Effects ofMetabolism Regula tor on Surv iva l Ra te of Softwood Cutting Prop2aga tion and ItsMechan ism Review on the main microorganisms and their metabolic mechanisms in enhanced biological phosphorus removal (EBPR)systems. Effects ofMetabolism Regula tor on Surv iva l Ra te of Softwood Cutting Prop2aga tion and ItsMechan ism