Herb stratum 第1页

RESEARCHES ON BIOMASS AND NUTRIENTACCUMULATION OF UNDERSTOREY IN THE SECONDGENERATION OF YOUNG CHINESE FIR PLANTATION Ⅱ．ACCUMULATION AND DISTRIBUTION OF NUTRIENT ELEMENTS IN UNDERSTORY RESEARCHES ON BIOMASS AND NUTRIENT ACCUMULATION OF UNDERSTORY IN THE SECOND GENERATION OF YOUNG CHINESE FIR PLANTATION I．BIoMASS DYNAMICS OF UNDERSTORY