【摘要】 在水资源时空分布不均匀、社会经济发展不均衡以及全球气候变化条件下,科学合理的水网构建已成为新时期实现水资源高效利用和促进区域可持续发展的重要途径,因此在多目标下如何把握各级水系对应水网构建的“度”也就成为当前关注的核心问题.本文回顾了全球天然水系格局、识别与表征方法、形成机制、时空分布及演化特征等方面的研究进展,分析了典型水系格局所对应的流域水资源禀赋和水资源结构特征,指出了水系格局的若干生态环境效应.进一步在对世界著名大河跨流域引水工程与骨干水网构建关系典型案例分析的基础上,指出了面向生态的水系格局优化与骨干水网构建的发展趋势.更多还原

【Abstract】 Under the conditions of uneven spatiotemporal distribution of water resources, unbalanced socioeconomic development and global climate change, water network construction has become an important way to achieve efficient utilization of water resources and promote regional sustainable development in the new era, and thus the key concern has become how to define the scale of water diversion at varying levels of river networks under multiple objectives.This paper reviews the research progress of global river networks in terms of identification and characterization methods, formation mechanism, temporal and spatial distribution and evolution characteristics, analyzes the corresponding basin water endowment and water resource structure characteristics of typical river network patterns, as well as their ecological and environmental impacts.Based on the case study of the relationships between the inter-basin diversion projects and constructions of backbone water networks, the present work prospects the development trend of the ecology-oriented optimization of water system pattern and the construction of backbone water networks.更多还原