生态系统服务供给、消耗的平衡与盈余——以密云县为例

全面评估生态系统服务供给与消耗以及定量分析二者间的关系,对区域生态系统服务管理和可持续发展决策的制定有重要意义.本研究构建了生态系统服务供给与消耗价值的评估体系,基于遥感、统计、调研等多源数据对密云县1998和2013年的生态系统服务供给及消耗进行评估,并分析了1998—2013年密云县"生态-社会-经济"系统发展的主要驱动力.结果表明:研究期内,密云县生态系统服务供给价值远大于消耗价值,这主要由其区位功能定位决定;密云县生态系统服务供给价值、消耗价值均明显增加,但消耗增长率远大于供给增长率,这主要是由社会的快速发展引起;密云县及密云水库在供给北京市饮用水、保护生态屏障甚至维护地区稳定等多方面起着重要作用,应给予其生态补偿.

Balance between ecosystem services supply,consumption and surplus: the case of Miyun County,Beijing

Comprehensive assessment of ecosystem service supply and consumption,and quantitative analysis of relationship between them are of great significance to regional ecosystem services management and sustainable development decision making.We assessed the ecosystem services supply and consumption values in 1998 and 2013 for Miyun.We developed an evaluation system,analyzed main development driving forces of "eco-social-economy" system from multi-source data sources (remote sensing,statistics,research and others).The ecosystem services supply value was found to be much greater than consumption value,being mainly determined by location and functions of Miyun.From 1998 to 2013,the values of supply and consumption increased significantly.However,consumption growth was much greater than supply,determined by the rapid development of social economy.Miyun County and the Miyun Reservoir played key roles in drinking water supply,ecosystem protection for Beijing.They deserve adequate ecological compensations.