Maryland Archived Submerged Aquatic Vegetation - SAV 1984

The Chesapeake Bay SAV Coverage was mapped from 1:24,000 black and white aerial photography to access water quality in the Bay. Each area of SAV was interpreted from the rectified photography and classified into one of four density classes by the percentage of cover. The SAV beds were entered into an ArcInfo GIS coverage using quality control procedures. This is a MD iMAP hosted service. Find more information on https://imap.maryland.gov. Feature Service Link: https://mdgeodata.md.gov/archive/rest/services/Biota/MD_ArchivedSubmergedAquaticVegetation/FeatureServer/0切萨皮克湾沉水水生植被（Submerged Aquatic Vegetation, SAV）覆盖数据集采用1:24000比例尺黑白航空影像完成制图，以评估该海湾的水质情况。每一处沉水水生植被区域均通过正射校正后的航空影像解译获取，并依据植被覆盖占比划分为四个密度等级之一。沉水植被床通过质量控制流程录入至ArcInfo地理信息系统（Geographic Information System, GIS）覆盖数据集。本数据集为马里兰州（Maryland, MD）iMAP托管服务。可通过 https://imap.maryland.gov 获取更多相关信息。要素服务链接：https://mdgeodata.md.gov/archive/rest/services/Biota/MD_ArchivedSubmergedAquaticVegetation/FeatureServer/0