Abstract: Water consumption of tree species is an important parameter of afforestation designs and environment water project researches. This paper summarized the researches on the stoma and none-stoma controlling mechanisms for leaf transpiration of tree species, the mechanisms of conduits cavitation and xylem embolism, and the concept of wood tissue water capacitance. The important actions and significance in controlling sap flow process were discussed, and further researches of water consumption controlling mechanisms of forest tree species were prospected, including the mechanisms of noon-break transpiration and night-time transpiration, effects on stoma oscillation and compensation, critical revival or conditions of conduits cavity and xylem embolism, as well as controlling mechanisms of wood tissue water capacitance.

Key words: Gracilaria tenuistipitata var.liui Zhang et Xia, Nitrogen, Phosphorus, Uptake rate