Tree Canopy 2018

Tree canopy digitized from aerial images using a supervised image classification method. Aerial images were flown over Austin, TX in 2018 during the "leaf-on" agricultural growing season and are sourced from the U.S. Department of Agriculture's National Agriculture Imagery Program (NAIP). Data are updated every 4 years and each update is provided as a separate dataset. For historical data, search for tree canopy 2006, 2010, and 2014. The NAIP imagery resolution for 2018 is 60cm (~2 feet). This is 4-band imagery (Red, Green, Blue, and Infrared bands) available in both true color and color-infrared. Tree canopy data is provided in both raster and vector GIS formats housed in a Geodatabase. Download and unzip the folder to get started. Please note, errors may exist in this dataset due to the variation in species composition and land use found across the study area. This product is for informational purposes and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. It does not represent an on-the-ground survey and represents only the approximate relative location of property boundaries.

This product has been produced by the City of Austin for the sole purpose of geographic reference. No warranty is made by the City of Austin regarding specific accuracy or completeness.

此数据集由监督图像分类方法从2018年“叶茂”农业生长季节期间在德克萨斯州奥斯汀上空航拍的航空影像中数字化生成的树木冠层数据构成。数据来源于美国农业部国家农业影像计划（NAIP）。数据每四年更新一次，每次更新均作为一个独立的数据集提供。对于历史数据，请搜索2006年、2010年和2014年的树木冠层数据。2018年的NAIP影像分辨率为60厘米（约2英尺）。该影像为四波段影像（红、绿、蓝和红外波段），提供真彩色和彩色红外两种模式。树木冠层数据以栅格和矢量GIS格式提供，存储在地理数据库中。下载并解压缩文件夹以开始使用。请注意，由于研究区域物种组成和土地利用的多样性，此数据集中可能存在误差。本产品仅用于信息参考，可能不适合法律、工程或测量目的。它不代表地面调查，仅代表财产边界的近似相对位置。该产品由奥斯汀市为地理参考的唯一目的制作。奥斯汀市不对具体精度或完整性提供任何保证。