Effect of marine environment factors on the morphological characteristics of Betaphycus gelatinum

To investigate environmental factors on the morphological characteristics of Betaphycus gelatinum, using the system grouping analysis method and the combination with the marine environment factor, this paper makes a study of the morphological characteristics of B.gelatinum in Hainan province . The results shows that with the increase of depth of the water temperature, salinity,transparency, dissolved oxygen becomes gradually large, pH gradually decreases, the flow rate gradually decreases, N, P, COD gradually decreases. Betaphycus gelatinum grows better in the deeper regional of the intertidal zone, turns red with the increase of the water's depth,its branches and thorns gradually become more and its curly degree becomes gradually smaller. Compare all, the hydrological physical environment and water chemistry environment are better in the deeper regional of the intertidal zone. The result of the contrast morphological characteristics is the Betaphycus gelatinum in the deeper regional of the intertidal zone has the deepest color, the maximum branches , number of teeth and minimum curl.