Soil Grids of Victorian - Soil Sand %

A set of Digital Soil Maps (mean, 5th and 95th percentile prediction values) of soil sand % across Victoria in geotiff format. Sand is considered to be the 20 um to 2mm mass fraction of the < 2mm soil material.\n\nGrids of key soil properties have been produced for Victoria. These grids, in raster format, provide prediction and confidence interval values for key soil properties at a 90 m grid resolution for six set depths; 0 to 5 cm, 5 to 15 cm, 15 to 30 cm, 30 to 60 cm, 60 to 100 cm and 100 to 200 cm, across Victoria.\n\nThe grids have been designed to meet the specifications created by GlobalSoilMap (www.globalsoilmap.net) to develop and deliver detailed soil information in a consistent form.\n\nThe grids are a spatial interpolation of key soil properties to support modelling and decision making in resource management, agricultural production, land use policy and planning, and in further research such as ecosystem modelling.\n\nThe methodology used to develop the Soil Grids of Victoria has been based on that refined by the Australian Soil and Landscape Grid. Data and knowledge embedded into existing soil related datasets, e.g. soil profile and land mapping collections, have been key inputs. \n\nWhilst the new maps show an immense amount of fine scale detail, and are our best spatially continuous and exhaustive estimates of soil attributes across all of Victoria, they are most appropriately used for assessments of regional to state-wide trends of soil properties and their relationship with their environment and pedogenesis. Care should be taken when using the grids for local assessments and it is recommended that the confidence intervals are included at this scale.

一套维多利亚州土壤砂粒百分比的数字土壤图（包含均值、第5百分位和第95百分位预测值），格式为GeoTIFF。砂粒定义为粒径小于2毫米的土壤物质中，粒径在20微米至2毫米之间的质量分数。

本数据集为维多利亚州生成了关键土壤属性的栅格数据。这些栅格以 raster 格式呈现，在全州范围内针对六个固定深度（0-5厘米、5-15厘米、15-30厘米、30-60厘米、60-100厘米及100-200厘米），以90米的栅格分辨率提供关键土壤属性的预测值及置信区间值。

这些栅格数据的设计符合GlobalSoilMap（www.globalsoilmap.net）制定的规范，旨在以统一格式开发和提供详细的土壤信息。

该栅格数据是关键土壤属性的空间插值结果，用于支持资源管理、农业生产、土地利用政策与规划领域的建模和决策，以及生态系统建模等后续研究。

维多利亚州土壤栅格数据的开发方法基于澳大利亚土壤与景观栅格（Australian Soil and Landscape Grid）优化后的方法。现有土壤相关数据集（如土壤剖面和土地制图集合）中蕴含的数据和知识是核心输入。

尽管新地图呈现了大量精细尺度的细节，且是我们对维多利亚州全域土壤属性最优质的空间连续和全面估算，但它们最适用于评估区域至州级尺度的土壤属性趋势及其与环境和土壤发生学（pedogenesis）的关系。在将栅格数据用于局部评估时需谨慎，并建议在此尺度下纳入置信区间。