Tourist cities have particular and different use compared with ordinary city. The main users spend most of their time to leisure, and to the enjoyment of the urban environment, so people must be attentive to the chang...Tourist cities have particular and different use compared with ordinary city. The main users spend most of their time to leisure, and to the enjoyment of the urban environment, so people must be attentive to the changing needs of visitors and be willing to transform their environment based on them. These changes must be environmentally sustainable and based on concepts of economic, environmental and social sustainability, people need to be prepared for the continuous recycling of the existence, and are always seeking to increase the energy efficiency. The rehabilitation in edificatory and urban terms must go hand in hand in this task if people want to achieve the objectives of environmental sustainability, combining the lives of residents with visitors, especially in poor energetic resource areas where the external dependency is very high, that is the case of the Canary Islands, where the scarcity of energy and water make necessary in a very small and densely populated area, the efficient use of resources and thus the reuse and transformation of what exists. The rehabilitation process of the poor quality buildings built in the 1970s has started, so people must not miss this new opportunity to improve environment to make it more sustainable.展开更多
This paper illustrates the spatial variations in urban resource and environmental efficiency （REE） amongst 285 cities in China using a Data Envelopment Analysis （DEA） model, and examines the factors that have had ...This paper illustrates the spatial variations in urban resource and environmental efficiency （REE） amongst 285 cities in China using a Data Envelopment Analysis （DEA） model, and examines the factors that have had the greatest effect on this spatial pattern by regression models. The results gave an average urban REE of 0.6381, and an average pure technical efifciency （PTE） and scale efifciency （SE） of 0.6964 and 0.9225, respectively. The results support the existence of a U-shaped relationship between REE and income level, which means that an increase in urban GDP does not result in an equivalent increase in environmental efficiency. Economic growth affects REE in three ways： scale effects （population scale and urbanization rate）; composition effects; and spatial effects. Improvements in urban resource use and environmental efifciency depend upon both technological innovation and effective governance. Policies designed to achieve these improvements should therefore be implemented at al levels of government and local enterprise.展开更多
文摘Tourist cities have particular and different use compared with ordinary city. The main users spend most of their time to leisure, and to the enjoyment of the urban environment, so people must be attentive to the changing needs of visitors and be willing to transform their environment based on them. These changes must be environmentally sustainable and based on concepts of economic, environmental and social sustainability, people need to be prepared for the continuous recycling of the existence, and are always seeking to increase the energy efficiency. The rehabilitation in edificatory and urban terms must go hand in hand in this task if people want to achieve the objectives of environmental sustainability, combining the lives of residents with visitors, especially in poor energetic resource areas where the external dependency is very high, that is the case of the Canary Islands, where the scarcity of energy and water make necessary in a very small and densely populated area, the efficient use of resources and thus the reuse and transformation of what exists. The rehabilitation process of the poor quality buildings built in the 1970s has started, so people must not miss this new opportunity to improve environment to make it more sustainable.
基金National Natural Science Foundation of China(No.40971075)the Presidential Foundation of University of Chinese Academy of Sciences(No.2012)
文摘This paper illustrates the spatial variations in urban resource and environmental efficiency （REE） amongst 285 cities in China using a Data Envelopment Analysis （DEA） model, and examines the factors that have had the greatest effect on this spatial pattern by regression models. The results gave an average urban REE of 0.6381, and an average pure technical efifciency （PTE） and scale efifciency （SE） of 0.6964 and 0.9225, respectively. The results support the existence of a U-shaped relationship between REE and income level, which means that an increase in urban GDP does not result in an equivalent increase in environmental efficiency. Economic growth affects REE in three ways： scale effects （population scale and urbanization rate）; composition effects; and spatial effects. Improvements in urban resource use and environmental efifciency depend upon both technological innovation and effective governance. Policies designed to achieve these improvements should therefore be implemented at al levels of government and local enterprise.
