Australian Dryland Salinity Assessment Spatial Data (1:2,500,000) – NLWRA 2001

\r\n\r\nThe maps represent a compilation of dryland salinity risk and hazard mapping\r\nfor 2000, 2020 and 2050. The map shows the broad distribution of areas\r\nconsidered as having either a high salinity risk or a high salinity hazard. In\r\nsouthern Australia where groundwater level and trend data are available,\r\nassessments that are more confident have been possible. However, in northern\r\nAustralia groundwater data for trend analysis are very sparse or non-existent.\r\nIn these regions, salinity assessments have been based on the presence of\r\ngeological, landscape, regolith, land use and climate attributes which are the\r\nprime drivers of salinity. This national map provides a basis for identifying\r\nthose regions where more detailed assessments are warranted, and where land\r\nuse changes should be targeted if the risks are to be managed.The bulk of non-\r\nagricultural areas in Western Australia, South Australia and western New South\r\nWales were considered to have a very low salinity risk and were not\r\nassessed.Please note that the Commonwealth and all suppliers of source data\r\nused to derive the maps of aAustralia, Forecast Areas Containing Land of High\r\nHazard or Risk of Dryland Salinity from 2000 to 2050a3 do not warrant the\r\naccuracy or completedness of information in this product. Any person using or\r\nrelying upon such information does so on the basis that the Commonwealth and\r\ndata suppliers shall bear no responsibility or liability whatsoever for any\r\nerrors, faults, defects or omissions in the information.\r\n\r\nSee [further metadata](http://data.daff.gov.au/anrdl/metadata_files/pa_dsa__r9nn\r\nd_00211a00.xml) for more detail.\r\n\r\n

这些地图汇编了2000年、2020年及2050年的旱地盐度风险与盐度危害制图结果。地图展示了被判定为高盐度风险或高盐度危害区域的广泛分布情况。

在澳大利亚南部地区，由于可获取地下水位及趋势数据，因此能够开展可信度更高的评估工作。然而，澳大利亚北部地区用于趋势分析的地下水数据极为稀少或完全缺失。

在此类区域，盐度评估基于对地质、地貌、风化层（regolith）、土地利用及气候属性的分析——这些均为盐度形成的主要驱动因素。该全国性地图为识别两类区域提供了基础：一是需开展更详细评估的区域，二是若要管理盐度风险则需针对性调整土地利用方式的区域。

西澳大利亚州、南澳大利亚州及新南威尔士州西部地区的大部分非农业区域被判定为盐度风险极低，因此未纳入评估范围。

请注意，联邦政府及所有为"澳大利亚2000-2050年旱地高盐度危害或风险区域预测图"提供源数据的机构，均不对本产品中信息的准确性或完整性作出保证。任何使用或依赖此类信息的人员，均需知晓联邦政府及数据供应商对信息中的任何错误、缺陷或遗漏不承担任何责任或义务。

详情请参见[更多元数据](http://data.daff.gov.au/anrdl/metadata_files/pa_dsa__r9nnd_00211a00.xml)。