NBA 2018 Rivers

This spatial rivers dataset is part of the South African Inventory of Inland Aquatic Ecosystems (SAIIAE) which was released with the National Biodiversity Assessment (NBA) 2018. In the NBA 2018 the National Freshwater Ecosystem Priority Area (NFEPA) rivers GIS layer was used to represent the diversity of rivers nationally. It used the 1:500 000 river network coverage available from the Department of Water and Sanitation (DWS) and can be downloaded from the following website: http://www.dwaf.gov.za/iwqs/gis_data/river/rivs500k.aspx. This GIS layer summarizes the river ecosystem types, river condition, Ecosystem Threat Status (ETS) and Ecosystem Protection Level (EPL) as well as the free-flowing (62 identified by the NFEPA project) and flagship river information.

本空间河流数据集隶属于南非内陆水生生态系统清单（South African Inventory of Inland Aquatic Ecosystems, SAIIAE），该数据集随2018年国家生物多样性评估（National Biodiversity Assessment, NBA）一同发布。在2018年国家生物多样性评估中，研究采用国家淡水生态系统优先区（National Freshwater Ecosystem Priority Area, NFEPA）河流地理信息系统（GIS）图层来表征全国范围内的河流多样性。该数据集使用了水利及卫生部门（Department of Water and Sanitation, DWS）公开的1:50万比例尺河网数据，可通过以下网址下载：http://www.dwaf.gov.za/iwqs/gis_data/river/rivs500k.aspx。该GIS图层涵盖了河流生态系统类型、河流现状、生态系统威胁状况（Ecosystem Threat Status, ETS）、生态系统保护等级（Ecosystem Protection Level, EPL），以及由NFEPA项目确定的62条自由流动河流与旗舰河流相关信息。