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Spatial soil information in South Africa: Situational analysis, limitations and challenges

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      Abstract

      Soil information is vital for a range of purposes; however, soils vary greatly over short distances, making accurate soil data difficult to obtain. Soil surveys were first carried out in the 1920s, and the first national soil map was produced in 1940. Several regional studies were done in the 1960s, with the national Land Type Survey completed in 2002. Subsequently, the transfer of soil data to digital format has allowed a wide range of interpretations, but many data are still not freely available as they are held by a number of different bodies. The need for soil data is rapidly expanding to a range of fields, including health, food security, hydrological modelling and climate change. Fortunately, advances have been made in fields such as digital soil mapping, which enables the soil surveyors to address the need. The South African Soil Science fraternity will have to adapt to the changing environment in order to comply with the growing demands for data. At a recent Soil Information Workshop, soil scientists from government, academia and industry met to concentrate efforts in meeting the current and future soil data needs. The priorities identified included: interdisciplinary collaboration; expansion of the current national soil database with advanced data acquisition, manipulation, interpretation and countrywide dissemination facilities; and policy and human capital development in newly emerging soil science and environmental fields. It is hoped that soil information can play a critical role in the establishment of a national Natural Agricultural Information System.

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      On digital soil mapping

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        Visible, near infrared, mid infrared or combined diffuse reflectance spectroscopy for simultaneous assessment of various soil properties

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          Development of Reflectance Spectral Libraries for Characterization of Soil Properties

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            Author and article information

            Affiliations
            [1 ] Institute for Soil, Climate and Water South Africa
            [2 ] University of the Free State South Africa
            [3 ] Stellenbosch University South Africa
            [4 ] University of Fort Hare South Africa
            Contributors
            Role: ND
            Role: ND
            Role: ND
            Role: ND
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            Role: ND
            Journal
            sajs
            South African Journal of Science
            S. Afr. j. sci.
            Academy of Science of South Africa (Pretoria )
            1996-7489
            June 2015
            : 111
            : 5-6
            : 1-7
            S0038-23532015000300011
            10.17159/sajs.2015/20140178

            http://creativecommons.org/licenses/by/4.0/

            Product
            Product Information: SciELO South Africa
            Categories
            Biology
            Humanities, Multidisciplinary

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