Ecosystems生态系统ecosystemn.生态系统ecosystem management theory生态系统管理理论Ecosystem service functions生态系统服务功能ecosystem services function生态服务功能ecosystem health assessment生态系统健康评价ecosystem hierarchical model生态递阶模型ecosystem service evaluation价值评估Ecosystem services valuation生态服务价值ecosystem developmental view生态系统发展观ecosystem and economy system生态经济系统ecosystem-based management基于生态系统的管理