声）的空间分布构建，旨在探究植被对道路交通噪声的潜在衰减效应。本数据集同时纳入了交通流量测点。 本数据集包含两类独立文件组。第一类文件组（hec_grid_ge）涵盖排除日内瓦湖区域后的日内瓦州百米矢量格网离散化数据。每个格网单元均附带多项环境变量的均值、中位数与标准差，涉及变量包括归一化差分植被指数（NDVI）、夜间道路交通噪声、日间道路交通噪声及地表温度。此外，针对每个格网单元，还定义了用于表征中位数NDVI与中位数夜间道路交通噪声空间滞后项空间相关性的双局部空间自相关（BiLISA）局部莫兰指数（local Moran's I）、p值及空间关联类型。 第二类文件组（traffic_ge）包含交通流量测点数据，各测点均附带其所属百米格网单元对应"hec_grid_ge"图层的相关变量信息。