Abstract: It is obvious that the mangrove forest ecosystem has zonation phenomenon, and the factors influencing mangrove zonation including inherent and environmental factors. Inherent factors include the difference in reproduction types, dispersal capacity of propagule (size, shape, buoyancy, etc.) and anchoring ability (such as rooting time), propagule energy accumulation (increasing energy per unit mass from flower to mature propagule), anatomical and physiological characteristics of seedlings. Environmental factors include soil physiochemical conditions (salinity, redox, pH and sulfur content) and bio-factors (animal predation, interspecific competition). Each factor described above may be the main factor influencing mangrove zonation in a special region.

Key words: Silicate-dissolving bacteria, lux marker genes, Triparental cross