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| f | 1 | { | f | 1 | { |
| 2 | "agreement": "true", | 2 | "agreement": "true", | ||
| 3 | "alternative_identifier": "ISBN 978-1-4312-0964-4", | 3 | "alternative_identifier": "ISBN 978-1-4312-0964-4", | ||
| 4 | "author": null, | 4 | "author": null, | ||
| 5 | "author_email": null, | 5 | "author_email": null, | ||
| 6 | "authors": [ | 6 | "authors": [ | ||
| 7 | { | 7 | { | ||
| 8 | "author_department": "Centre for Geographical Analysis", | 8 | "author_department": "Centre for Geographical Analysis", | ||
| 9 | "author_email": "avn@sun.ac.za", | 9 | "author_email": "avn@sun.ac.za", | ||
| 10 | "author_name": "A", | 10 | "author_name": "A", | ||
| 11 | "author_organization": "Stellenbosch University", | 11 | "author_organization": "Stellenbosch University", | ||
| 12 | "author_surname": "van Niekerk", | 12 | "author_surname": "van Niekerk", | ||
| 13 | "contact_same_as_author": "true" | 13 | "contact_same_as_author": "true" | ||
| 14 | }, | 14 | }, | ||
| 15 | { | 15 | { | ||
| 16 | "author_department": "Centre for Geographical Analysis", | 16 | "author_department": "Centre for Geographical Analysis", | ||
| 17 | "author_email": "", | 17 | "author_email": "", | ||
| 18 | "author_name": "C", | 18 | "author_name": "C", | ||
| 19 | "author_organization": "Stellenbosch University", | 19 | "author_organization": "Stellenbosch University", | ||
| 20 | "author_surname": "Jarmain" | 20 | "author_surname": "Jarmain" | ||
| 21 | } | 21 | } | ||
| 22 | ], | 22 | ], | ||
| 23 | "citation_title": "VAN NIEKERK A, JARMAIN C, GOUDRIAAN R, MULLER SJ, | 23 | "citation_title": "VAN NIEKERK A, JARMAIN C, GOUDRIAAN R, MULLER SJ, | ||
| 24 | FERREIRA F, M\u00dcNCH Z, PAUW T, STEPHENSON G and GIBSON L (2018) An | 24 | FERREIRA F, M\u00dcNCH Z, PAUW T, STEPHENSON G and GIBSON L (2018) An | ||
| 25 | earth observation approach towards mapping irrigated areas and | 25 | earth observation approach towards mapping irrigated areas and | ||
| 26 | quantifying water use by irrigated crops in South Africa. WRC Report | 26 | quantifying water use by irrigated crops in South Africa. WRC Report | ||
| 27 | No. TT 745/17. Water Research Commission, Pretoria.", | 27 | No. TT 745/17. Water Research Commission, Pretoria.", | ||
| 28 | "contact_person": [ | 28 | "contact_person": [ | ||
| 29 | { | 29 | { | ||
| 30 | "contact_department": "Centre for Geographical Analysis", | 30 | "contact_department": "Centre for Geographical Analysis", | ||
| 31 | "contact_email": "avn@sun.ac.za", | 31 | "contact_email": "avn@sun.ac.za", | ||
| 32 | "contact_name": "A", | 32 | "contact_name": "A", | ||
| 33 | "contact_orgnization": "Stellenbosch University" | 33 | "contact_orgnization": "Stellenbosch University" | ||
| 34 | } | 34 | } | ||
| 35 | ], | 35 | ], | ||
| 36 | "creator_user_id": "bc28a33f-dc21-4795-a57f-da7cd1aa23ea", | 36 | "creator_user_id": "bc28a33f-dc21-4795-a57f-da7cd1aa23ea", | ||
| 37 | "data_classification": "both", | 37 | "data_classification": "both", | ||
| 38 | "data_collection_organization": "", | 38 | "data_collection_organization": "", | ||
| 39 | "data_reference_date": [ | 39 | "data_reference_date": [ | ||
| 40 | { | 40 | { | ||
| 41 | "data_reference_date_from": "2014-08-01", | 41 | "data_reference_date_from": "2014-08-01", | ||
| 42 | "data_reference_date_to": "2015-07-31" | 42 | "data_reference_date_to": "2015-07-31" | ||
| 43 | } | 43 | } | ||
| 44 | ], | 44 | ], | ||
| 45 | "data_structure_category": "structured", | 45 | "data_structure_category": "structured", | ||
| 46 | "dataset_language": "English", | 46 | "dataset_language": "English", | ||
| 47 | "dataset_license_url": | 47 | "dataset_license_url": | ||
| 48 | "https://creativecommons.org/licenses/by-sa/4.0/", | 48 | "https://creativecommons.org/licenses/by-sa/4.0/", | ||
| 49 | "did_author_or_contact_organization_collect_the_data": "true", | 49 | "did_author_or_contact_organization_collect_the_data": "true", | ||
| 50 | "email": "vanderLaanM@arc.agric.za", | 50 | "email": "vanderLaanM@arc.agric.za", | ||
| 51 | "groups": [], | 51 | "groups": [], | ||
| 52 | "id": "10a7e01b-99ab-426b-89d9-f66ba1d160a3", | 52 | "id": "10a7e01b-99ab-426b-89d9-f66ba1d160a3", | ||
| 53 | "isopen": false, | 53 | "isopen": false, | ||
| 54 | "keywords": "irrigated agriculture, earth observation, | 54 | "keywords": "irrigated agriculture, earth observation, | ||
| 55 | evapotranspiration, water use, remote sensing, GIS, water accounting, | 55 | evapotranspiration, water use, remote sensing, GIS, water accounting, | ||
| 56 | ETLook, irrigation mapping, crop water use, hydrology", | 56 | ETLook, irrigation mapping, crop water use, hydrology", | ||
| 57 | "license": "Open (Creative Commons)", | 57 | "license": "Open (Creative Commons)", | ||
| 58 | "license_id": null, | 58 | "license_id": null, | ||
| 59 | "license_title": null, | 59 | "license_title": null, | ||
| 60 | "maintainer": null, | 60 | "maintainer": null, | ||
| 61 | "maintainer_email": null, | 61 | "maintainer_email": null, | ||
| 62 | "metadata_created": "2026-02-20T11:16:09.840134", | 62 | "metadata_created": "2026-02-20T11:16:09.840134", | ||
| n | 63 | "metadata_modified": "2026-02-20T11:17:00.625047", | n | 63 | "metadata_modified": "2026-02-20T11:17:00.926745", |
| 64 | "minimum_maximum_extent": [ | 64 | "minimum_maximum_extent": [ | ||
| 65 | { | 65 | { | ||
| 66 | "maximum_vertical_extent": "3451", | 66 | "maximum_vertical_extent": "3451", | ||
| 67 | "minimum_vertical_extent": "0" | 67 | "minimum_vertical_extent": "0" | ||
| 68 | } | 68 | } | ||
| 69 | ], | 69 | ], | ||
| 70 | "name": | 70 | "name": | ||
| 71 | observation-mapping-of-irrigated-areas-and-water-use-in-south-africa", | 71 | observation-mapping-of-irrigated-areas-and-water-use-in-south-africa", | ||
| 72 | "notes": "This dataset was produced to quantify the spatial extent | 72 | "notes": "This dataset was produced to quantify the spatial extent | ||
| 73 | of irrigated agriculture and the consumptive water use of irrigated | 73 | of irrigated agriculture and the consumptive water use of irrigated | ||
| 74 | crops across South Africa for the period 1 August 2014 to 31 July | 74 | crops across South Africa for the period 1 August 2014 to 31 July | ||
| 75 | 2015. Earth observation and geographic information system techniques | 75 | 2015. Earth observation and geographic information system techniques | ||
| 76 | were applied to generate national-scale, monthly evapotranspiration | 76 | were applied to generate national-scale, monthly evapotranspiration | ||
| 77 | datasets at a spatial resolution of 250 m using the ETLook energy | 77 | datasets at a spatial resolution of 250 m using the ETLook energy | ||
| 78 | balance model. These datasets described vegetation water use, biomass | 78 | balance model. These datasets described vegetation water use, biomass | ||
| 79 | production, evaporation, transpiration and interception losses under | 79 | production, evaporation, transpiration and interception losses under | ||
| 80 | varying climatic and land-use conditions.\r\n\r\nA comprehensive | 80 | varying climatic and land-use conditions.\r\n\r\nA comprehensive | ||
| 81 | agricultural field boundary database was compiled by integrating | 81 | agricultural field boundary database was compiled by integrating | ||
| 82 | multiple national and provincial datasets. Machine learning and | 82 | multiple national and provincial datasets. Machine learning and | ||
| 83 | rule-based classification methods were applied to distinguish | 83 | rule-based classification methods were applied to distinguish | ||
| 84 | irrigated from rainfed fields using time-series evapotranspiration, | 84 | irrigated from rainfed fields using time-series evapotranspiration, | ||
| 85 | precipitation and vegetation indices derived from MODIS and Landsat 8 | 85 | precipitation and vegetation indices derived from MODIS and Landsat 8 | ||
| 86 | imagery. The resulting irrigated area map was iteratively refined | 86 | imagery. The resulting irrigated area map was iteratively refined | ||
| 87 | through expert review, stakeholder engagement and manual | 87 | through expert review, stakeholder engagement and manual | ||
| 88 | validation.\r\n\r\nThe final dataset indicated that approximately 1.33 | 88 | validation.\r\n\r\nThe final dataset indicated that approximately 1.33 | ||
| 89 | million hectares of land were actively irrigated during the study | 89 | million hectares of land were actively irrigated during the study | ||
| 90 | period, representing about 1.1% of South Africa\u2019s land surface. | 90 | period, representing about 1.1% of South Africa\u2019s land surface. | ||
| 91 | The total consumptive water use from irrigated agriculture was | 91 | The total consumptive water use from irrigated agriculture was | ||
| 92 | estimated at 10 221 million cubic metres per year. The dataset also | 92 | estimated at 10 221 million cubic metres per year. The dataset also | ||
| 93 | supported crop-specific water use analyses and was used to demonstrate | 93 | supported crop-specific water use analyses and was used to demonstrate | ||
| 94 | water accounting assessments in selected secondary | 94 | water accounting assessments in selected secondary | ||
| 95 | catchments.\r\n\r\nThe dataset provided a consistent, repeatable | 95 | catchments.\r\n\r\nThe dataset provided a consistent, repeatable | ||
| 96 | national benchmark for assessing irrigated agriculture, water | 96 | national benchmark for assessing irrigated agriculture, water | ||
| 97 | consumption and water availability. It supported improved water | 97 | consumption and water availability. It supported improved water | ||
| 98 | resource planning, irrigation efficiency assessments and | 98 | resource planning, irrigation efficiency assessments and | ||
| 99 | decision-making related to agricultural water management under | 99 | decision-making related to agricultural water management under | ||
| 100 | conditions of increasing water scarcity.", | 100 | conditions of increasing water scarcity.", | ||
| 101 | "num_resources": 1, | 101 | "num_resources": 1, | ||
| 102 | "num_tags": 0, | 102 | "num_tags": 0, | ||
| 103 | "organization": { | 103 | "organization": { | ||
| 104 | "approval_status": "approved", | 104 | "approval_status": "approved", | ||
| 105 | "created": "2026-02-19T09:34:28.202731", | 105 | "created": "2026-02-19T09:34:28.202731", | ||
| 106 | "description": "For over a century, SU has been a catalyst for | 106 | "description": "For over a century, SU has been a catalyst for | ||
| 107 | knowledge, innovation and transformation \u2013 serving as a true | 107 | knowledge, innovation and transformation \u2013 serving as a true | ||
| 108 | asset to South Africa, the continent and the world. We are committed | 108 | asset to South Africa, the continent and the world. We are committed | ||
| 109 | to excellence, inclusivity and collaboration, producing impactful | 109 | to excellence, inclusivity and collaboration, producing impactful | ||
| 110 | research and nurturing future-ready graduates equipped to thrive in | 110 | research and nurturing future-ready graduates equipped to thrive in | ||
| 111 | their careers, confront complex challenges and drive positive change | 111 | their careers, confront complex challenges and drive positive change | ||
| 112 | in society.", | 112 | in society.", | ||
| 113 | "id": "7e2f9d9b-877f-4b9a-a0b3-6d7b124bb46d", | 113 | "id": "7e2f9d9b-877f-4b9a-a0b3-6d7b124bb46d", | ||
| 114 | "image_url": "2026-02-19-093428.185696SUlogo.jpg", | 114 | "image_url": "2026-02-19-093428.185696SUlogo.jpg", | ||
| 115 | "is_organization": true, | 115 | "is_organization": true, | ||
| 116 | "name": "stellenbosch-university", | 116 | "name": "stellenbosch-university", | ||
| 117 | "state": "active", | 117 | "state": "active", | ||
| 118 | "title": "Stellenbosch University", | 118 | "title": "Stellenbosch University", | ||
| 119 | "type": "organization" | 119 | "type": "organization" | ||
| 120 | }, | 120 | }, | ||
| 121 | "owner_org": "7e2f9d9b-877f-4b9a-a0b3-6d7b124bb46d", | 121 | "owner_org": "7e2f9d9b-877f-4b9a-a0b3-6d7b124bb46d", | ||
| 122 | "private": false, | 122 | "private": false, | ||
| 123 | "publication_date": "2018-03-01", | 123 | "publication_date": "2018-03-01", | ||
| 124 | "publisher": "Water Research Commission", | 124 | "publisher": "Water Research Commission", | ||
| 125 | "relationships_as_object": [], | 125 | "relationships_as_object": [], | ||
| 126 | "relationships_as_subject": [], | 126 | "relationships_as_subject": [], | ||
| 127 | "resources": [ | 127 | "resources": [ | ||
| 128 | { | 128 | { | ||
| 129 | "cache_last_updated": null, | 129 | "cache_last_updated": null, | ||
| 130 | "cache_url": null, | 130 | "cache_url": null, | ||
| 131 | "created": "2026-02-20T11:17:00.647615", | 131 | "created": "2026-02-20T11:17:00.647615", | ||
| 132 | "dataset_description": "All the data that was collected as part | 132 | "dataset_description": "All the data that was collected as part | ||
| 133 | of this project is stored (electronic and hardcopy), and | 133 | of this project is stored (electronic and hardcopy), and | ||
| 134 | is\r\naccessible from the Centre for Geographical Analysis at | 134 | is\r\naccessible from the Centre for Geographical Analysis at | ||
| 135 | Stellenbosch University. Kindly contact Prof\r\nAdriaan van Niekerk at | 135 | Stellenbosch University. Kindly contact Prof\r\nAdriaan van Niekerk at | ||
| 136 | avn@sun.ac.za to gain access to the data. Alternatively, Mr Garth | 136 | avn@sun.ac.za to gain access to the data. Alternatively, Mr Garth | ||
| 137 | Stephenson\r\nat garth@sun.ac.za can be contacted.", | 137 | Stephenson\r\nat garth@sun.ac.za can be contacted.", | ||
| 138 | "description": null, | 138 | "description": null, | ||
| 139 | "format": "", | 139 | "format": "", | ||
| 140 | "hash": "", | 140 | "hash": "", | ||
| 141 | "id": "02708963-67cd-47c7-a6fd-5569a9a2e8e8", | 141 | "id": "02708963-67cd-47c7-a6fd-5569a9a2e8e8", | ||
| 142 | "is_data_supplementary": "False", | 142 | "is_data_supplementary": "False", | ||
| 143 | "last_modified": null, | 143 | "last_modified": null, | ||
| 144 | "metadata_modified": "2026-02-20T11:17:00.638558", | 144 | "metadata_modified": "2026-02-20T11:17:00.638558", | ||
| 145 | "mimetype": null, | 145 | "mimetype": null, | ||
| 146 | "mimetype_inner": null, | 146 | "mimetype_inner": null, | ||
| 147 | "name": "", | 147 | "name": "", | ||
| 148 | "package_id": "10a7e01b-99ab-426b-89d9-f66ba1d160a3", | 148 | "package_id": "10a7e01b-99ab-426b-89d9-f66ba1d160a3", | ||
| 149 | "position": 0, | 149 | "position": 0, | ||
| 150 | "resource_name": "Earth observation mapping of irrigated areas | 150 | "resource_name": "Earth observation mapping of irrigated areas | ||
| 151 | and water use in South Africa", | 151 | and water use in South Africa", | ||
| 152 | "resource_type": null, | 152 | "resource_type": null, | ||
| 153 | "size": null, | 153 | "size": null, | ||
| 154 | "state": "active", | 154 | "state": "active", | ||
| 155 | "url": "", | 155 | "url": "", | ||
| 156 | "url_type": null, | 156 | "url_type": null, | ||
| 157 | "zipped_file": "False" | 157 | "zipped_file": "False" | ||
| 158 | } | 158 | } | ||
| 159 | ], | 159 | ], | ||
| t | t | 160 | "spatial": "{\"type\": \"Polygon\", \"coordinates\": [[[16.4699, | ||
| 161 | -22.1265], [32.8931, -22.1265], [32.8931, -34.8212], [16.4699, | ||||
| 162 | -34.8212], [16.4699, -22.1265]]]}", | ||||
| 160 | "state": "draft", | 163 | "state": "active", | ||
| 161 | "tags": [], | 164 | "tags": [], | ||
| 162 | "title": "Earth observation mapping of irrigated areas and water use | 165 | "title": "Earth observation mapping of irrigated areas and water use | ||
| 163 | in South Africa", | 166 | in South Africa", | ||
| 164 | "type": "dataset", | 167 | "type": "dataset", | ||
| 165 | "uploader_estimation_of_extent_of_processing": "refined", | 168 | "uploader_estimation_of_extent_of_processing": "refined", | ||
| 166 | "url": null, | 169 | "url": null, | ||
| 167 | "version": null, | 170 | "version": null, | ||
| 168 | "vertical_extent_datum": "masl", | 171 | "vertical_extent_datum": "masl", | ||
| 169 | "wrc_project_number": " K5/2401", | 172 | "wrc_project_number": " K5/2401", | ||
| 170 | "wro_theme": "agriculture" | 173 | "wro_theme": "agriculture" | ||
| 171 | } | 174 | } |