Severely eroded purple soil was studied by three different management 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 single tree average 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/hm 2, being 3.1 and 27.5 times as high as that of extensive management and the control respectively. The gross
caloric value of different stratum in three management patterns was tree stratum>shrub stratum>herbage stratum, while for the control, the sequence was tree stratum>herbage stratum. The community energy of different management patterns was mainly accumulated in tree stratum. The standing crop energy of extensive management was 114 764.7 kJ/m 2 , being 3.1 and 27.5 times greater than that of extensive management and the control respectively. However, the biomass and the standing crop energy for intensive management 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 degraded purple soil control should be taken based on different degradation phase.