【摘要】 城市代谢是物质、能量投入并且产生经济、环境产出的过程,能够有效解析城市化—水资源系统之间复杂的耦合交互作用。基于城市代谢理论,将城市化—水资源系统代谢过程分解为同化过程和异化过程,并采用DEA模型研究了珠江三角洲近15年来城市化—水资源系统同化、异化效率,对珠江三角洲城市化—水资源系统协同演化情况进行分析,指出其发展中存在的问题及未来发展的方向。研究表明:(1)对比同化效率,近15年来珠江三角洲异化效率保持在较高水平,城市化对水资源系统的输出扰动作用明显。(2)珠江三角洲城镇化率,经济水平和消费水平在提高水资源利用效率的前提下还有很大的提高空间。在未来发展过程中,珠江三角洲的城市化发展应该从提高技术水平方面去入手,而非一味地增加资源投入。更多还原

【Abstract】 Urban metabolism is the process of inputs of material and energy as well as economic and environmental outputs,which can be used to analyze the interactive coupling relationship between urbanization-water resources systems.Based on the urban metabolism,this paper divided the metabolic processes of urbanization-water resources system into assimilation processes and dissimilation processes.A DEA model was applied to evaluate the assimilation efficiency and dissimilation efficiency of urbanizationwater resources system in the Pearl River Delta over recent 15 years.Then,the co-evolution between urbanization-water resources system and its problems and future of the development were analyzed.The results show:(1)Compared with the assimilation efficiency,the dissimilation efficiency of the Pearl River Delta with a high level in recent 15 years shows that there was an obvious output disturbance of urbanization on water resources system.(2)There is high potential for increase in urbanization rate,economic level,and consumption level on the premise of improving water efficiency.The urbanization of the Pearl River Delta should focus on enhancing the technical level rather than increasing the resource input in the future.更多还原