北京市生态涵养区生态系统服务供给与流动的能值分析

马程, 王晓玥, 张雅昕, 李双成

Emergy analysis of ecosystem services supply and flow in Beijing ecological conservation area

Cheng MA, Xiaoyue WANG, Yaxin ZHANG, Shuangcheng LI

图1 研究区地理位置

Fig. 1 The geographical location of the study area