NAIP 2012 NDVI 1m California

A Normalized Difference Vegetation Index (NDVI) was applied to the source NAIP 2012 imagery. NDVI=(NearIR-Red)/(NearIR+Red). The color ramp (produced by ESRI) goes from brown (less healthy vegetation) to red to green (healthier vegetation or more "greenness"). This service is offered by the California Department of Fish and Wildlife (CDFW). For more information about CDFW map services, please visit: https://wildlife.ca.gov/Data/GIS/Map-Services本研究将归一化差异植被指数（Normalized Difference Vegetation Index, NDVI）应用于原始NAIP 2012影像。NDVI的计算公式为：NDVI=(近红外波段-红光波段)/(近红外波段+红光波段)。由ESRI制作的色彩分级条，其配色从棕色（植被健康程度较低）渐变至红色，最终过渡至绿色（植被健康程度较高或绿度更高）。该服务由加利福尼亚州鱼类与野生动物部（California Department of Fish and Wildlife, CDFW）提供。如需了解更多CDFW地图服务相关信息，请访问：https://wildlife.ca.gov/Data/GIS/Map-Services