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BRRRQAUUUUAFFFFAH//Z Land Resource Officer Department of Environment and Science Land Resource Officer soils@qld.gov.au 20231023 ArcGIS Metadata 1.0 Queensland agricultural land classes 2020-07-29 vector digital data This dataset comprises the ‘best available’ agricultural land class (ALC) data – land classes A, B, C and D. ALC mapping identifies agricultural land that can be used sustainably for a range of land uses with minimal land degradation. The classes imply a decreasing range of land use choice and an increase in the severity of limitations and/or land degradation hazard. State-wide agricultural land class (ALC) data - classes A, B, C and D. This data was released in July 2020. © State of Queensland (Department of Environment and Science and Department of Natural Resources, Mines and Energy) 2020 Land Resource Officer Department of Environment and Science Land Resource Officer soils@qld.gov.au Natural Resource Information Management Officer - soils open data Department of Resources Natural Resource Information Management Officer soils@qld.gov.au farming environment ISO 19115 Topic Categories State Planning Policy agricultural land classification; ALC; state-wide ALC; agriculture; soil farming environment State Planning Policy agricultural land classification; ALC; state-wide ALC; agriculture; soil This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit https://creativecommons.org/licenses/by/4.0/. The Queensland Government requests attribution in the following manner: © State of Queensland (Department of Environment and Science and Department of Natural Resources, Mines and Energy) 2020. Based on or contains data provided by the State of Queensland 2020. The State makes no representations or warranties in relation to the supplied data, and you agree that, to the extent permitted by law, all warranties relating to accuracy, reliability, completeness, currency or suitability for any particular purpose and all liability for any loss, damage or costs (including consequential damage) incurred in any way (including but not limited to that arising from negligence) in connection with any use of or reliance on the supplied data are excluded or limited. You agree to continually indemnify the State (including its officers and employees) against any loss, cost, expense, damage and liability of any kind (including consequential damage and liability in negligence) arising directly or indirectly from or related to any claim relating to your use of the supplied data or any product made from the supplied data. Version 6.2 (Build 9200) ; Esri ArcGIS 10.9.1.28388 true 137.994670 153.552924 -9.141286 -29.178577 The data is sourced from individual soil surveys in the Queensland Governments corporate soil information system (SALI). Priority is generally given to newer and/or more detailed mapping. It has been compiled from a wide range of land resource surveys that were conducted over many decades. The scale, reliability and confidence in those surveys and the interpretation of data into ALC varies considerably. It ranges from high intensity land suitability mapping (1:25 000) to low intensity land-systems mapping (1:500 000). On occasion 1:1 000 000 scale survey data has been used. Generally the higher the intensity, the more accurate the interpretation of the ALC. Detailed land resource surveys and more intensive land suitability assessments are considered to give greater reliability and accuracy in the creation of ALC mapping products, regardless of cartographic scale. It is important to note that the data is not intended to be used at the property scale. The majority of the 1:100 000 scale or better land resource survey projects have been re-interpreted from land suitability studies. Class A land based on land suitability data is land that is suitable for four or more current and potential crops with nil to moderate limitations to production. Class B is land that is suitable for three or fewer crops; and is suitable for sown pastures. Class C is suitable only for improved or native pastures due to limitations that preclude continuous cultivation for crop production. Class D is land that is not suitable for agricultural uses due to extreme limitations, including land alienated from agricultural uses. Mapping also includes areas of ‘Incomplete Data’ where more investment is required to adequately characterise the ALC and ‘No Data’. For much of Queensland, the ALC layer has been derived from broad scale land-systems mapping. Land-systems are recurring patterns of geology, topography, soils and vegetation. Land-systems are generally heterogeneous, particularly in relation to ALC i.e. the land-system may contain areas of land with differing ALC. The adoption of concatenated ALC codes has increased the ability to convey the nature of the variation in ALC within a land system. For example concatenated ALC have been used when the land-system could be a mix of steep hills (C3) and gently sloping arable landscapes (A2); with a resulting ALC of C3/A2. This can overestimate the area of Class A and B land if the highest rank ALC is selected for that mapping unit, even though it is the subdominant land unit. The scale of land-systems mapping of 1:250 000 is generally considered insufficient to provide an accurate or reliable ALC determination in areas under pressure from competing land uses. The state-wide ALC dataset is to be updated annually, and is date stamped. Annual changes to the data are generally associated with data improvements where new data has been collected, new projects released, errors fixed, or older data has been reviewed or updated to ensure greater consistency with the definitions of Class A and B land. The most up to date data set should be used. 132621 qld_lan_alc_current OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Feature geometry. Esri Coordinates defining the features. PROJECT_CODE Abbreviated name of the survey/project from which raw data was sourced. POLY_NO Unique identifier in original survey/project from which raw data was sourced. AG_LAND_CLASS Agricultural land classification code AG_LAND_CLASS_MEANING Agricultural land classification meaning SCALE Scale of original survey/project from which raw data was sourced. SHAPE_Length Length of feature in internal units. Esri Positive real numbers that are automatically generated. SHAPE_Area Area of feature in internal units squared. Esri Positive real numbers that are automatically generated.