(1) The relation between the chlorinity and porosity may be approximated by a hyperbola.

(2) Some advice regarding chlorinity expressing measure and assessment method in the chloride ion permeability test is proposed.

(3) The defects of chlorinity expressing method and chlorinity assessment method, which exists in the current test methods of chloride ion permeability in concrete, are summarized.

(4) The number of species and total individuals of zooplankton decrease with the increasing chlorinity from the upper to the lower reach.

(5) The chlorine log was originally sensitive to shales but a shale-compensated chlorinity log is now available.

(6) In terms of the variation of saltwater sources and chlorinity , the South Branch were divided into four sections to be considered for the full exploitation of freshwater resources of the estuary.