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This paper explores the green supply chain management (GSCM) of companies based in the Yangtze River Delta, China. The companies' overall GSCM practice level (L GSCM ) is measured by using the data from 165 valid respondents in a questionnaire survey conducted during April and May 2009. The relationships between L GSCM and the classified determinant factors are analyzed. It is indicated that Chinese companies are still at a preliminary stage of GSCM practices. Their environmental management in cooperation with external members of the supply chain is very marginal. A company's L GSCM is significantly and positively associated with the external pressures from regulatory, domestic clients and business competitors. As an internal factor, a company's learning capacity greatly determines L GSCM . We also confirm that the internal factors function as intermediate variables of external pressures in influencing a company's GSCM. A company's environmental management capacities will be strongly enhanced by frequent internal training of employees to increase its involvement in GSCM practices.

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China has been experiencing rapid urbanization since the reform and open policy launched in 1978, leading to the growth of urban water demands and aggravating water scarcity especially in the new millennium. Accordingly, water resources previously used for agriculture and environmental systems tend to be transferred to urban systems. Limited by the total quantity and frail environments, the patterns of water resources flows among different sectors and regions change obviously. Water related problems induced by rapid urbanization have become one of the key concerns for scientists and governments. The purpose of this paper is to analyze the new features of water resources flows related to urbanization in China, mainly with regard to bidirectional water resources flows between rural and urban areas, environmental and socio-economic systems, real and virtual water flows between the south and north. This paper also considers the socio-economic and environmental challenges which are resulted from water resources flows in such a case, and provides some countermeasures on how to promote water resources to flow healthily and swimmingly, so as to improve the urban development constrained by scarce water resources.

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