Stein Index Classification for Streams National 20150513

## **Abstract** \n\nThe dataset was derived by the Bioregional Assessment Programme. The parent dataset(s) is identified in the Lineage field in this metadata statement. The processes undertaken to produce this derived dataset are described in the History field in this metadata statement. \n\n\n\nA raster of landform built using the Stein Index as described in the 'INTERIM CLASSIFICATION OF AQUATIC SYSTEMS IN THE MURRAY-DARLING BASIN' page 23-24.\n\nThis is used to classify streams according to whether it is upland or lowland relative to the surrounding terrain and high energy or low energy depending on landscape features.\n\n## **Purpose** \n\nTo provide a simple classification of streams for regions where there was limited information\n\n## **Dataset History** \n\nThe final definitions for landform, in terms of the Stein index are:\n\n \n\nLowland: mrVBF > 3;\n\nLow Energy Upland: mrVBF 2.5;\n\nHigh Energy Upland: mrVBF < 2.5 AND mrRTF =2.5 AND mrVBF4, transitional 3.5 to 4). A visual inspection of other areas in New South Wales did not support changing thresholds at this time, but a more rigorous calibration and validation process has not yet been carried out. The New South Wales River Styles data set based on site observations is likely to be a valuable contributor to this process.\n\n \n\nGIS application\n\nThe landform attribute was developed using the 3 sec mrVBF and mrRTF from CSIRO (Table 10)\n\n \n\nLowland: MrVBF_int > 3; \n\nLow Energy Upland: MrVBF_int 2;Lowland\n\nHigh Energy Upland: MrVBF_int

## **摘要**

本数据集由生物区域评估计划（Bioregional Assessment Programme）衍生生成。其源数据集已在本元数据声明的谱系（Lineage）字段中标注，该衍生数据集的生成流程则已在本元数据声明的历史（History）字段中予以说明。

本数据集为基于斯坦因指数（Stein Index）构建的地貌栅格数据，构建方法详见《墨累-达令流域水生系统临时分类（INTERIM CLASSIFICATION OF AQUATIC SYSTEMS IN THE MURRAY-DARLING BASIN）》第23-24页。

该栅格数据用于对河道进行分类：依据其与周边地形的相对关系划分为高地河道与低地河道，并根据景观特征划分为高能量河道与低能量河道。

## **目的**

为信息匮乏区域的河道提供简易分类方案

## **数据集历史**

基于斯坦因指数的地貌最终分类定义如下：

低地：mrVBF > 3；

低能量高地：mrVBF = 2.5；

高能量高地：mrVBF < 2.5 且 mrRTF = 2.5，另含mrVBF4阈值区间（过渡区间为3.5至4）。

目前对新南威尔士州其他区域的目视检查结果暂不支持调整阈值，但尚未开展更严谨的校准与验证工作。基于实地观测的新南威尔士州河流形态数据集有望为该工作提供重要支撑。

GIS应用

本地貌属性基于澳大利亚联邦科学与工业研究组织（CSIRO）提供的3秒分辨率mrVBF与mrRTF数据构建（详见表10）

低地：MrVBF_int > 3；

低能量高地：MrVBF_int = 2；低地

高能量高地：MrVBF_int