Braidwood 1:100 000 Hydrogeological Landscapes: June 2010 (First Edition)

The Hydrogeological Landscape (HGL) concept provides a structure for the understanding of how salinity manifests itself in the landscape and how differences in salinity are expressed across the landscape. A HGL spatially defines areas of similar salt stores and pathways for salt mobilisation. The process of HGL determination relies on the integration of a number of factors: geology, soils, slope, regolith depth, and climate; an understanding of the differences in salinity development; and the impacts (land salinity/salt load/water electrical conductivity) in landscapes. Information sources such as soils maps, site characterisation, salinity site mapping, hydrogeological conditions and surface and groundwater data are combined to develop standard templates for each HGL.\r\n\r\nThe focus of this package is the Braidwood 1:100 000 map sheet area. It comprises five volumes - Volume 1: project background, regional setting, methodologies, interpretations, conclusions, glossary and references; Volume 2: HGL templates, and information associated with the use of the HGL templates; Volume 3: maps and digital spatial data developed for the project, including derivative maps to assist in land management decision making; Volume 4: background information relevant to land management for salinity in the Braidwood area. This includes information on salinity management from the perspectives of land use design, scales and types of management, landscape function, management strategies, actions and outcomes, as well as land use to be avoided; and Volume 5: findings and interpretations for a soil EC case study in the Windellama area. The soil laboratory measurements, electromagnetic survey and soil characterisations undertaken for the case study serve as a cross check to the information collected as part of the wider Braidwood HGL project.\r\n\r\nSpatial resolution for this product is 1:100 000.水文地质景观（Hydrogeological Landscape, HGL）概念为理解盐度在景观中的表现形式，以及盐度差异在全域景观中的分布特征提供了系统性分析框架。HGL可通过空间划分，界定出盐储存特征与盐迁移路径均相似的区域。HGL的确定流程需综合多类核心要素：地质条件、土壤属性、坡度、风化壳厚度与气候；对盐度发育差异的认知；以及景观范围内的盐度影响（土地盐渍化/盐负荷/水电导率）。研究人员可结合土壤图、场地特征调查、盐度场地制图、水文地质条件、地表水与地下水数据等信息源，为每一类HGL制定标准化应用模板。 本数据集的研究范围为布雷德伍德（Braidwood）1:100000比例尺图幅区域。该数据集共分为五卷：第一卷涵盖项目背景、区域概况、研究方法、解读结果、结论、术语表与参考文献；第二卷为HGL模板及HGL模板使用相关配套资料；第三卷包含本项目生成的地图与数字空间数据，其中还包括辅助土地管理决策的衍生地图；第四卷为布雷德伍德区域盐渍化土地管理相关的背景资料，内容涵盖土地利用规划、管理规模与类型、景观功能、管理策略、实施措施与成效，以及需规避的土地利用方式等盐渍化管理相关信息；第五卷为温德拉马（Windellama）区域土壤电导率（Electrical Conductivity, EC）案例研究的发现与解读结果。本案例研究开展的土壤实验室检测、电磁勘测与土壤特征调查数据，可作为布雷德伍德HGL整体项目所收集信息的交叉验证依据。 本产品的空间制图比例尺为1:100000。