{"title":"德兰士瓦省南部rietspruit流域城市住宅用地的变化","authors":"M. Silberbauer, J. Moolman","doi":"10.1080/10183469.1993.9631341","DOIUrl":null,"url":null,"abstract":"Summary Informal settlements have become an important and rapidly-expanding component of urban development in South Africa. In the Rietspruit catchment, south-west of Johannesburg, average growth rates in urban land cover of up to 2.7 km2 per year (1972–1991) were measured from satellite images. Aerial photographs show that in 1991 more than a third of the residential land consisted of informal housing. Elevated concentrations of dissolved nitrogen, phosphorus and faecal coliforms in the Rietspruit point to a possible eutrophication and health risk.","PeriodicalId":161337,"journal":{"name":"Southern African Journal of Aquatic Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"CHANGES IN URBAN RESIDENTIAL LAND IN THE RIETSPRUIT CATCHMENT, SOUTHERN TRANSVAAL\",\"authors\":\"M. Silberbauer, J. Moolman\",\"doi\":\"10.1080/10183469.1993.9631341\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Summary Informal settlements have become an important and rapidly-expanding component of urban development in South Africa. In the Rietspruit catchment, south-west of Johannesburg, average growth rates in urban land cover of up to 2.7 km2 per year (1972–1991) were measured from satellite images. Aerial photographs show that in 1991 more than a third of the residential land consisted of informal housing. Elevated concentrations of dissolved nitrogen, phosphorus and faecal coliforms in the Rietspruit point to a possible eutrophication and health risk.\",\"PeriodicalId\":161337,\"journal\":{\"name\":\"Southern African Journal of Aquatic Sciences\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1993-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Southern African Journal of Aquatic Sciences\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1080/10183469.1993.9631341\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Southern African Journal of Aquatic Sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/10183469.1993.9631341","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
CHANGES IN URBAN RESIDENTIAL LAND IN THE RIETSPRUIT CATCHMENT, SOUTHERN TRANSVAAL
Summary Informal settlements have become an important and rapidly-expanding component of urban development in South Africa. In the Rietspruit catchment, south-west of Johannesburg, average growth rates in urban land cover of up to 2.7 km2 per year (1972–1991) were measured from satellite images. Aerial photographs show that in 1991 more than a third of the residential land consisted of informal housing. Elevated concentrations of dissolved nitrogen, phosphorus and faecal coliforms in the Rietspruit point to a possible eutrophication and health risk.
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