9-second gridded continental Australia refugial potential for Amphibians 1990:2050 CanESM2 RCP 8.5 (CMIP5) (GDM: AMP_r2_PTS1)

Refugial potential index for Amphibians as a function of climate change based on Generalised Dissimilarity Modelling (GDM) of compositional turnover.
This metric represents a relative measure of the potential of each grid cell to act as a climate change refugia for the local (100km radius) area, taking the representation of current ecological environments by the future state of the cell, and the area of similar ecological environments in the future into account.

This metric was developed along with others for use in an assessment of the efficacy of the protected area system for biodiversity under climate change at continental and global scales, presented at the IUCN World Parks Congress 2014. It is described in the AdaptNRM Guide “Helping Biodiversity Adapt: Supporting climate adaptation planning using a community-level modelling approach”, available online at: www.adaptnrm.org.
Data are provided in two forms:
1. Zipped ESRI float grids: Binary float grids (*.flt) with associated ESRI header files (*.hdr) and projection files (*.prj). After extracting from the zip archive, these files can be imported into most GIS software packages, and can be used as other binary file formats by substituting the appropriate header file.
2. ArcGIS layer package (*.lpk): These packages contain can be unpacked by ArcGIS as a raster with associated legend.
Additionally a short methods summary is provided in the file BiodiversityModellingMethodsSummary.pdf for further information.
Layers in this 9s series use a consistent naming convention:
BIOLOGICAL GROUP _ FROM BASE_ TO SCENARIO_ ANALYSIS
e.g. A_90_CAN85_S or R_90_MIR85_L
where BIOLOGICAL GROUP is A: amphibians, M: mammals, R: reptiles and V: vascular plants

基于物种组成更替的广义相异性模型（Generalised Dissimilarity Modelling, GDM）构建的气候变化下两栖动物避难所潜力指数。
该指标为相对度量值，用以表征每个栅格单元作为半径100km局地范围气候变化避难所的潜力，其考量了该栅格未来状态对当前生态环境的表征能力，以及未来相似生态环境的分布范围。

该指标与其他指标一同开发，用于评估大陆及全球尺度下保护区系统在气候变化背景下对生物多样性的保护效能，相关成果曾在2014年世界自然保护联盟（International Union for Conservation of Nature, IUCN）世界公园大会上展示。该指标的详细说明见于《AdaptNRM指南：助力生物多样性适应——基于群落级建模方法支持气候适应规划》，可通过在线链接www.adaptnrm.org获取。

本数据集提供两种存储格式：
1. 压缩ESRI浮点栅格文件：包含二进制浮点栅格（*.flt）、配套的ESRI头文件（*.hdr）及投影文件（*.prj）。从压缩包解压后，这些文件可导入绝大多数地理信息系统（GIS）软件，也可通过替换对应头文件的方式作为其他二进制文件格式使用。
2. ArcGIS图层包（*.lpk）：此类包可由ArcGIS软件解压为带配套图例的栅格图层。

此外，文件BiodiversityModellingMethodsSummary.pdf中提供了简短的方法概述，以供获取更多相关细节。

本9s系列图层采用统一命名规则：
生物类群 _ 基准年份 _ 情景 _ 分析类型
例如：A_90_CAN85_S 或 R_90_MIR85_L
其中生物类群的对应关系为：A代表两栖动物，M代表哺乳动物，R代表爬行动物，V代表维管植物