Number of indicators per major ecosystem and thematic group.

Tot: total number of indicators. Spe:
indicators specific to only one major ecosystem. Key:
indicators related to a keystone species. Red:
indicators related to vulnerable, endangered, or critically
endangered species on the red list. Comm: indicators
related to an ecological community. Serv: indicators
related to the provision of ecosystem services. Ext:
indicators considered as extra-representative by the experts.

总指标数（Tot）：指标的总数量。仅针对单一主要生态系统的指标（Spe）：仅适用于单个主要生态系统的专属指标。与关键物种相关的指标（Key）：与关键物种相关联的指标。与红色名录（red list）中易危、濒危或极危物种相关的指标（Red）：对应红色名录内易危、濒危或极危物种的指标。与生态群落相关的指标（Comm）：与生态群落相关的指标。与生态系统服务供给相关的指标（Serv）：与生态系统服务提供相关的指标。经专家认定为额外代表性的指标（Ext）：被专家判定为具备额外代表性的指标。