Journal
INTERNATIONAL JOURNAL OF GENERAL SYSTEMS
Volume 29, Issue 3, Pages 419-428Publisher
GORDON BREACH SCI PUBL LTD
DOI: 10.1080/03081070008960949
Keywords
system reconstruction analysis; hydraulic and biological factors; larvae-flood scale; four carps; Yangtze River
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The natural reproduction of grass carp, black carp, silver carp, and bighead will be affected adversely by the Three Gorges Project in the Yangtze River. One of the methods to save the fish is to regulate the water levels, keeping them suited for the species to spawn. Nine factors associated with the scale of larvae-flood of the four species are classified into five levels, and the ranges of these factors producing larvae-floods are given by using the factor-criteria system reconstruction analysis method. Moderate beginning water levels and flow, with high daily increases in the rate of water level and flow, and a long duration of water level rising are important for the production of a large larvae-flood.
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