中国海洋生态效率时空分异及其与海洋产业结构响应关系识别 |
狄乾斌, 梁倩颖 |
Spatio-temporal Difference of Marine Eco-efficiency and Identification of Its Response Relationship with Marine Industrial Structure in China |
Qianbin Di, Qianying Liang |
图3 中国海洋生态效率重心移动距离及标准差椭圆长短轴变化 |
Fig.3 The distance of gravity centers transfer and changes of ellipse axis of marine eco-efficiency in China |