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Abstract:Water is an essential foundation for socio-economic development and environmental protection. As such, it is very critical for a city's sustainable development. This study analyzed the changes in water utilization structure and its impact factors using water consumption data for agricultural, industrial, domestic and ecological areas in the city of Tianjin, China from 2004 to 2013. On this base, the evolution law and impact factors of water utilization structure were depicted by information entropy and grey correlation respectively. These analyses lead to three main results. First, the total amount of water consumption in Tianjin increased slightly from 2004 to 2013. Second, the information entropy and equilibrium degree peaked in 2010. From 2004 to 2010, the water utilization structure tended to be more disordered and balanced. Third, the economic and social factors seemed to influence the water utilization structure, while the main impact factors were industrial structure, per capita green area, cultivated area, effective irrigation area, rural electricity consumption, animal husbandry output, resident population, per capita domestic water etc.

Aims:The establishment of an evaluation indicator system of recreational sustainability management is extremely important for the Qinghai-Tibet Plateau national park cluster to guide scientific planning and construction, promote recreational sustainability management, regulate the behaviors of market subjects and visitors, and protect the important and fragile ecological environment. Methods: Based on scientific investigation of the potential construction area of national park cluster, taking demands as orientation, the demand of national park cluster for recreational sustainability management evaluation indicator is •研究报告• © 张丛林等: 青藏高原国家公园群游憩可持续性管理评估指标体系 781 https://www.biodiversity-science.net研究报告analyzed. Guided by global consensus, the applicability of Global Sustainability Tourism Criteria for Destinations in national park cluster is discussed. Guided by experience, the management emphases of recreational sustainability of national parks in major countries is summarized. Results: The recreational sustainability management evaluation indicator system for the Qinghai-Tibet Plateau national park cluster has been established, including five first-level indicators of system construction, economy, society, culture and ecological environment, 15 second-level indicators and 34 third-level indicators. Conclusion & suggestions:The recreational sustainability management evaluation indicator system for the Qinghai-Tibet Plateau national park cluster has regional, representative, systematic and pragmatic characteristics. The application of the Recreational Sustainability Management Evaluation Indicator System for the Qinghai-Tibet Plateau national park cluster needs to be supported by monitoring and statistical systems. However, the foundation of these two fields in the Qinghai-Tibet Plateau national park cluster is relatively weak. In order to apply the evaluation indicator system of recreational sustainability management, it is suggested to improve related monitoring and statistics systems. On the one hand, priority should be given to monitoring number of visitors, rare and endemic species, water environment quality, vegetation coverage, authenticity, and integrity of cultural heritage in the national park cluster potential construction area. On the other hand, it is necessary to give priority to strengthen the statistical work on the visitor attributes, visitors' satisfaction, local community satisfaction, the contribution of recreation to local economic and social development, and the waste disposal rate of recreation.

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