中国人地关系综合评价的理论模型与实证
杨宇,李小云,董雯,洪辉,何则,金凤君,刘毅

Comprehensive evaluation on China's man-land relationship: Theoretical model and empirical study
YANG Yu,LI Xiaoyun,DONG Wen,HONG Hui,HE Ze,JIN Fengjun,LIU Yi
图5 2015年中国生态环境系统的约束力度
Fig. 5 Geography of ecological constraints of China in 2015