9-second gridded continental Australia refugial potential for Mammals 1990:2050 CanESM2 RCP 8.5 (CMIP5) (GDM: MAM_r2)

Refugial potential index for Mammals 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

基于群落更替广义相异模型（Generalised Dissimilarity Modelling, GDM）构建的气候变化背景下哺乳动物气候避难所潜力指数。
该指标为相对测度，表征每个栅格单元作为局域（100公里半径范围）气候避难所的潜力，其考量了栅格单元当前生态环境在未来的留存状态，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体系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（IUCN）世界公园大会上展示。其详细说明见于《AdaptNRM指南：助力生物多样性适应——基于群落级建模方法支撑气候适应规划》，可通过在线网址www.adaptnrm.org获取。

本数据集提供两种数据格式：
1. 压缩ESRI浮点栅格数据：包含二进制浮点栅格文件（*.flt）、配套的ESRI头文件（*.hdr）及投影文件（*.prj）。从压缩包解压后，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，将其作为其他二进制格式数据使用。
2. ArcGIS图层包（*.lpk）：此类数据包可通过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学摘要，以供进一步查阅相关信息。

本9秒分辨率系列数据集的图层采用统一命名格式：
生物类群_基准年份_情景_分析类型
示例：A_90_CAN85_S 或 R_90_MIR85_L
其中生物类群代号对应关系为：A=两栖动物，M=哺乳动物，R=爬行动物，V=维管植物。