Land cover or use 1994

Land cover and land use in the St. Johns River Water Management District, based on 1994 color-infrared aerial film photography, with some replacement photos taken in 1995. The data layer covers the entire area within the SJRWMD jurisdiction plus about two miles beyond the SJRWMD boundary. The photography for the DOQs upon which this layer is based was flown by the National Aerial Photography Program (NAPP) from Jan 1994 through Dec 1995 with the bulk of photos taken in 1994. See the item DOQ95_INFO in the attribute table of img_idx_doqs for specific photo dates.本数据集为圣约翰斯河水资源管理区（St. Johns River Water Management District，SJRWMD）的土地覆盖与土地利用数据，基于1994年彩红外航空胶片摄影成果制作，补充有部分1995年拍摄的替代影像。该数据图层覆盖SJRWMD管辖全域及边界外约2英里的区域。本图层所依托的数字正射影像图（Digital Orthophoto Quadrangles，DOQs）由国家航空摄影计划（National Aerial Photography Program，NAPP）于1994年1月至1995年12月期间航摄获取，其中绝大多数影像拍摄于1994年。具体影像拍摄日期可查阅img_idx_doqs要素属性表中的DOQ95_INFO条目。