BERI v2: Bioclimatic Ecosystem Resilience Index: 30s global time series

CSIRO Bioclimatic Ecosystem Resilience Index (BERI v2) is a global 30 arc-second product for the years 2000, 2005, 2010, 2015 and 2020. BERI measures the capacity of natural ecosystems to retain species diversity in the face of climate change, as a function of ecosystem area, connectivity and integrity. The indicator assesses the extent to which any given spatial configuration of natural habitat across a landscape will promote or hinder climate-induced shifts in biological distributions. It does this by analyzing the functional connectivity of each grid-cell of natural habitat to areas of habitat in the surrounding landscape which are projected to support a similar assemblage of species under climate change to that currently associated with the cell of interest. The indicator can then be aggregated and reported by any desired spatial unit – e.g. an ecosystem type, a country, or the entire planet. The BERI can be used to monitor and report past-to-present trends in the capacity of ecosystems to retain species diversity in the face of ongoing climate change by repeatedly recalculating the indicator using best-available mapping of ecosystem condition or integrity observed at multiple points in time, e.g. for different years. It can also serve as a leading indicator for assessing the contribution that proposed or implemented area-based actions are expected to make to enhancing the present capacity of ecosystems to retain species diversity, thereby providing a foundation for strategic prioritisation of such actions by countries. Aggregation of the raw data for reporting by a region (country, ecoregion etc.) should follow the procedure in the folder " Calculating weighted geometric means of CSIRO BILBI indicators for a region"

CSIRO生物气候生态系统韧性指数（BERI v2）是一款覆盖2000、2005、2010、2015及2020年的全球30弧秒分辨率数据集产品。该指数用于衡量自然生态系统在气候变化背景下维持物种多样性的能力，其评估依据为生态系统的面积、连通性与完整性。
该指标用于评估某一景观内任意自然生境的空间配置，会在多大程度上促进或阻碍气候变化驱动的生物分布迁移。其实现路径为：针对每个自然生境网格单元，测算其与周边景观中具备相似物种群落承载能力的生境区域的功能连通性——这些周边生境在未来气候变化情境下，将维持与当前目标网格单元一致的物种组合。
该指标可按任意预设空间单元进行聚合与汇报，例如生态系统类型、国家乃至全球尺度。
通过使用多时间点（如不同年份）观测得到的最优生态系统状态或完整性制图数据，反复重新计算该指标，BERI可用于监测并汇报气候变化背景下生态系统维持物种多样性能力的历史至当前演变趋势。
该指标还可作为先行指标，用于评估拟议或已实施的基于区域的行动，对提升当前生态系统维持物种多样性能力的预期贡献，从而为各国制定相关行动的战略优先级提供科学依据。
按区域（国家、生态区等）聚合原始数据以生成汇报结果时，需遵循文件夹“Calculating weighted geometric means of CSIRO BILBI indicators for a region”中的操作流程。

搜集汇总

背景与挑战

背景概述

BERI v2是一个全球30弧秒分辨率的生物气候生态系统韧性指数时间序列数据集，涵盖2000至2020年间的五个时间点。该数据集用于评估自然生态系统在气候变化下保留物种多样性的能力，基于生态系统面积、连接性和完整性，通过CSIRO BILBI建模基础设施整合多种环境数据源生成。它支持监测生态系统韧性趋势，并为区域保护和政策制定提供科学依据。