Wetland

Wetlands are lands that are seasonally or permanently flooded by shallow water, as well as lands where the water table is close to or at the surface. In either case, the presence of abundant water has caused the formation of hydric (moist) soils and has favoured the dominance of either hydrophytic (water-loving) or water tolerant plants. The term wetland is a general one and includes specific land types commonly called marshes, bogs, swamps and fens. Other terms sometimes used to describe wetlands include mires, sloughs and peatlands. Periodically soaked or wetlands being used for agricultural purposes that no longer exhibit wetland characteristics are not considered to be wetlands for the purposes of this definition. Wetland polygons are mapped independently from other hydrographic data classes and may overlap water bodies or other hydrographic data. Not all wetlands have been identified and mapped. Active maintenance is ongoing province-wide. Evaluators using the Ontario Wetland Evaluation System (OWES) will find additional guidance on the Ontario Wetlands evaluation page. For user friendly viewing of the wetland data, navigate to Ontario’s Make a Natural Heritage Map web application. This map application displays wetlands that have been evaluated using the Ontario Wetland Evaluation System as provincially significant or non-provincially significant. The application also displays wetlands that have not been evaluated but have been mapped using other procedures. *Note: Due to limitations of the shapefile format, Wetland data can only be downloaded in the file geodatabase format (.gbd). On Ontario GeoHub, access the file geodatabase by clicking Download > Additional Resources > Complete File Geodatabase. Additional Documentation Wetland - User Guide (Word) Status On going: data is being continually updated Maintenance and Update Frequency As needed: data is updated as deemed necessary Contact Ontario Ministry of Natural Resources - Geospatial Ontario, [e-mail]湿地指季节性或永久性被浅水淹没的土地，以及地下水位接近或达到地表的土地。在此两种情形下，充足的水分均会形成湿生土壤（hydric soils），并适宜水生（嗜水）植物（hydrophytic plants）或耐水植物占据优势地位。湿地为通用分类术语，涵盖常见的草本沼泽（marshes）、泥炭藓沼泽（bogs）、森林沼泽（swamps）与低位沼泽（fens）等具体土地类型。其他用于指代湿地的术语还包括泥炭沼泽地（mires）、泥沼（sloughs）与泥炭地（peatlands）。周期性浸水，或已被用于农业且不再具备湿地特征的土地，不纳入本定义的湿地范畴。 湿地多边形（wetland polygons）将独立于其他水文数据类别开展制图工作，可能与水体或其他水文数据存在重叠。并非所有湿地均已完成识别与制图工作。全省范围内的主动维护工作正持续开展。 使用安大略省湿地评估系统（Ontario Wetland Evaluation System，OWES）的评估人员，可在安大略省湿地评估页面获取更多操作指南。若需便捷查看湿地数据，请访问安大略省「打造自然遗产地图」（Make a Natural Heritage Map）网页应用程序。该地图应用程序可展示通过安大略省湿地评估系统（OWES）评估为省级重要或非省级重要的湿地，同时展示尚未经过评估，但已通过其他流程完成制图的湿地。 *注意：由于形状文件（shapefile）格式存在限制，湿地数据仅可通过文件地理数据库（file geodatabase）格式（.gbd）下载。在安大略省地理枢纽（Ontario GeoHub）平台上，可通过点击「下载>附加资源>完整文件地理数据库」获取该文件地理数据库。 附加文档：湿地用户指南（Word格式） 状态：持续更新中——数据将持续更新 维护与更新频率 按需更新：将根据实际评估需求对数据进行更新 联系方式：安大略省自然资源部——安大略省地理空间部门，邮箱：[e-mail]