Soil Grids of Victorian - Soil pH (water)

A set of Digital Soil Maps (mean, 5th and 95th percentile prediction values) of soil pH (of a 1:5 soil water solution) across Victoria in geotiff format. \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.

本数据集包含维多利亚州全域范围内采用1:5水土比悬液测定的土壤pH值数字土壤图，包含均值、5%分位数与95%分位数预测值，格式为GeoTIFF。

研究团队已为维多利亚州生成关键土壤属性栅格数据集。该类栅格以栅格格式存储，在90米网格分辨率下，针对维多利亚州全域的6个预设土层深度（0~5 cm、5~15 cm、15~30 cm、30~60 cm、60~100 cm及100~200 cm），提供关键土壤属性的预测值与置信区间值。

该栅格数据集严格遵循GlobalSoilMap（www.globalsoilmap.net）制定的规范，旨在以统一格式研发并发布精细化土壤信息。

本栅格数据集通过对关键土壤属性进行空间插值生成，可支撑资源管理、农业生产、土地利用政策与规划等领域的建模与决策工作，同时亦可服务于生态系统建模等相关后续研究。

维多利亚州土壤栅格的研发方法基于澳大利亚土壤与景观栅格（Australian Soil and Landscape Grid）优化后的技术路径，现有土壤相关数据集（如土壤剖面与土地测绘集）中蕴含的数据与知识为核心输入项。

尽管这套新图谱展现了大量精细尺度细节，且是目前维多利亚州全域土壤属性最优的空间连续全覆盖估算结果，但其最适用于区域至全州尺度的土壤属性趋势及其与环境和土壤发生学关系的评估。在将栅格数据用于局地评估时需谨慎，建议在此尺度下纳入置信区间以提升结果可靠性。