Severely eroded purple soil was studied by three different manag ement patterns

which are extensive management

intensive management

enclosing and tending management

at Hekou town

Ninghua county

and the biomass and energy of control community were also investigated. The results showed that the sing let reeaverag e biomass of pinus massonians by intensive management was 37.65 kg

being 2.7 and 13.7 times greater than that of extensive management and the control respectively; and the total biomass of communities was 56.908 t/hm2

being 3.1 and 27.5 times as high as that of extensive management and the control respectively. The gross caloricvalue of different stratum in three management patterns was tree stratum> shrub st ratum> herbage stratum

while for the control

the sequence was tree stratum> herbage stratum.The communi ty energ y o f di fferent manag ement pat terns was mainly accumulated in t ree st ratum. The standing cro p energy of ex tensive manag ement w as 114 764.7 kJ/m2

being 3.1 and 27.5 times greater than that of extensive manag ement and the control respectively. However

the biomass and the standing crop energy for intensive manag ement were still lower than those of enclosing and tending management

which indicated that the restoration of severely eroded purple soil needed a long time

and the measures of deg raded purple soil control should be taken based on different degradation phase.