Soil Regolith Stability for North-East and South-East New South Wales

The Soil Regolith Stability classification is used in the assessment of soil water erosion and water pollution hazards. It is currently in use as part of the EPA 1998/99 Pollution Control Licences within state forests. \r\nThis map identifies soil regolith stability classes using linework and soil information from published soil landscape mapping and reconnaissance soil landscapes of Northern and Southern Comprehensive Regional Assessment (CRA) mapping projects. \r\nEach soil landscape unit on the coverage has been allocated a regolith stability classification (soil erodibility), comprising of four classes:\r\n\r\n* class R1 – High coherence soils with low sediment delivery potential\r\n* class R2 – Low coherence soils (when wet) with low sediment delivery potential\r\n* class R3 – High coherence soils with high sediment delivery potential\r\n* class R4 – Low coherence soils (when wet)\r\n\r\nA regolith stability classification consists of a dominant class and up to three sub-dominant classes (if necessary), for example, R1(R3,R4), where R1 is the dominant regolith stability class and (R3 & R4) are the sub-dominant regolith stability classes.\r\n\r\n__Online Maps:__ This dataset can be viewed using eSPADE (NSW’s soil spatial viewer), which contains a suite of soil and landscape information including soil profile data. Many of these datasets have hot-linked soil reports. An alternative viewer is the SEED Map ; an ideal way to see what other natural resources datasets (e.g. vegetation) are available for this map area.\r\n\r\n__Reference:__ Murphy, C.L., Fogarty, P.J. and Ryan P.J. 1998, Soil Regolith Stability Classification for State Forests in Eastern New South Wales, Technical Report No. 41, Department of Land and Water Conservation.

土壤风化壳（Soil Regolith）稳定性分类可用于土壤水蚀与水污染风险评估。目前该分类已被纳入美国环境保护署（EPA）1998/1999年污染控制许可体系，应用于州立森林场景。
本地图依托公开出版的土壤景观制图数据，以及北、南综合区域评估（Comprehensive Regional Assessment, CRA）项目的踏勘土壤景观资料中的线划要素与土壤信息，识别土壤风化壳稳定性等级。
覆盖区内的每个土壤景观单元均被赋予一项风化壳稳定性分类（即土壤可蚀性），共分为4个等级：

* R1级——胶结性强的土壤，泥沙输移潜能低
* R2级——湿润时胶结性弱的土壤，泥沙输移潜能低
* R3级——胶结性强的土壤，泥沙输移潜能高
* R4级——湿润时胶结性弱的土壤

风化壳稳定性分类可包含1个主等级与至多3个次等级（按需设置），例如R1(R3,R4)，其中R1为主要风化壳稳定性等级，(R3与R4)为次要风化壳稳定性等级。

在线地图：本数据集可通过eSPADE（新南威尔士州土壤空间可视化工具）查看，该工具集成了包括土壤剖面数据在内的多套土壤与景观信息，其中多数数据集还附带了超链接土壤报告。另一可选可视化工具为SEED地图，该工具可便捷查看该地图区域内可获取的其他自然资源数据集（如植被数据集）。

参考文献：Murphy, C.L.、Fogarty, P.J. 与 Ryan P.J.，1998年，《新南威尔士州东部州立森林土壤风化壳稳定性分类》，第41号技术报告，土地与水资源保护部。