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Solving the mystery of vanishing rivers in China

National Science Review 2019年第6期6卷 1239-1246页

作者： Yichu Wang Jinren Ni Yao Yue Jiaye Li Alistair G.L.Borthwick Ximing Cai An Xue Li Li Guangqian Wang The Key Laboratory of Water and Sediment Sciences Ministry of EducationCollege of Environmental Sciences and Engineering Peking University Beijing Innovation Center for Engineering Science and Advanced Technology Peking University State Key Laboratory of Plateau Ecology and Agriculture Qinghai University School of Water Resources and Hydropower Engineering Wuhan University State Key Laboratory of Hydroscience and Engineering Tsinghua University School of Engineering The University of Edinburgh Ven Te Chow Hydrosystems Lab Department of Civil and Environmental EngineeringUniversity of Illinois

A major controversy was sparked worldwide by a recent national water census claiming that the number of Chinese rivers with watersheds ≥100 km2was less than half the previous estimate of 50 000 rivers, which also stimulates debates on the potential causes and consequences. Here, we estimated the number of rivers in terms of stream-segmentation characteristics described by Horton, Strahler and Shreve stream-order rules, as well as their mixed mode for named rivers recorded in the Encyclopedia of rivers and Lakes in *** a result, the number of ‘vanishing rivers’ has been found to be highly relevant to statistical specifications in addition to the erroneous inclusion of pseudo-rivers primarily generated in arid or frost-thaw areas. The modified Horton stream-order scheme reasonably depicts the configuration of complete natural streams from headwater to destination, while the Strahler largely projects the fragmentation of the named river networks associated with human aggregation to the hierarchical river systems.

关键词： vanishing rivers river network stream segmentation stream-order rules

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