Tree Canopy 2021 by 2020 Census Tract

This data represents detailed tree canopy cover in Fairfax County, Virginia. The data was derived from the 2021 Land Cover raster dataset which used remote sensing technologies on aerial imagery from the National Agriculture Imagery Program (NAIP), flown in 2021 and filtered by the tree attribute and converted to polygons. The land cover data was procured through a Tree Planting and Preservation Fund (TPPF) grant given by the County to Casey Trees. Casey Trees contracted with PlantIT Geo to perform the analysis. The data was then calculated to the Census Tract level to find the percent of tree canopy per land areas of each census tract minus the area that is identified as water. Contact: DPWES GIS Services ([e-mail]) or Stormwater Urban Forestry Management Division ([e-mail]) Casey Trees, 3030 12th Street NE., Washington, DC 20017, Phone: [phone], Email: [e-mail]. PlanIT Geo, Inc., PO Box 1334, Wheat Ridge, CO 80034, Phone: [phone], Email: [e-mail]. Data Accessibility: Publicly Available Update Frequency: Never Last Revision Date: 2/3/2025 Creation Date: 2/3/2025 Feature Dataset Name: NA Layer Name: DPWMGR.TREE_2021_CENSUS_TRACTS_2020本数据集涵盖弗吉尼亚州费尔法克斯县的详细树冠覆盖数据。该数据源自2021年土地覆盖栅格数据集，该数据集依托2021年拍摄的美国农业部航空影像计划（National Agriculture Imagery Program, NAIP）航空影像，采用遥感技术进行处理，经树木属性筛选后转换为多边形要素。本土地覆盖数据由费尔法克斯县通过植树与保护基金（Tree Planting and Preservation Fund, TPPF）拨款给Casey Trees的项目所获取。Casey Trees委托PlanIT Geo开展分析工作。随后将数据整合至普查区尺度，计算各普查区陆地区域（扣除已识别水体面积后的树冠覆盖率）。联系方式：可联系公共工程与环境服务局地理信息服务部门（邮箱：[e-mail]）或雨水城市林业管理部门（邮箱：[e-mail]）；Casey Trees地址：美国华盛顿特区东北第12街3030号，邮编20017，电话：202.833.4010，邮箱：[e-mail]；PlanIT Geo, Inc.地址：美国科罗拉多州惠特拉奇邮政信箱1334号，邮编80034，电话：833.873.3627，邮箱：[e-mail]。数据可及性：公开可用；更新频率：永不更新；上次修订日期：2025年2月3日；创建日期：2025年2月3日；要素数据集名称：NA；图层名称：DPWMGR.TREE_2021_CENSUS_TRACTS_2020