We can get different indicator systems according to different frameworks. At present,there are two types of frameworks used by many countries. One is FDES developed by UNSD,the other is PSR developed by OECD.

• 目前各国使用的环境指标体系框架，主要有两种：一是联合国统计署(UNSD)开发的环境统计开发框架(FDES)，二是由经济合作与发展组织(OECD)开发的压力-状态-反应框架(PSR)。