ACT wetland mapping, classification and assessment: November 2016 (Third Edition)

This product is the result of wetland mapping, classification and an assessment of climate change impacts on wetlands in the ACT to determine their climate change vulnerability. It comprises two datasets: the classification (HGL_ACT_Wetland_Class_Nov_2016) and the assessment (HGL_ACT_Wetland_Assess_Nov_2016). The assessment uses the management areas developed in the ACT HGL framework project as planning units (Cowood et al. 2016 - Expansion of landscape characterisation methods within the Hydrogeological Landscape Framework: application in the Australian Capital Territory). Mapping of management areas allows for detailed hazard assessments to understand the patterns in the chosen variables, facilitating management within the HGL framework and consideration of landscape setting when identifying suitable locations to undertake management actions.\r\n\r\nThe wetland mapping is a compilation of existing spatial layers and API validation, with classification as per the Australian National Aquatic Ecosystem Framework (AETG 2012). The wetland assessment uses the current (1990-2009) and near future (2020-2039) time periods from the NARCliM Project (Olson et al. 2014 - NARCliM Climatological Atlas. NARCliM Technical Note 4), but individually assesses consensus, wet-cool extreme and dry-hot extreme scenarios. Variables used in this assessment represent indicators of current anthropogenic pressure, future hydrological change in water sources and losses and future ecological change in vascular plant and amphibian communities. Statistical methods are used to group wetlands that are projected to experience similar levels of change in the future determining their climate change vulnerability and the principle components of change driving the variability. The variables are first attributed to the management areas across the ACT and then allocated to wetlands located within each management area. Hydrological change variables were refined for individual wetlands considering the unique water balance equations.

本成果是通过对澳大利亚首都地区（ACT）湿地开展制图、分类及气候变化影响评估，以确定其气候变化脆弱性的研究产物。该成果包含两个数据集：分类数据集（HGL_ACT_Wetland_Class_Nov_2016）与评估数据集（HGL_ACT_Wetland_Assess_Nov_2016）。评估工作采用ACT水文地质景观框架（Hydrogeological Landscape Framework，简称HGL）项目中制定的管理区域作为规划单元（Cowood等，2016——《水文地质景观框架内景观特征描述方法的扩展：在澳大利亚首都地区的应用》）。管理区域制图可支持详细的灾害评估，以理解所选变量的模式，进而促进HGL框架内的管理工作，并在确定适宜开展管理行动的地点时考量景观背景。

湿地制图是现有空间图层与应用程序接口（API）验证的汇编成果，分类遵循澳大利亚国家水生生态系统框架（AETG 2012）。湿地评估采用NARCliM项目（Olson等，2014——《NARCliM气候图集：NARCliM技术说明4》）中的当前（1990-2009年）及近期未来（2020-2039年）两个时间段，但对共识情景、湿冷极端情景及干热极端情景分别进行评估。评估所用变量涵盖当前人为压力、未来水源与损耗的水文变化、未来维管植物及两栖动物群落生态变化等指标。研究通过统计方法对预计未来将经历相似变化程度的湿地进行分组，以确定其气候变化脆弱性及驱动变异性的主要变化组分。变量首先被赋予ACT全境的管理区域，随后分配至各管理区域内的湿地；针对单个湿地的水文变化变量，则结合其独特的水平衡方程予以细化。