河道侵蚀对城市化流域产沙量的贡献。
Contribution of stream channel erosion to sediment yield from an urbanizing watershed.
作者信息
Trimble SW
机构信息
Department of Geography and Institute of the Environment, University of California, 405 Hilgard Avenue, Los Angeles, CA 90095-1524, USA.
出版信息
Science. 1997 Nov 21;278(5342):1442-4. doi: 10.1126/science.278.5342.1442.
Stream channel erosion has long been suspected as the major contributor to long-term sediment yield from urbanizing watersheds. For San Diego Creek in southern California, measurements from 1983 to 1993 showed that stream channel erosion furnished 10(5) megagrams per year of sediment, or about two-thirds of the total sediment yield. Thus, because channel erosion can be a major source of sediment yield from urbanizing areas, channel stabilization should be a priority in managing sediment yield.
长期以来，人们一直怀疑河道侵蚀是城市化流域长期产沙的主要原因。对于南加州的圣地亚哥河，1983年至1993年的测量结果表明，河道侵蚀每年产生10⁵ 兆克的沉积物，约占总产沙量的三分之二。因此，由于河道侵蚀可能是城市化地区产沙的主要来源，河道稳定应是管理产沙量的首要任务。
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